What Is GAAP?
GAAP (Generally Accepted Accounting Principles) is the common set of accounting standards, principles, and procedures that companies in the United States follow when preparing financial statements. It ensures financial reporting is consistent, comparable, and transparent across businesses.
What GAAP is and why it matters
GAAP is issued by the Financial Accounting Standards Board (FASB) and provides the rulebook for how transactions are recognized, measured, and disclosed. Its purpose is comparability: because every GAAP-compliant company follows the same principles — accrual basis, revenue recognition, matching, consistency — investors, lenders, and regulators can compare financial statements meaningfully and trust that they aren't manipulated. Public companies are required to follow GAAP; many private companies and lenders expect it too. Internationally, the equivalent framework is IFRS.
A worked example
Two companies each sign a $12,000 annual service contract paid upfront. Under GAAP's revenue-recognition principle, neither can book all $12,000 immediately — both must recognize $1,000 per month as the service is delivered, holding the rest as deferred revenue. Because both follow the same GAAP rule, an investor comparing them sees revenue reported on the same basis, rather than one inflating its numbers by booking the cash early.
How firms handle it today
Firms apply GAAP when preparing client financial statements — following recognition, matching, and disclosure rules — and adjust the books at close to bring cash-basis records onto a GAAP-compliant accrual basis where required.
Related terms
- Compliance
- Accrual accounting
- Financial statements
- Audit trail
- Materiality
FAQ
What does GAAP stand for?
Generally Accepted Accounting Principles — the standard framework for financial reporting in the US.
Who is required to follow GAAP?
Publicly traded US companies must; many private companies follow it too, often because lenders and investors require it.
What's the difference between GAAP and IFRS?
GAAP is the US framework; IFRS (International Financial Reporting Standards) is used in much of the rest of the world. They differ in some rules and in principles-versus-rules emphasis.