International accounting standards are a unified set of financial reporting rules used by companies in more than 140 jurisdictions, built so investors, lenders, and regulators can read a Japanese manufacturer’s accounts, a Brazilian retailer’s accounts, and a German bank’s accounts on the same terms.1IFRS Foundation. The Use of IFRS Accounting Standards Around the World The framework has two parts. International Financial Reporting Standards (IFRS) are issued by today’s standard-setter. International Accounting Standards (IAS) are the older rules inherited from its predecessor. Together they govern how companies recognize revenue, value inventory, report leases, measure asset impairments, and present the financial statements themselves.
IFRS and IAS: Two Generations, One Framework
The older set, IAS, was written by the International Accounting Standards Committee, which operated from 1973 until a 2001 reorganization created the current standard-setter.2Financial Accounting Standards Board. Brief History of International Financial Reporting Standards When the new board took over, it adopted the existing IAS rules rather than starting over. The newer set, IFRS, covers what the board has issued since 2001 and often replaces older IAS rules.
Both carry equal authority. A company claiming full compliance must follow every applicable rule from both. The IAS list has shrunk over time as newer IFRS standards supersede predecessors, but several IAS rules still govern major areas, including inventory valuation, income taxes, and the presentation of financial statements.
Who Writes the Rules and Who Enforces Them
The International Accounting Standards Board (IASB) writes and maintains the standards. It sits within the IFRS Foundation and is headquartered in London.3IFRS Foundation. Who We Are The board has no power to force any country to adopt its work. That decision belongs to each jurisdiction’s own regulators and legislators.
Enforcement also sits with national regulators, not with the IASB. Each jurisdiction that adopts IFRS is responsible for ensuring its companies comply, and regulators support consistent application by monitoring how issuers within their borders apply new standards.4IFRS Foundation. Resources for Regulators Enforcement quality therefore varies from country to country, which matters when comparing financial statements from different markets.
The Standards That Shape Most Financial Statements
A handful of individual standards come up in almost every set of accounts because they govern transactions common to nearly every industry.
IFRS 15: Revenue From Contracts With Customers
IFRS 15 replaced several older revenue rules with a single five-step model. A company must identify the contract, determine each separate promise it has made (called performance obligations), calculate the total price, allocate that price across the promises, and recognize revenue only as each promise is fulfilled. The standard was developed jointly with the U.S. Financial Accounting Standards Board, making revenue one of the few areas where IFRS and American rules are fully aligned.
IFRS 16: Leases
Before IFRS 16, companies could keep many leases off their balance sheets, making it hard for investors to see how much a business actually owed. Under the current rule, a lessee must recognize a right-of-use asset and a corresponding lease liability at the start of almost every lease.5IFRS Foundation. IFRS 16 Leases Billions of dollars in previously hidden obligations now appear directly on corporate balance sheets.
IAS 2: Inventories
IAS 2 governs how companies measure inventory cost. It permits only first-in, first-out (FIFO) and weighted average cost. The last-in, first-out (LIFO) approach is not allowed.6IFRS Foundation. IAS 2 Inventories The prohibition matters because LIFO can significantly lower reported profits during periods of rising prices, so the choice of method changes the numbers investors see.
IAS 16: Property, Plant, and Equipment
IAS 16 gives companies a choice for reporting long-lived physical assets like buildings and machinery. They can use a cost model, which carries the asset at original cost minus depreciation, or a revaluation model, which adjusts the asset to fair value.7IFRS Foundation. IAS 16 Property, Plant and Equipment A company that chooses revaluation must apply it to the entire class of similar assets and revalue frequently enough that the reported figure stays close to fair value.
IAS 36: Impairment of Assets
When an asset loses value, IAS 36 requires the company to write it down. If conditions later improve, the company must reverse the impairment loss and write the asset back up, though never above what it would have been without the original write-down.8IFRS Foundation. IAS 36 Impairment of Assets Goodwill is the one exception; impairment there is permanent.
The Financial Statements a Compliant Company Must Produce
A complete set of IFRS-compliant financial statements has five components, each with a distinct purpose.9IFRS Foundation. IAS 1 Presentation of Financial Statements
- The statement of financial position, or balance sheet, is a snapshot of what the company owns, what it owes, and the residual equity belonging to shareholders at a specific date.
- The statement of profit or loss and other comprehensive income summarizes performance over the reporting period, listing revenue and expenses along with gains and losses that bypass the main income statement, such as certain asset revaluations.
- The statement of changes in equity tracks how ownership interest shifted during the period through new share issues, dividends paid, and accumulated profits or losses.
- The statement of cash flows reconciles accrual-based profit with the actual cash generated from operations, investing, and financing activities. This is where you can see whether a company reporting healthy profits is actually collecting the cash to back them up.10IFRS Foundation. IAS 7 Statement of Cash Flows
- The notes to the financial statements set out the accounting policies used, break down complex line items, and disclose risks and uncertainties. The notes often carry the most useful information for detailed analysis.
The Principles Behind the Rules
A conceptual framework sits underneath the individual standards. It does not override any specific rule, but it guides the board when writing new ones and helps companies handle situations where no standard applies directly.
Two qualities define useful financial information. Relevance means the data can influence a decision by an investor or lender, either by helping predict future performance or by confirming what happened in the past. Faithful representation means the numbers reflect economic reality rather than legal form. A transaction that is technically a sale but functions as a financing arrangement, for example, should be reported as financing.
Information is material if leaving it out, misstating it, or obscuring it could reasonably influence readers’ decisions. The IASB added “obscuring” alongside omission and misstatement, recognizing that information can be rendered useless by unclear language, by scattering related items across the report, or by hiding important data among trivial detail.
Two foundational assumptions run through every standard. Accrual accounting requires transactions to be recorded when the economic event occurs, not when cash changes hands.11IFRS Foundation. Conceptual Framework for Financial Reporting A company that delivers goods in December but collects payment in January records the revenue in December. The going concern assumption presumes the business will keep operating for the foreseeable future, which affects how assets are valued.12IFRS Foundation. Going Concern – A Focus on Disclosure If management intends to shut down or has no realistic alternative, the financial statements must be prepared on a different basis and the situation must be disclosed prominently.
How IFRS Differs From U.S. GAAP
The United States remains the largest economy that has not adopted IFRS for domestic companies. American public companies follow U.S. Generally Accepted Accounting Principles (GAAP), maintained by the Financial Accounting Standards Board. The two frameworks agree on many fundamentals, but several differences change the numbers investors see.
- Inventory costing: IFRS prohibits LIFO; U.S. GAAP permits it. LIFO produces lower profits during inflationary periods and a lower tax bill, which is the main reason it persists in the U.S.6IFRS Foundation. IAS 2 Inventories
- Impairment reversals: IFRS requires reversals on non-goodwill assets when conditions improve. U.S. GAAP prohibits all reversals, so an asset written down during a downturn stays written down even after a full recovery.8IFRS Foundation. IAS 36 Impairment of Assets
- Asset revaluation: IFRS allows property, plant, and equipment to be carried at fair value under the revaluation model. U.S. GAAP requires historical cost, with no upward adjustment.
- Principles vs. rules: IFRS standards tend to describe principles and leave judgment to preparers. U.S. GAAP often provides detailed, prescriptive rules. Principles-based standards offer flexibility but leave room for manipulation; rules-based standards are more consistent but struggle with novel transactions.
The SEC accepts financial statements from foreign companies listed on U.S. exchanges when those statements are prepared using IFRS as issued by the IASB, without requiring reconciliation to GAAP. The commission approved that treatment in 2007.13U.S. Securities and Exchange Commission. SEC Takes Action to Improve Consistency of Disclosure to U.S. Investors in Foreign Companies
IFRS for Small and Medium-Sized Entities
Full IFRS was designed for large, publicly traded companies. The IASB also publishes a simplified version, IFRS for SMEs, available to any entity that does not have public accountability, meaning it has not issued debt or equity on a public exchange and does not hold assets in a fiduciary capacity for outsiders (like a bank or insurance company).
The SME standard reduces disclosure requirements, drops some of the more complex topics, and consolidates guidance into a single document. Fair value measurement, for example, is handled in one section rather than spread across multiple rules. A third edition takes effect on January 1, 2027, with early application permitted. U.S. private companies have had the option to use IFRS for SMEs since 2008, though uptake has been limited because lenders and tax authorities are used to GAAP-based reports.
Where the Standards Are Used
Companies in more than 140 jurisdictions are required to use IFRS when reporting their financial results.1IFRS Foundation. The Use of IFRS Accounting Standards Around the World The European Union required all companies whose securities trade on a regulated EU or EEA exchange to use IFRS for their consolidated financial statements starting in 2005.14IFRS Foundation. European Union Adoption is not always a wholesale copy; some countries adopt IFRS with minor modifications or carve-outs to address local legal requirements.
Sustainability Disclosure Standards
The IFRS Foundation expanded beyond traditional financial reporting in 2023 by establishing the International Sustainability Standards Board and issuing IFRS S1 (general sustainability disclosures) and IFRS S2 (climate-related disclosures).15IFRS Foundation. IFRS Foundation Publishes Jurisdictional Profiles Providing Transparency and Evidencing Progress Towards Adoption of ISSB Standards These standards require sustainability-related financial disclosures to sit within general-purpose financial reports rather than in a separate voluntary document.
As of early 2026, 21 jurisdictions have adopted the ISSB standards on a voluntary or mandatory basis, and another 16 have said they plan future adoption. Brazil made reporting mandatory from January 2026. Canada adopted the standards on a voluntary basis in 2025. The United Kingdom has proposed aligning its corporate climate disclosures with ISSB standards starting in 2027.