Explain the key principles of the accrual basis of accounting under GAAP and IFRS, and discuss how these principles influence the timing of revenue and expense recognition in financial statements.

Define the accrual basis of accounting, emphasizing revenue and expense recognition timing under GAAP and IFRS. Highlight the matching principle, revenue recognition criteria (e.g., earned and realizable), and expense recognition (incurred and measurable). Contrast with cash basis, explain how accrual affects financial statements, and note similarities/differences between GAAP and IFRS in application.

The accrual basis of accounting, required under both GAAP and IFRS, recognizes revenue when earned (not necessarily when cash is received) and expenses when incurred (not when paid). This aligns with the matching principle, ensuring revenues are paired with related expenses in the same period. For example, a company sells goods on credit; revenue is recognized upon delivery, not payment. Similarly, expenses like salaries are accrued even if unpaid. GAAP (ASC 606) and IFRS (IFRS 15) both mandate revenue recognition when control of goods/services transfers, but IFRS emphasizes a five-step model, while GAAP focuses on five criteria. Accrual accounting provides a more accurate picture of financial performance by smoothing cash flow fluctuations, though it increases complexity. Differences in standards may arise in specific industries (e.g., leases under IFRS 16 vs. ASC 842), but the core accrual principles remain aligned.