There are ten overarching principles of GAAP: • Regularity • Accounting complies with GAAP. • Consistency • Accounting remains consistent and comparable across periods. • Sincerity • Accounting is
objective, factual, and accurate. • Permanence of methods • Accounting does not change across periods. • Non-compensation • Accounting abides by the
convention of disclosure, "with no prospect of debt compensation" • Prudence • Accounting abides by the
convention of conservatism, is "timely and realistic". • Continuity • Accounting assumes
going concern, that is, that the company will continue its business indefinitely. This validates the methods of asset capitalization,
depreciation, and
amortization. Only when liquidation is certain is this assumption not applicable. • Periodicity • Accounting periods are regular and consistent. •
Materiality • Accounting is based on factual information, and assets are valued at
historical cost rather than
fair market value. • Utmost
good faith • Accounting is honest.
Accrual accounting According to the
revenue recognition principle, companies should record revenue when earned and not when received;
cash flows do not control for the recognition of revenue. Rather, the
basis of accounting is on an accrual basis rather than on a cost basis. At the same time, by the convention of conservatism, losses must be recognized when their occurrence becomes probable, whether or not they have actually occurred.
Matching principle The
matching principle states that
expenses have to be matched with revenues as long as it is reasonable to do so. Expenses are recognized not when work is performed or when products are produced, but when the work or the product actually makes a contribution to revenue. Only if no connection with revenue can be established may costs be charged as expenses to the current period. This principle allows greater evaluation of actual profitability and performance.
Inventory GAAP allows for
FIFO, LIFO, and
weighted inventory methods.
Departures Under the
AICPA's Code of Professional Ethics under
Rule 203 – Accounting Principles, a member must depart from GAAP if following it would lead to a material misstatement on the financial statements, or otherwise be misleading. In the departure, the member must disclose, if practical, the reasons why compliance with the accounting principle would result in a misleading financial statement. Under
Rule 203-1 – Departures from Established Accounting Principles, the departures are rare, and usually take place when there is new legislation, the evolution of new forms of business transactions, an unusual degree of materiality, or the existence of conflicting industry practices. ==Sources of law==