GAAP vs IFRS: Definitions, Differences & Accounting Rules

Published on: April 30, 2026

GAAP vs IFRS

WHAT IS US GAAP?

The Financial Accounting Standards Board (FASB) establishes and updates the accounting rules for the GAAP standard in the U.S. GAAP stands for Generally Accepted Accounting Principles. It is a list of accounting rules, concepts, and regulations that businesses in the United States apply when preparing their accounts. GAAP is required by law for all firms listed on the American Stock Exchange and is widely applied by public enterprises. Several standards have been developed to address particular industries’ practices.

Importance of GAAP

  • Consistency: GAAP standardises accounts, enabling investors and analysts to compare different firms' balance sheets and income statements easily.
  • Transparency: GAAP is highly useful in giving an unobstructed view of a company’s financial position.
  • Regulatory Compliance: Assists organisations to meet several regulatory obligations within the United States.

 

WHAT IS IFRS?

IFRS stands for International Financial Reporting Standards. The International Accounting Standards Board (IASB), founded in 2001 and based in Canary Wharf, England, oversees and updates the International Financial Reporting Standards (IFRS) to ensure that financial statements are in the same format, understandable, and retractable across national boundaries. 

IFRS is implemented in over 144 countries, including the EU, Canada, and Australia. It is mandatory for all companies operating in these regions if they are currently listed in the stock market; many private companies also use it.

Importance of IFRS

  • Global Consistency: Facilitates the preparation of accounts in standard rules used by businesses with international operations.
  • Transparency: It makes financial information more transparent and comparable.
  • Investor Confidence: International investors and regulatory bodies widely accept and recognise IFRS.

 

 

 

KEY DIFFERENCES BETWEEN GAAP AND IFRS

Feature

Generally Accepted Accounting Principles (GAAP)

International Financial Reporting Standards (IFRS)

Primary Applicability

United States

Over 144 countries worldwide

Basis of standard

GAAP is rules-based

IFRS is more principles-based

Governing Body

Financial Accounting Standards Board (FASB)

International Accounting Standards Board (IASB)

Balance Sheet

Emphasises historical cost with few fair value exceptions, such as that of marketable securities

More flexibility in choosing assets and liabilities that can be carried at fair value

Cash Flow Statement

Both direct and indirect methods are acceptable

The indirect method is preferred

Required Financial Statements

  • Balance Sheet
  • Income Statement
  • Statement of Cash Flows
  • Statement of Stockholders' Equity (often required) and
  • Notes to the Financial Statements

 

  • Balance Sheet,
  • Statement of Profit or Loss and Other Comprehensive Income 
  • Statement of Cash Flows, and 
  • Notes to the Financial Statements

 

 

DIFFERENCES IN ACCOUNTING TREATMENTS – US GAAP vs IFRS

  1. Expenditures Related to Research and Development

Research and development, or R&D, is a large expense in many industry sectors. Under GAAP, R&D expenses are booked as they occur. This is true under IFRS as well; however, IFRS also requires certain R&D expenditures to be capitalized.

  1.  Income from investments 

Under GAAP, it's largely dependent on the legal form of the asset or contract. Under IFRS, the legal form is irrelevant and only depends on when cash flows are received.

 

  1. Inventory accounting

The most notable difference between GAAP and IFRS involves their treatment of inventory. IFRS rules ban the use of last-in, first-out (LIFO) inventory accounting methods. GAAP rules allow for LIFO. Both systems allow for the first-in, first-out (FIFO) method and the weighted average-cost method. GAAP does not allow for inventory reversals, while IFRS permits them under certain conditions.

 

  1. Revaluation of assets

Under US GAAP, Fair market value revaluation is only allowed for marketable securities such as investments and stocks. IFRS allows for the revaluation of a wide range of assets, such as plant, property, equipment, PPE, inventories, and intangible assets, to the fair value of investments in Marketable Securities

 

Each country sets its own standards for financial reporting. For most of the world, accountants follow IFRS rules. Although there have been some discussions of transitioning the U.S. to the IFRS standard, there is little likelihood of that happening in the near future.

 

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