Only one country in the world requires US GAAP: the United States. Everywhere else, the dominant framework is International Financial Reporting Standards (IFRS), which 148 jurisdictions require for all or most publicly traded companies and financial institutions. A small group of large economies, including China, India, Indonesia, and Japan, keep their own national standards, though most of those track IFRS closely. That is the short version of the split between countries that use GAAP vs IFRS.1IFRS Foundation. Who Uses IFRS Accounting Standards?
Countries That Require IFRS
The IFRS Foundation profiles 169 jurisdictions. Of those, 148 require IFRS for all or most publicly accountable entities, and another 12 permit it for at least some domestic companies. In total, 161 have made a public commitment to a single set of global standards. Fifteen of the G20 economies require IFRS for all or most companies trading on their public markets.1IFRS Foundation. Who Uses IFRS Accounting Standards?
The standards themselves come from the International Accounting Standards Board (IASB), which sits under the IFRS Foundation.2IFRS Foundation. International Accounting Standards Board
The biggest single push into IFRS came from the European Union. Regulation (EC) No 1606/2002 required every company with securities on an EU regulated market to prepare consolidated financial statements under IFRS starting in 2005.3European Commission. Financial Reporting That one regulation swept dozens of countries into the framework at once.4IFRS Foundation. IFRS – European Union
Outside Europe, the major IFRS jurisdictions include Canada, Australia, South Korea, South Africa, Brazil, and Russia. Canada permits US GAAP for certain cross-listed issuers but requires IFRS for most publicly accountable entities. The United Kingdom kept IFRS-based reporting for listed companies after leaving the EU and uses its own FRS 102 framework for private companies.1IFRS Foundation. Who Uses IFRS Accounting Standards?
Where US GAAP Applies
US GAAP is used almost entirely within the United States. The Securities and Exchange Commission requires every domestic public company to file its financial statements under GAAP, including annual Form 10-K and quarterly Form 10-Q filings. The Financial Accounting Standards Board (FASB), a private-sector body, writes the rules and organizes them in the Accounting Standards Codification, which FASB describes as “the single official source of authoritative, nongovernmental U.S. generally accepted accounting principles.”5Financial Accounting Standards Board. Standards – Section: Accounting Standards Codification
No other country adopts US GAAP as its primary reporting standard, and the United States is the only G20 member that does not permit its own domestic companies to use IFRS.1IFRS Foundation. Who Uses IFRS Accounting Standards? Foreign private issuers listing on US exchanges can file under IFRS, which is covered further down, but American companies filing domestically cannot.
Countries With Their Own National Standards
A handful of major economies keep distinct national frameworks. The IFRS Foundation names China, India, and Indonesia among G20 nations that have adopted local standards “substantially in line with IFRS” without setting a timetable for full adoption. Japan permits IFRS voluntarily but does not require it. Outside the G20, Bolivia, Egypt, Honduras, Macao SAR, and Vietnam also maintain their own frameworks.1IFRS Foundation. Who Uses IFRS Accounting Standards?
China
Companies with publicly traded securities in mainland China use Chinese Accounting Standards for Business Enterprises (ASBEs), issued by the Ministry of Finance in 2006 with substantial convergence toward IFRS. A 2015 joint statement between the Ministry and the IASB reaffirmed the goal of full convergence, though no firm deadline has been set. ASBEs track IFRS concepts closely but keep modifications suited to China’s regulatory setting.6IFRS Foundation. Use of IFRS Standards by Jurisdiction: China
India
India uses Indian Accounting Standards (Ind AS), designed as converged with IFRS rather than identical to it. Independent analyses have identified 40 or more differences, including carve-outs required by Indian regulators. India has committed to global convergence in principle without a fixed date for full adoption.1IFRS Foundation. Who Uses IFRS Accounting Standards?
Japan
Japan is unusual in letting listed companies choose among four frameworks: Japanese GAAP (JGAAP), IFRS, US GAAP (with regulatory permission), and Japan’s Modified International Standards, a hybrid that keeps features of JGAAP such as goodwill amortization.7Accounting Standards Board of Japan. About Japanese GAAP JGAAP is the most widely used because Japan’s Companies Act requires it as the baseline for statutory reporting.8The Japanese Institute of Certified Public Accountants. Accounting Standards Voluntary IFRS use has grown among large companies chasing international capital, from 10 companies in 2012 to more than 230 by mid-2020, with over 170 additional companies publicly planning to switch.
What Changes When the Framework Changes
The line most often drawn between the two systems is that US GAAP is rules-based while IFRS is principles-based. GAAP writes detailed guidance for specific situations. IFRS sets broader principles and expects accountants to apply judgment. That difference produces concrete divergences.
Inventory is the clearest example. US GAAP permits the Last-In, First-Out (LIFO) method, which many American manufacturers and retailers use to lower taxable income when prices are rising. IFRS bans LIFO. A US company shifting to IFRS would have to restate inventory under a different method and could face a large one-time tax hit as a result.
Goodwill is treated differently too. Under IFRS, goodwill is never amortized and must be tested for impairment annually. US GAAP now permits public companies to amortize goodwill, and private companies have had that option for years. Development costs also part ways: IFRS requires capitalization once specific criteria are met, while US GAAP generally expenses research and development as incurred, with narrow software exceptions. These distinctions change reported earnings, balance sheet asset values, and the ratios lenders and investors watch.
Cross-Border Listings and the SEC Reconciliation Rule
When a company reports under one framework and lists on an exchange that uses another, the mismatch turns into a compliance question. The clearest example is the SEC’s treatment of foreign private issuers.
Before 2008, every FPI filing with the SEC had to reconcile its statements to US GAAP even if it already reported under IFRS. In November 2007 the SEC eliminated that requirement for foreign private issuers whose financial statements comply with IFRS as issued by the IASB.9U.S. Securities and Exchange Commission. Final Rule: Acceptance From Foreign Private Issuers of Financial Statements Prepared in Accordance With IFRS FPIs that report under any other framework, including a national standard like Ind AS or ASBEs, still must provide a full reconciliation to US GAAP in their Form 20-F annual report, quantifying the differences in net income and shareholders’ equity.10U.S. Securities and Exchange Commission. Form 20-F – Registration Statement and Annual Report for Foreign Private Issuers Some large multinationals with reporting duties on both sides maintain dual systems and produce two complete sets of financial statements.
Will the US Move to IFRS?
The question has come up in accounting circles for more than a decade. The SEC studied the possibility of requiring or permitting IFRS for US domestic companies through staff reports and comment periods roughly between 2008 and 2012, and the process stalled. The staff report declined to recommend a transition path, and the Commission has deferred the decision indefinitely.
The barriers are practical. US tax law, banking regulation, and countless private contracts are written around GAAP. A wholesale switch would force every public company to retrain staff, rebuild systems, and restate historical financials, and the LIFO issue alone would trigger a large tax event across American industry. Instead, the FASB and IASB have pursued targeted convergence on specific topics such as revenue recognition and leases, closing some of the biggest gaps without full adoption. That piecemeal approach is the working answer for now.