GAAP (generally accepted accounting principles) is a collection of commonly-followed accounting rules and standards for financial reporting. The acronym is pronounced "gap."
GAAP specifications include definitions of concepts and principles, as well as industry-specific rules. The purpose of GAAP is to ensure that financial reporting is transparent and consistent from one organization to another.
There is no universal GAAP standard and the specifics vary from one geographic location or industry to another. In the United States, the Securities and Exchange Commission (SEC) mandates that financial reports adhere to GAAP requirements. The Financial Accounting Standards Board (FASB) stipulates GAAP overall and the Governmental Accounting Standards Board (GASB) stipulates GAAP for state and local government. Publicly traded companies must comply with both SEC and GAAP requirements.
Many countries around the world have adopted the International Financial Reporting Standards (IFRS). IFRS is designed to provide a global framework for how public companies prepare and disclose their financial statements. Adopting a single set of world-wide standards simplifies accounting procedures for international countries and provides investors and auditors with a cohesive view of finances. IFRS provides general guidance for the preparation of financial statements, rather than rules for industry-specific reporting.