This document, including the documents incorporated by reference, contains “forward-looking statements” (within the meaning of the US Private Securities Litigation Reform Act of 1995) or “forward-looking information” (within the meaning of applicable Canadian securities legislation) that relate to future events or our future financial performance. These statements can be identified by expressions of belief, expectation or intention, as well as those statements that are not historical fact. These statements often contain words such as “should,” “could,” “expect,” “may,” “anticipate,” “believe,” “intend,” “estimates,” “plans” and similar expressions. These statements are based on certain factors and assumptions as set forth in this document and the documents incorporated by reference herein, including with respect to: foreign exchange rates, expected growth, results of operations, performance, business prospects and opportunities, and effective tax rates. While we consider these factors and assumptions to be reasonable based on information currently available, they may prove to be incorrect.

Forward-looking statements are subject to risks and uncertainties that are difficult to predict. The results or events set forth in forward-looking statements may differ materially from actual results or events. Several factors could cause actual results or events to differ materially from those expressed in forward-looking statements including, but not limited to, the following:

In addition to the factors mentioned above, see “Risk Factors” under Item 1A for a description of other factors affecting forward-looking statements. As a result of these and other factors, there is no assurance that any of the events, circumstances or results anticipated by forward-looking statements included or incorporated by reference into this document will occur or, if they do, of what impact they will have on our business, our performance, the results of our operations and our financial condition.

Forward-looking statements are given only as of the date hereof and we disclaim any obligation to update or revise any forward-looking statements in this report, whether as a result of new information, future events or otherwise, except as required by law.

Item 1. Business

General

Potash Corporation of Saskatchewan Inc. is a corporation organized under the laws of Canada. As used in this document, the term “PCS” refers to Potash Corporation of Saskatchewan Inc. and, unless the context requires otherwise, the terms “we,” “us,” “our,” “PotashCorp” and the “Company” refer to PCS and its direct and indirect subsidiaries, individually or in any combination, as applicable. The company is a foreign private issuer under the rules and regulations of the US Securities and Exchange Commission (the “SEC”); however, it currently files voluntarily on the SEC’s domestic forms.

We are the world’s largest fertilizer company by capacity producing the three primary crop nutrients: potash, nitrogen and phosphate. We are the largest producer of potash worldwide by capacity. In 2014, we estimate our potash operations represented 20% of global potash capacity¹, our nitrogen operations represented 2% of global nitrogen capacity and our phosphate operations represented 3% of global phosphate capacity.

We own and operate five potash operations in Saskatchewan and one in New Brunswick.

Our nitrogen operations involve the production of nitrogen fertilizers and nitrogen feed and industrial products, including ammonia, urea, nitrogen solutions, ammonium nitrate and nitric acid. We have nitrogen facilities in Georgia, Louisiana, Ohio and Trinidad.

Our phosphate operations include the manufacture and sale of solid and liquid phosphate fertilizers, phosphate feed and industrial acid, which is used in food products and industrial processes. We have phosphate mines and mineral processing plant complexes in Florida and North Carolina. We also have four phosphate feed plants in the United States and produce phosphoric acid at our Geismar, Louisiana facility.

Our principal executive offices are located at Suite 500, 122 — 1^st Avenue South, Saskatoon, Saskatchewan, Canada S7K 7G3, and our telephone number is (306) 933-8500.

History

PCS is a corporation continued under the Canada Business Corporations Act and is the successor to a corporation without share capital established by the Province of Saskatchewan in 1975.

Between 1976 and 1989 substantial interests in the Saskatchewan potash industry were acquired. These acquisitions included the purchase of the Cory mine in 1976 and the Rocanville and Lanigan mines in 1977.

In 1989, the Province of Saskatchewan privatized PCS. While the Province initially retained an ownership interest in PCS, this interest was reduced to zero by the end of 1993. Since the privatization of PCS, we have made the following significant acquisitions:

Potash Operations

Our potash operations include the mining and processing of potash, which is predominantly used as fertilizer.

Properties

All potash produced by the Company in Saskatchewan is in the southern half of the Province, where extensive potash deposits, or “Members”, are found. The potash ore is contained in a predominantly rock salt formation known as the Prairie Evaporite, which lies about 1,000 metres below the surface. The evaporite deposits, which are bounded by limestone formations, contain potash beds of approximately 2.4 to 5.1 metres of thickness. Three potash deposits of economic importance occur in the Province: the Esterhazy, Belle Plaine and Patience Lake Members. The Patience Lake Member is mined at the Lanigan, Allan, Patience Lake and Cory mines, and the Esterhazy Member is mined at the Rocanville mine.

Near Sussex, New Brunswick, at our Penobsquis facility, we have been producing potash from the flank of an elongated salt structure. We have been incurring costs at the Penobsquis underground operation in relation to management of a brine inflow. In July 2007, we announced plans for a new potash mine and an expanded milling facility at the New Brunswick site (Picadilly). Construction of this new Picadilly mining facility was completed in 2014 and the facility is expected to begin ramping up production in 2015. Once fully ramped up, the new mine is expected to have an annual operational capability of 1.8 million tonnes. The capital budget for the project is Cdn $2.2 billion. As of December 31, 2014, we have incurred approximately Cdn $1.9 billion in expansion costs for this project. We also hold an interest in certain oil and gas rights in the vicinity of the New Brunswick mine.

We have the right to mine 774,861 acres of land in Saskatchewan. Included in these holdings are mineral rights to 668,150 acres contained in blocks around our potash mines, of which approximately 27% are owned by us, approximately 55% are under lease from the Province of Saskatchewan and approximately 18% are leased from other parties. Our remaining 106,711 acres are located elsewhere in Saskatchewan. Our leases with the Province of Saskatchewan are for 21-year terms, renewable at our option. Our significant leases with other parties are also for 21-year terms. Such other leases are renewable at our option, providing generally that production is continuing and that there is continuation of the applicable lease with the Province of Saskatchewan. In New Brunswick, we mine pursuant to a mining lease with the Province of New Brunswick. The lease is for a term

of 21 years from 1978 with renewal provisions for three additional 21 year periods. This lease was renewed effective June 13, 1999 and amended in 2005 to add additional land. We have the right to mine 58,263 acres of land in New Brunswick.

The following map shows the location of our Canadian mining operations.

Production

We produce potash using both conventional and solution mining methods. In conventional operations, shafts are sunk to the ore body and mining machines cut out the ore, which is lifted to the surface for processing. In solution mining, the potash is dissolved in warm brine and pumped to the surface for processing. Eleven grades of potash are produced to suit different preferences of the various markets.

In 2014, our conventional potash operations mined 26.2 million tonnes of ore at an average mineral grade of 23.7% potassium oxide (“K₂O”). In 2014, our potash production from all our operations consisted of 8.73 million tonnes of potash (“KCl” or “finished product”) with an average grade of 61.0% K₂O, representing 47% of North American production.

In 2014, our capacity represented an estimated 50% of the North American total capacity (based on our nameplate capacity, see table below for further information). We allocate production among our mines on the basis of various factors, including cost efficiency and the grades of product that can be produced. The Patience Lake mine, which was originally a conventional underground mine, began employing a solution mining method in 1989. The other Saskatchewan mines we own employ conventional underground mining methods.

Our operations in New Brunswick are conventional cut and fill underground mining. In addition to potash production, our New Brunswick operations also produced 0.9 million tonnes of sodium chloride (salt) in 2014.

The mining of potash is a capital-intensive business subject to the normal risks and capital expenditure requirements associated with mining operations. The processing of ore may be subject to delays and costs resulting from mechanical failures and hazards, including unusual or unexpected geological conditions, subsidence, water inflows, and other conditions involved in mining ore. For more information, see “Risk Factors — Certain complications may arise in our mining process, including water inflows in our potash mines.” on page 21 in Item 1A of Part 1 of this Annual Report on Form 10-K.

Reserves

The Company’s estimates for its conventional mining operations in Saskatchewan are based on exploration drill hole data, seismic data and actual mining results during the past 44 to 46 years. In Saskatchewan reserves are estimated by identifying material in place that is delineated on at least two sides and material in place within one mile from an existing sampled mine entry or borehole.

The Company’s estimates for its conventional mining operations in New Brunswick are based on exploration drill hole data, seismic data and actual mining results during the past 31 years. In New Brunswick, reserves are estimated by identifying material in place that is delineated by drilling or mining with results projected conservatively from these intersections.

Generally, we distinguish between proven and probable reserves in respect of our potash operations based on the level of certainty and established continuity of the mineralization in the potash deposits and reserves described. For our Saskatchewan potash operations, we distinguish proven reserves from probable reserves based on greater delineation of the reserve, which is estimated through drilling and mine entry sampling. For our New Brunswick potash operations, we distinguish proven reserves from probable reserves based on the extent of exploration coverage.

Resources

Mineral resources, which are exclusive of the mineral reserves reported above, are contained within the lands for which a mining lease is held at each mine. These resources are reported as mineralization in-place while the reserves are reported as recoverable ore.

In Saskatchewan, where geological correlations are straightforward, the mineral resource categories are generally characterized by the Company as follows:

Exploration information used to infer and compute resource tonnage estimates for Saskatchewan consists of physical sampling (boreholes) and surface seismic data (3D and 2D). In New Brunswick, where geology is complex, mineral resource categories are generally characterized by the Company as follows:

Exploration information used to infer and compute resource tonnage estimates in New Brunswick consists of physical sampling (boreholes and regional surface mapping), surface seismic data (3D and 2D), and airborne electromagnetic and regional gravity data.

The scientific and technical information included in the “Potash Operations” section of this Annual Report on Form 10-K has been prepared by or under the supervision of persons who are “qualified persons” under Canadian National Instrument 43-101 — Standards of Disclosure for Mineral Projects (“NI 43-101”). For our Saskatchewan and New Brunswick operations, Mark Fracchia (President, PCS Potash) is the qualified person who supervised the preparation of the information and who verified the data disclosed herein.

Data for the mineral reserve and mineral resource estimates for our Saskatchewan mines reported herein were verified by PotashCorp technical staff as follows:

This approach to data verification of potash mineral grade and surface seismic information is in accordance with generally accepted industry practice for areas adjacent and contiguous to an existing operating potash mine.

Nitrogen Operations

Our nitrogen operations include production of nitrogen fertilizers and nitrogen chemicals. These products are used for agricultural, industrial and animal nutrition purposes.

Properties

We have four nitrogen production facilities, of which three are located in the United States and one is located in Trinidad. The following table sets forth the facility locations and products produced.

Production

Unlike potash and phosphate, nitrogen is not mined. It is taken from the air and reacted with a hydrogen source, usually natural gas reformed with steam, to produce ammonia. The ammonia is used to produce a full line of upgraded nitrogen products, including urea, nitrogen solutions, ammonium nitrate and nitric acid. Ammonia, urea and nitrogen solutions are sold as fertilizers to agricultural customers and to industrial customers for various applications. Nitric acid and ammonium nitrate are sold to industrial customers for various applications. Urea is also sold for feed applications.

The following table sets forth the annual capacity and, for each of the last three years, the Company’s production of ammonia.

Raw Materials

Natural gas is the primary raw material used for the production of nearly all of our nitrogen products. In the United States, we may enter into natural gas hedging transactions with the goal of minimizing risk from volatile gas prices. In Trinidad, natural gas is purchased pursuant to long-term contracts using pricing formulas related to the market price of ammonia. In Trinidad, we have multiple long-term gas contracts in place. These contracts, which include minimum take or pay requirements, can provide the entire ammonia complex with 100% of its requirements in 2015, and 95% from 2016 to 2018. With the exception of the Trinidad facility, we purchase most of our natural gas from producers or marketers at the point of delivery of the natural gas into the pipeline system, then pay the pipeline company and, where applicable, the local distribution company to transport the natural gas to our nitrogen facilities. Approximately 81% of our US consumption of natural gas by our nitrogen operations is delivered pursuant to firm transportation contracts, which do not permit the pipeline or local distribution company to interrupt service to, or divert natural gas from, the plant.

Phosphate Operations

We mine phosphate ore and manufacture phosphoric acid, solid and liquid fertilizers, animal feed supplements, purified phosphoric acid which is used in food products and industrial processes, hydrofluosilicic acid (“HFSA”) and silicon tetrafluoride (“STF”).

Properties

We conduct our phosphate operations primarily at two facilities: a 75,212-acre facility near Aurora, North Carolina and a 99,588-acre facility near White Springs in northern Florida. The Aurora facility includes a 6.0 million tonne per-year mining operation, three sulfuric acid plants, four phosphoric acid plants, four purified acid plants, a liquid fertilizer plant, four superphosphoric acid (“SPA”) plants, a defluorinated phosphate (“DFP”) or animal feed plant, two granulation plants capable of producing diammonium phosphate (“DAP”) or monoammonium phosphate (“MAP”) and four STF plants.

The White Springs facility includes a mine and the Swift Creek chemical complex. We closed the facility’s Suwannee River chemical complex in the second half of 2014. The remaining Swift Creek chemical complex consists of two sulfuric acid plants, one phosphoric acid plant, and one SPA plant.

The location of our Aurora and White Springs mining operations are shown on the following map.

At our Geismar, Louisiana facility we manufacture phosphoric acid. The Geismar facility has a sulfuric acid plant, a phosphoric acid plant and a liquid fertilizer plant. A significant portion of the phosphoric acid produced at the Geismar facility is sold as feedstock to Innophos Holdings, Inc. for use in its neighboring purified acid plant. Our other phosphate properties include:

Production

We extract phosphate ore using surface mining techniques. At each mine site, the ore is mixed with recycled water to form a slurry, which is pumped from the mine site to our processing facilities. The ore is then screened to remove coarse materials, washed to remove clay and floated to remove sand to produce phosphate “rock”. The annual production capacity of our mines is currently 9.6 million tonnes of phosphate rock. During 2014, the Aurora facility’s total production of phosphate rock was 4.4 million tonnes and the White Springs facility’s total production of phosphate rock was 2.0 million tonnes. The sequence for mining portions of the Aurora property has been identified in the permit issued by the US Army Corps of Engineers in June 2009. The permit authorizes mining in excess of 30 years.

Phosphate rock is the major input in our phosphorus processing operations. Substantially all of the phosphate rock produced is used internally for the production of phosphoric acid, SPA, chemical fertilizers, purified phosphoric acid and animal feed products. Unlike the Aurora and White Springs operations, the Geismar facility does not mine phosphate rock. Presently, the Geismar facility purchases phosphate rock from the Moroccan Company OCP S.A.

In addition to phosphate ore, the other principal raw materials we require are sulfur and ammonia. The production of phosphoric acid requires substantial quantities of sulfur, which we purchase from third parties. Any significant disruption in our sulfur supply to the phosphate facilities could adversely impact our financial results. We produce sulfuric acid at the Aurora, White Springs and Geismar facilities.

Our phosphate operations purchase all of their ammonia at market rates from or through our nitrogen and sales subsidiaries. Phosphoric acid is reacted with ammonia to produce purified phosphoric acid, DAP and MAP as well as liquid fertilizers. In addition, ammonia operations include the purchase, sale and terminalling of anhydrous ammonia and much of this ammonia is purchased from third parties. Ammonia for Aurora is supplied by rail and truck from our production facilities in Lima, Ohio; Geismar, Louisiana; and Augusta, Georgia.

We produce MGA at our Aurora, White Springs and Geismar facilities. Some MGA is sold to foreign and domestic fertilizer producers and industrial customers. We further process the balance of the MGA to make solid fertilizer (DAP and MAP); liquid fertilizers; animal feed supplements for the poultry and livestock markets; and purified phosphoric acid for use in a wide variety of food, technical and industrial applications.

Reserves

Our phosphate deposits in North Carolina occur in a formation known as the Pungo River formation of the middle Miocene age. The formation, typically 75 feet to 125 feet below ground surface, is composed of interbedded phosphatic sands, silts and clays, diatomaceous clays and phosphate limestone. Phosphate of value in the ore horizon occurs as pellets of brown and black sand-sized particles, with flat-sided angular quartz grains and variable amounts of silt, clay and interbedded limestone. The phosphate ore (matrix) horizon throughout is distinguished by its relative uniformity in thickness, percent P₂O₅ and other quality characteristics.

Our White Springs operations are in Hamilton County, Florida. The Hamilton County phosphate deposits in the North Florida Phosphate District are reported to be of the middle Miocene and Pliocene ages. Because of partial reworking during the Pliocene age, these deposits tend to be more variable than middle Miocene deposits, such as those found in North Carolina.

In connection with our permit at Aurora and the reporting requirements under NI 43-101, the Company engaged Marston & Marston, Inc. (“Marston”) in late 2009 to update the estimated phosphate ore reserves at both Aurora and White Springs. Marston developed geologic and cost models, mine plans, production schedules and a cash flow estimate for each operation based on (i) a review of Company records and information regarding land areas controlled by the Company, (ii) drilling and sampling databases provided by the Company, (iii) visits to each site’s mining operations and discussions with Company personnel familiar with the geology of

the phosphate ore deposits and (iv) a phosphate market study. From these, Marston developed both reserve and resource estimates for Aurora and White Springs.

The following table sets forth the Company’s estimated proven and probable phosphate reserves for Aurora and White Springs as of December 31, 2014 at a stated average grade of 30.66% P₂O₅.

The reserves set forth above for Aurora would permit mining to continue at annual production rates for about 26 years. This mine life is based on an average annual production rate of approximately 3.85 million tonnes of 30.66% concentrate over the three-year period ended December 31, 2014. If mineral deposits covered by the permit at Aurora and now reclassified as resources are included, the mine life at Aurora would be about 44 years at such rate of production. Mineral resources that are not mineral reserves do not have demonstrated economic viability.

The reserves set forth above for White Springs would permit mining to continue at annual production rates for about 11 years, based on an average annual production rate of approximately 2.49 million tonnes of 30.66% concentrate over the three-year period ended December 31, 2014. With the closure of the Suwannee River chemical complex, we forecast a mine life of approximately 15 years based on an average forecasted annual production rate of approximately 1.86 million tonnes of 30.66% concentrate.

Resources

Mineral resources, which are exclusive of the mineral reserves reported above, are contained within the lands owned or controlled by the Company at each mine. Resources are reported as mineralization in-place with no historical recovery factors applied to quantify the total tonnes, while reserves are reported as recoverable ore, having applied the appropriate historical recovery factors.

At both Aurora and White Springs, where geological correlations are well defined, the mineral resource categories are generally characterized by the Company as follows:

Information used to infer and compute resource tonnage estimates consists of physical sampling (drill holes) and geologic modeling.

The Company’s estimated mineral resource tonnage as of December 31, 2014 for each of our mines is as follows:

The scientific and technical information included in the “Phosphate Operations” section of this annual report on Form 10-K has been prepared by “qualified persons” under NI 43-101. The qualified

persons who prepared and verified the information at each site are I.K. Gilmore CPG, PG (Senior Mining Geologist, Groundwater Management Associates, Inc.) for Aurora and Cameron Lynch, P.E. (PCS Phosphate — White Springs, Superintendent Mine Planning) at White Springs.

Data for the mineral reserve and mineral resource estimates reported for our phosphate mining operations reported herein were verified by reviewing:

Marketing

We sell to a diverse group of customers both by geography and by end product and, apart from sales of potash to Canpotex Limited (“Canpotex”), no one customer accounted for more than 10% of our total sales in 2014. Market conditions will vary on a period-over-period basis, and sales can be expected to shift from one period to another.

The following table summarizes our sales, by geographical distribution, from potash, nitrogen and phosphate products in the past three fiscal years (in millions of US dollars).

Percentages of sales referred to in this section reflect percentages of sales based on US dollars, unless otherwise indicated.

For financial information about our business segments and North American and offshore sales, see the information under “Potash — Segment Overview” and “Potash — Potash Performance” on pages 46 through 53, “Nitrogen — Segment Overview” and “Nitrogen — Nitrogen Performance” on pages 56 through 61 and “Phosphate — Segment Overview” and “Phosphate — Phosphate Performance” on pages 64 through 69 in our 2014 Annual Integrated Report, attached as Exhibit 13, and Note 3, “Segment Information” to the Company’s audited consolidated financial statements, incorporated by reference under Items 7 and 8 in this Annual Report on Form 10-K. Information with respect to the geographical locations of certain non-current assets is disclosed in Note 3, “Segment Information” to the Company’s 2014 audited consolidated financial statements, incorporated by reference under Item 8 in this Annual Report on Form 10-K.

Potash from our Saskatchewan mines for sale outside Canada and the United States is sold exclusively to Canpotex. Potash from our New Brunswick operations is marketed and sold in North America and offshore by PCS Sales (Canada), Inc. and PCS Sales (USA), Inc. (“PCS Sales”). Nitrogen and phosphate products are marketed and sold in North America and offshore by PCS Sales. See “Offshore Marketing” below.

North American Marketing

Potash

In 2014, North American sales of potash products represented 51% of our total potash sales, a significant portion of which were attributable to potash customers in the United States. Typically, our North American potash sales are greater in the first half of the year. The vast majority of sales are made on the spot market with the balance made under short-term contracts. We have no material contractual obligations in connection with North American sales to sell potash in the future at a fixed price.

Nitrogen

In 2014, North American sales of nitrogen products represented 79% of our total nitrogen sales and our total non-fertilizer products accounted for 70% of our total nitrogen sales, a significant portion of which was attributable to nitrogen customers in the United States. In 2014, our nitrogen product sales were made on the spot market and under short-term and multi-year contracts. We have no material contractual obligations in connection with North American sales to sell nitrogen in the future at a fixed price.

Ammonia we purchase is used in our operations and is sold to third party customers by PCS Sales (USA), Inc.

Phosphate

In 2014, North American sales of phosphate products represented 80% of our total phosphate sales, a significant portion of which were attributable to phosphate customers in the United States. In 2014, the majority of our phosphate product sales were made on the spot market, with the balance made under short-term contracts (generally on an annual basis) and a limited number of sales made pursuant to multi-year contracts. We have no material contractual obligations in connection with North American sales to sell phosphate products in the future at a fixed price.

The primary customers for fertilizer products are retailers, dealers, cooperatives, distributors and other fertilizer producers. Such retailers, dealers and cooperatives have both distribution and application capabilities. The primary customers for industrial products are chemical product manufacturers and the primary customers for feed products are feed manufacturers.

Offshore Marketing

Potash

Potash we produce in Saskatchewan for sale outside Canada and the United States is sold exclusively to Canpotex, which is owned in equal shares by the three potash producers in the Province of Saskatchewan (including us). Canpotex, which was incorporated in 1970 and commenced operations in 1972, acts as an export company providing integrated sales, marketing and distribution for all Canadian potash exported to customers outside the United States and Canada. Each shareholder of Canpotex has an equal voting interest as a shareholder through its nominees on the board of directors, and the shareholders of Canpotex have committed to use Canpotex as their exclusive offshore export outlet for potash produced in Canada as long as they are members of Canpotex. The members of Canpotex have exempted production from our New Brunswick mine from this requirement.

In general, Canpotex sales are allocated among the producers based on production capacity. If a shareholder cannot satisfy demand for potash by Canpotex, the remaining shareholders are entitled to satisfy the demand pro rata based on their allotted production capacity. In 2014, we supplied 52.51% of Canpotex’s requirements. Canpotex generally sells potash to private and public firms and government agencies pursuant to contracts at negotiated prices or by spot sales.

The following table sets forth the percentage of sales volumes by Canpotex for the past three calendar years in the various geographical regions.

For 2014, sales to Canpotex represented 44% of our total potash sales. Offshore sales of potash from the New Brunswick mine, through PCS Sales (Canada) Inc. and PCS Sales (USA), Inc., represented 5% of our total potash sales in 2014.

Nitrogen

Ammonia and urea predominate our offshore sales of nitrogen and originate primarily from Trinidad, with other sales coming from purchased product locations. For 2014, our offshore sales of nitrogen products represented 21% of our total nitrogen sales.

Phosphate

Until December 31, 2013, PhosChem, a phosphate export association established under US law, was the principal vehicle through which the company executed offshore marketing and sales for its solid phosphate fertilizers. PhosChem was dissolved effective December 31, 2013 and in 2014 the Company executed offshore marketing and sales for its solid phosphate fertilizer through PCS Sales (USA), Inc.

For 2014, the offshore sales of phosphate products represented 20% of our total phosphate sales.

The following table sets forth the percentage of phosphate sales volumes of PhosChem for 2013 and 2012 in the various geographical regions.

Offshore sales are subject to those risks customarily encountered in foreign operations, including (i) laws, policies and actions affecting foreign trade; (ii) other economic, political and regulatory policies of foreign governments, (iii) changes in foreign currency and exchange controls; and (iv) fluctuations in foreign currency exchange rates.

Transportation and Distribution

We have an extensive infrastructure and distribution system to store and transport our products. In addition to storage located at our production facilities, in 2014, we leased or owned 263 terminal and warehouse facilities, some of which have multi-product capability, for a total of 352 strategically located distribution points in Canada and the United States to serve our customers. To complement our distribution system in Canada and the United States, we also leased or owned approximately 9,720 railcars. In the offshore market, the Company leased one warehouse in China, one in Malaysia and had one dry bulk fertilizer port terminal in Brazil through a joint venture.

Potash

Transportation costs are a significant component of the total cost of potash. Producers have an advantage in serving markets close to their sources of supply (e.g., Saskatchewan producers in the Midwestern United States, New Brunswick producers on the US Eastern Seaboard and New Mexico producers in the Southern and Western United States). International shipping cost variances permit offshore producers (including those in the former Soviet Union, Germany and the Middle East) to compete effectively in some of our traditional markets.

Most of our potash for North American customers is shipped by rail. Shipments are also made by rail from each of our Saskatchewan mines to Thunder Bay, Ontario, for shipment by lake vessel to our warehouses and storage facilities in Canada and the United States. Potash from the New Brunswick mine is shipped primarily by ocean-going vessels from the Port of Saint John, although truck and rail transport are also used for North American customers.

In the case of our sales to Canpotex, potash is transported by rail principally to Vancouver, British Columbia, where port facilities store potash pending shipment by ocean-going vessels overseas. We have an equity interest in Canpotex Bulk Terminals Limited, which is a part owner of these port facilities. Through Canpotex, we also transport potash to, and have an interest in, a port facility located in Portland, Oregon.

Nitrogen

We distribute our nitrogen products by vessel, barge, railcar, truck and direct pipeline to our customers and, in high consumption areas, through our strategically located storage terminals. We lease or own 74 nitrogen terminal facilities. The terminals provide off-season storage and also serve local dealers during the peak seasonal demand period.

We distribute products from Trinidad primarily to markets in the United States and also to Latin America, Europe, and Africa. Our distribution operations in Trinidad employ four long-term chartered ocean-going vessels and utilize short-term and spot

charters as necessary for the transportation of ammonia. All bulk urea production from Trinidad is shipped through third-party carriers.

Phosphate

With respect to phosphates, we have long-term leases on shipping terminals in Morehead City and Beaufort, North Carolina, through which we receive and store Aurora facility raw materials and finished product. Most of our offshore phosphate sales are shipped through the terminal at Morehead City. We use barges and tugboats to transport solid products, phosphoric acid and sulfur between the Aurora facility and shipping terminals. Raw materials and products, including sulfur, are also transported to and from the Aurora facility by rail.

Sulfur is delivered to the White Springs facility by rail and truck from Canada and the United States. Most of the phosphoric acid and chemical fertilizers produced at the White Springs facility are shipped to North American destinations by rail. Ammonia for Aurora is supplied by rail and truck from our production facilities in Lima, Ohio; Geismar, Louisiana; and Augusta, Georgia. Much of the Geismar facility’s phosphoric acid is delivered via pipeline to a nearby customer. The balance of the facility’s phosphate products is shipped by rail or tank truck. Phosphate rock feedstock is delivered to Geismar from Morocco in large ocean-going vessels. Sulfur is delivered to the Geismar facility by barge, truck and rail.

Competition

Potash

Potash is a commodity, characterized by minimal product differentiation, and, consequently, producers compete based on price, quality and service. We price competitively and sell high quality products and provide high quality service to our customers. Our service includes maintaining warehouses, leasing railcars and chartering ocean-going vessels to enhance our delivery capabilities. The high cost of transporting potash affects competition in various geographic areas. The Mosaic Company, Agrium Inc. and Intrepid Potash Inc. are our main competitors in North America, along with offshore imports into the US Gulf and the East Coast, primarily from ICL, SQM and Uralkali. In offshore markets, Canpotex and PCS Sales compete with producers such as Belaruskali, ICL, K+S Group, SQM and Uralkali.

Nitrogen

Nitrogen, the most widely produced nutrient globally, is primarily a regional business. However, ammonia, the feedstock for all nitrogen products, may be manufactured in countries with adequate natural gas supplies and can enable developing nations to monetize their natural gas resources. Several countries with large reserves and low production costs use little of their gas domestically, and can produce ammonia cheaply for the export market. Natural gas typically makes up 70-85% of the cash cost of producing ammonia.

Nitrogen is an input into industrial production of a wide range of products. Manufacturers want consistent quality and just-in-time delivery to keep their plants running. Many industrial consumers are connected to their suppliers by pipeline.

Our nitrogen production serves fertilizer, industrial and feed customers. Our US plants primarily supply industrial and feed customers, and Trinidad supplies both our fertilizer and industrial customers. Our US production has benefited recently from the low cost of natural gas. In Trinidad, our natural gas contracts are primarily indexed to Tampa, Florida ammonia prices. Within North America, sales are regionalized due to transportation costs. In the US market, we compete with other domestic producers, including Agrium Inc., CF Industries Holdings, Inc., and Koch Industries, Inc., and with imported product from suppliers in the Middle East, North Africa, Trinidad, the former Soviet Union and China.

Phosphate

Markets for phosphate fertilizer products are highly competitive. Our principal advantage at Aurora and White Springs is that we operate integrated phosphate mine and phosphate processing complexes, while some of our North American competitors are required to ship phosphate rock by rail or truck greater distances from their mines to their mineral processing plants, thus incurring higher rock processing costs.

Our competitors for North American phosphate fertilizer sales are Agrium Inc., The Mosaic Company, J.R. Simplot Company and offshore imports primarily from Morocco, China and Russia.

In offshore markets, we compete primarily with OCP S.A., as well as producers from China, Russia and Saudi Arabia.

Within the animal feed supplement business in the phosphate segment, opportunities exist to differentiate products based on nutritional content, thereby making it less commodity-like. We have a significant presence in the domestic feed supplement market segments. We compete with The Mosaic Company, J.R. Simplot Company and Chinese and Russian producers for feed sales.

Industrial products are the least commodity-like of the phosphate products as product quality is a more significant consideration for customer buying decisions. We market industrial phosphate products principally in the United States and we compete with Innophos Holdings, Inc., ICL and Chinese producers for North American industrial sales.

Employees

At December 31, 2014, we employed 5,136 people, of whom 1,848 were salaried and 3,288 were hourly paid. Of these 5,136 employees, our potash operations employed 2,534 people, our nitrogen operations 802 and our phosphate operations 1,385. Our sales and transportation and distribution functions were handled by 97 employees in Northbrook, Illinois and various

other locations in the United States and by 12 employees in Saskatoon, Saskatchewan. Excluding sales personnel, the Saskatoon and Northbrook offices collectively had a corporate staff of 306.

We have entered into eight collective bargaining agreements with labor organizations representing employees. The following table sets forth the plant locations where we have entered into collective bargaining agreements and their respective expiry dates.

In 2014, we successfully negotiated a four-year collective bargaining agreement for White Springs.

Negotiations for new collective bargaining agreements for Allan, Cory, Patience Lake and Lanigan commenced in 2014 and are ongoing.

We believe we have an effective working relationship with our employees, and the unions representing them.

Royalties and Taxes

Under Saskatchewan provincial legislation, the Company is subject to resource taxes including the potash production tax and the resource surcharge. In 2014, the potash production tax totaled $181 million and the total resource surcharge was $71 million.

In addition to the potash production tax and resource surcharge, there are royalties, taxes and rental fees payable to the Provinces of Saskatchewan and New Brunswick, municipalities and others in respect of potash sales, production or property in those provinces. Such costs are included in cost of goods sold. The amount in 2014 for these royalties, taxes and fees totaled $92 million.

There are property and other taxes payable to US governments, municipalities and other entities that are included in cost of goods sold. The amount in 2014 for these property and other taxes totaled $22 million.

For 2014, miscellaneous taxes (not included above) totaled $5 million.

Income Taxes

PCS and certain subsidiaries are subject to federal and provincial income taxes in Canada. Our subsidiaries that operate in the

United States are subject to US federal and state income taxes. Our nitrogen subsidiary operating in Trinidad is subject to Trinidadian taxes.

Income taxes decreased due primarily to lower income before taxes and discrete tax adjustments partially offset by an increase in the actual effective tax rate on ordinary earnings. Effective tax rates were as follows:

Total discrete tax adjustments that impacted the rate in 2014 resulted in an income tax expense of $20 million (2013 — $55 million). Significant items to note included the following:

Environmental Matters

Our operations are subject to numerous environmental requirements under federal, provincial, state and local laws and regulations of Canada, the United States and Trinidad and Tobago. These laws and regulations govern matters such as air emissions, wastewater discharges, land use and reclamation, groundwater quality, and solid and hazardous waste management. Many of these laws, regulations and permit requirements are becoming increasingly stringent, and the cost of compliance with these requirements can be expected to increase over time.

The Safety, Health and Environment committee of the Board of Directors measures the Company’s safety, health, environmental and security performance against our management policies and procedures. The committee also monitors progress against our safety and environmental goals and targets, working closely with

management to ensure that appropriate strategies and processes are in place to promote a culture that prioritizes safety and environmental responsibility.

Our operating expenses, other than costs associated with asset retirement obligations, relating to compliance with environmental laws and regulations governing ongoing operations for 2014 were $129 million (2013 — $135 million, 2012 — $153 million).

The Company routinely undertakes environmental capital projects. In 2014, capital expenditures of $151 million (2013 — $83 million, 2012 — $81 million) were incurred to meet pollution prevention and control as well as other environmental objectives. Future capital expenditures are subject to a number of uncertainties, including changes to environmental regulations and interpretations, and enforcement initiatives. While we currently anticipate that our operating and capital expenditures related to environmental regulatory matters in 2015 will not differ materially from amounts expended in the past two years, at this time we are unable to estimate the capital expenditures we may make in subsequent years to meet pollution prevention and control objectives as well as other environmental objectives.

Environmental Requirements, Permits and Regulatory Approvals

Many of our operations and facilities are required to operate in compliance with a range of regulatory requirements, permits and approvals. We believe that we are currently in material compliance with existing regulatory programs, permits and approvals. Permits and approvals typically have to be renewed or reissued periodically. We may also become subject to new laws or regulations that impose new requirements or require us to obtain new or additional permits or approvals. However, there can be no assurance that such permits or approvals will be issued in the ordinary course. Further, the terms and conditions of future regulations, permits and approvals may be more stringent and may require increased expenditures on our part.

Air Quality. With respect to air emissions, we anticipate that additional actions and expenditures may be required to meet increasingly stringent US federal and state regulatory and permit requirements, including existing and anticipated regulations under the federal Clean Air Act. The US Environmental Protection Agency (“USEPA”) has issued a number of regulations establishing requirements to reduce air pollutant emissions. We continue to monitor developments in these various programs and to assess their potential impact on our operations.

On November 7, 2014, the USEPA proposed updated hazardous air pollutant emission standards for phosphoric acid manufacturing and phosphate fertilizer production (“Proposed Rule”). The Proposed Rule includes a number of changes to the current standard, the most significant of which appears to be a requirement to install controls for mercury emissions on some production equipment at the Aurora, North Carolina facility. The Company is evaluating the Proposed Rule and has filed comments

on it. The USEPA is expected to sign a final rule in July 2015. The impact of this rule cannot be determined until the final rule is signed.

Water Quality. Several ongoing initiatives relating to nutrient discharges may result in new regulatory restrictions that could have a material effect on either the Company or its customers. The litigation and rulemaking activity related to numeric standards for nutrient concentrations in certain surface waters in Florida are examples of the types of ongoing initiatives that could have a material adverse effect on the Company. In 2014, the USEPA approved Florida’s water quality standards, which apply numeric nutrient criteria to the majority of water bodies in the state, but also provide avenues for site-specific relief. The White Springs, Florida facility is currently using site-specific mechanisms and plans to seek to use such mechanisms in the future; however, in the event that Florida determines that the site-specific mechanisms are not appropriate, the facility may need to meet inflexible numeric nutrient criteria, which could result in having to install additional measures to control concentrations of nitrogen and phosphorous in permitted water discharges from the facility. Accordingly, it is unclear at this time whether the Company will need to expend capital costs at the White Springs plant to meet numeric nutrient water quality standards.

The litigation and rulemaking activity seeking to require the USEPA to establish numeric nutrient criteria for nitrogen and phosphorous in the Mississippi River basin and the Gulf of Mexico are other examples of the types of ongoing initiatives that could have a material effect on our customers and some of our facilities. These initiatives could require our customers to reduce or eliminate their uses of nitrogen and phosphorous or require our facilities to limit the amount of nitrogen and phosphorous in their water discharges. The decision by the USEPA to deny a petition by several non-governmental organizations seeking the establishment of these regulations is the subject of significant ongoing litigation.

Climate Change. We have determined that we will pursue a greenhouse gas mitigation strategy because climate change is of increasing concern to governments, elected officials, non-governmental organizations, community leaders and the general public. Increasing regulation of greenhouse gases could impact our operations by requiring changes to our production processes or increasing raw material, energy, production or transportation costs. We have assembled a multidisciplinary task force to assess the objectives of such a strategy along with the revenue opportunities and the corporate costs of doing so.

A source of greenhouse gases from our operations is process emissions from some of our nitric acid plants. In addition, the use of natural gas at our mines and as a feedstock in our ammonia production results in greenhouse gas emissions. The use of electricity and the transportation of materials associated with our operations are indirect sources of greenhouse gases.

For 2014 the Company had set a target of reducing greenhouse gas emissions per tonne of nitrogen by 4 percent from 2013 levels. The Company achieved this target and a major contributing factor was efficiency improvements at our Geismar nitric acid plant. The Company has set a target of reducing greenhouse gas emissions per tonne of nitrogen product by 5 percent from 2014 levels by 2018.

We continue to monitor the international efforts to address climate change.

In addition to the foregoing, the information under the first two bullets under “Nitrogen and phosphate” and the bullet under “General” contained in the third paragraph of “Legal and other matters” of Note 28 “Contingencies and Other Matters” on page 150 of the Company’s audited consolidated financial statements in our 2014 Annual Integrated Report, attached as Exhibit 13, is incorporated herein by reference.

Asset Retirement Obligations

Provisions are recognized when: (1) the Company has a present legal or constructive obligation as a result of past events; (2) it is probable that an outflow of resources will be required to settle the obligation; and (3) the amount has been reliably estimated. We have recorded in the Company’s audited consolidated financial statements provisions for decommissioning obligations (also known as asset retirement obligations) primarily related to mining and mineral activities. The major categories of asset retirement obligations include reclamation and restoration costs at our potash and phosphate mining operations (most particularly phosphate mining), including the management of materials generated by mining and mineral processing, such as various mine tailings and gypsum; land reclamation and revegetation programs; decommissioning of underground and surface operating facilities; general clean-up activities aimed at returning the areas to an environmentally acceptable condition; and post-closure care and maintenance. See Note 22 of the Company’s audited consolidated financial statements in the 2014 Annual Integrated Report for further discussion of the treatment of asset retirement obligations.

The estimation of asset retirement obligation costs depends on the development of environmentally acceptable closure and post-closure plans. In some cases, this may require significant research and development to identify preferred methods for such plans that are economically sound and that, in most cases, may not be implemented for several decades. We have continued to use appropriate technical resources, including outside consultants, to develop specific site closure and post-closure plans in accordance with the requirements of the various jurisdictions in which we operate. The asset retirement obligations are generally incurred over an extended period of time. At December 31, 2014, we had accrued a total of $609 million for asset retirement obligations. The current portion totaled $48 million.

In addition, the information contained in paragraphs four through six of “Supporting Information” of Note 29, “Guarantees” to the Company’s audited consolidated financial statements on page 151 of the Company’s 2014 Annual Integrated Report, attached as Exhibit 13, is incorporated herein by reference.

Site Assessment and Remediation

We are also subject to environmental statutes that address investigation and, where necessary, remediation of contaminated properties. The US Comprehensive Environmental Response, Compensation and Liability Act of 1980, (“CERCLA”), and other US federal and state laws impose liability on, among others, past and present owners and operators of properties or facilities at which hazardous substances have been released into the environment and persons who arrange for disposal of hazardous substances that are released into the environment. Liability under these laws may be imposed jointly and severally and without regard to fault or the legality of the original actions, although such liability may be divided or allocated according to various equitable and other factors. We have incurred and expect to continue to incur costs and liabilities because of our current and former operations, including those of divested and acquired businesses. We have generated and, with respect to our current operations, continue to generate substances that could result in liability for us under these laws.

We have accrued $32 million for costs associated with site assessment and remediation, including consulting fees, related to the clean-up of contaminated sites currently or formerly associated with the Company or its predecessors’ businesses. The current portion of these costs totaled $4 million. The accrued amounts include the Company’s or its subsidiaries’ expected final share of the costs for the site assessment and remediation matters to the extent the incurrence of the costs are likely and can be reasonably estimated.

In addition to the foregoing, the information under the first two paragraphs (including any bullets there under) of “Legal and other matters” of Note 28, “Contingencies and Other Matters” to the Company’s audited consolidated financial statements on pages 149 and 150 of the Company’s 2014 Annual Integrated Report, attached as Exhibit 13, is incorporated herein by reference.

It is often difficult to estimate and predict the potential costs and liabilities associated with these programs, and there is no guarantee that we will not in the future be identified as potentially responsible for additional costs under these programs, either as a result of changes in existing laws and regulations or as a result of the identification of additional matters or properties covered by these programs.

Facility and Product Security

Through our Safety, Health and Environment department, we regularly evaluate and address actual and potential security issues and requirements associated with our operations in the United States and elsewhere using approved security vulnerability methodologies. Additional actions and expenditures may be required in the future. In the United States, chemical facilities are regulated under the Maritime Transportation Security Act and the Chemical Facility Anti-Terrorism Standards. It is anticipated that Congress will continue to consider federal legislation designed

to reduce the risk of any future terrorist acts at industrial facilities. We believe that we are in material compliance with applicable security requirements, and we also have developed and adopted security measures and enhancements beyond those presently required at both our regulated and non-regulated facilities. To date, neither the security regulations nor our expenditures on security matters have had a material adverse effect on our financial position or results of operations. We are unable to predict the potential future costs to us of any new governmental programs or voluntary initiatives.

Presentation of Financial Information

We have three principal business segments: potash, nitrogen and phosphate. For information with respect to the sales, gross margin and assets attributable to each segment and to our North American and offshore sales, see Note 3, “Segment Information” to the Company’s audited consolidated financial statements as of December 31, 2014 and 2013 and for each of the years in the three-year period ended December 31, 2014, incorporated by reference under Item 8 of this Annual Report on Form 10-K.

International Financial Reporting Standards, as issued by the International Accounting Standards Board (“IFRS”)

We are a foreign private issuer in the United States that voluntarily files our audited consolidated financial statements with the SEC’s US domestic forms. We are permitted to file our audited consolidated financial statements with the SEC under IFRS, without a reconciliation to US generally accepted accounting principles (“US GAAP”). As a result, we do not prepare a reconciliation of our results to US GAAP. It is possible that certain of our accounting policies could be different from US GAAP.

Unless otherwise specified, financial information is presented in US dollars.

Where You Can Find More Information

We file annual, quarterly and current reports and other information with the SEC. You may read and copy any of the information on file with the SEC at the SEC’s Public Reference Room, 100 F Street, NE, Washington, DC 20549. Please call the SEC at 1-800-SEC-0330 for further information on the public reference room. In addition, the SEC maintains an Internet site at www.sec.gov that contains reports, proxy and information statements and other information regarding issuers that file, as we do, electronically with the SEC.

We make available, free of charge through our website, www.potashcorp.com, our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (the “Exchange Act”), as soon as is reasonably practicable after such material is electronically filed with or furnished to the SEC. We also make available, free of charge, through our website, our filings with Canadian securities regulatory authorities as soon as reasonably practicable after such material is electronically filed with the Canadian securities regulatory authorities. The Canadian securities regulatory authorities maintain a website (www.sedar.com) that contains our filings with the Canadian securities regulatory authorities. The information contained on, or accessible from our website or any other report or document we file with or furnish to the SEC or Canadian securities regulatory authorities, and references to our website are intended to be inactive textual references only, and is not incorporated by reference into this annual report on Form 10-K.

Item 1A. Risk Factors

Our performance and our future operations are and may be affected by a wide range of risks. Any or all of these risks, or other risks not presently known to us or that we do not deem material, could have a material adverse effect on our business, financial condition, results of operations and cash flows and on the market price of our common shares. We use our integrated risk management framework to identify risks across all segments of the Company, evaluate those risks, and implement strategies designed to mitigate those risks. This process is further described under “How We Approach Risk” on pages 21 and 22 in our 2014 Annual Integrated Report, attached as Exhibit 13 and incorporated herein by reference. See “Forward-Looking Statements” earlier in this Annual Report on Form 10-K.

A discussion of the Company’s strategies to mitigate certain risks is included in our “Management’s Discussion and Analysis of Financial Condition and Results of Operations” on pages 23 to 25 in our 2014 Annual Integrated Report, attached as Exhibit 13.

Global demand for our products, and in particular potash, our primary nutrient, may differ from our expectations.

We estimate the future level of demand for our products and attempt to meet this anticipated demand by adjusting our operational capability at certain facilities. Accurate estimates allow us to prevent either surplus inventory or missed sales opportunities. However, inaccurate estimates can lead to decreased profits. Reduced market demand can lead to underutilization of our production facilities. To the extent that we underutilize capacity, operating efficiencies decline, which may require operations or workforce changes that could negatively impact our financial performance.

We have taken major steps to prepare for an anticipated increase in potash demand in future years. We have undertaken several key expansion and debottlenecking projects at significant capital cost to substantially increase our potash production capability. This major investment is expected to be completed by the end of 2015 with ramp-up planned in 2015 and 2016. If demand does not increase as expected, our return on this investment and our ability to meet our growth expectation in a timely manner may be lower than expected.

Our customers’ decisions regarding the purchase of our products are affected by variable market, governmental, seasonal, economic, weather and other conditions, many of which are outside of our control and can be difficult to accurately predict. For example, farmers’ decisions about application rates for crop nutrients vary from year to year depending on a number of factors including, among others, crop prices, governmental actions, input costs, planting conditions and the level of the crop nutrient remaining in the soil following the previous harvest. Therefore, the timing of customer purchases will vary each year, and fertilizer