Accrual Accounting

Accrual accounting is the foundation of GAAP-compliant financial reporting for U.S. public companies. The SEC requires public companies to prepare their financial statements on the accrual basis, reflecting the principle that financial results should be matched to the period in which the underlying economic activity occurred, not the period in which cash moves hands. This approach produces a more accurate picture of a company's economic performance than cash-based accounting.

The matching principle is the practical application of accrual accounting. It requires that revenues and the expenses associated with generating those revenues be recognized in the same accounting period. For example, if a software company signs a one-year subscription contract in December and collects the full payment upfront, it does not recognize all of the revenue in December under GAAP. Instead, it recognizes one-twelfth of the revenue each month over the 12-month contract term, with the remaining portion carried on the balance sheet as deferred revenue (a liability).

On the expense side, accrual accounting means that costs are recorded when they are incurred, not when the invoice is paid. If a company receives services in December but does not pay the vendor until January, it records the expense in December. This creates what are called accrued liabilities on the balance sheet — amounts owed but not yet paid. Similarly, if a company pays for insurance coverage in advance, it does not expense the full amount immediately; instead, it records a prepaid asset and recognizes the expense ratably over the coverage period.

The primary limitation of accrual accounting is that reported earnings can diverge significantly from actual cash generation. A company can report strong GAAP profits while simultaneously burning cash — for example, by selling products on credit that customers are slow to pay. This is why sophisticated investors supplement GAAP income statement analysis with a careful review of the cash flow statement, which shows actual cash inflows and outflows and reconciles GAAP net income to operating cash flow.

FASB's ASC 606 (Revenue from Contracts with Customers), adopted by public companies in 2018, significantly revised the rules for when and how revenue is recognized under GAAP. The standard requires companies to follow a five-step model that identifies performance obligations in contracts and recognizes revenue as those obligations are satisfied — a framework that changed revenue recognition timing for many industries.