Accounting Method

What Is an Accounting Method?

An accounting method is the set of rules a business follows to decide when a transaction appears in its financial statements. It answers basic timing questions: when revenue counts as earned, when an expense counts as incurred, and how the cost of goods held for sale is tracked. Two companies with identical sales and spending can report different profits if they use different methods, so the choice matters when comparing results.

Cash Basis Versus Accrual Basis

The two most common approaches are cash basis accounting and accrual accounting. Under the cash basis, income is recorded when money is received and expenses when they are paid. Under the accrual basis, income is recorded when it is earned and expenses when they are incurred, regardless of when cash changes hands. A business that sends an invoice in December but is paid in January would record that revenue in December under accrual accounting and in January under cash accounting. Accrual accounting gives a fuller picture of ongoing performance, while cash accounting is simpler and shows the actual money moving through the business.

Inventory Valuation Methods

Businesses that sell physical products also need a way to assign costs to inventory. Common approaches include:

• first-in, first-out (FIFO), which assumes the oldest units are sold first
• last-in, first-out (LIFO), which assumes the newest units are sold first
• Weighted average cost, which spreads the total cost of goods across all units

When costs are changing, these approaches can produce different cost of goods sold and therefore different profit figures. The choice affects both the income statement and the balance sheet.

Why It Matters to Investors

Accounting methods influence reported earnings and financial ratios, so they can distort comparisons between companies. Investors can check which methods a company uses in the notes to its financial statements, which describe its significant accounting policies. In the United States, generally accepted accounting principles (GAAP) generally require accrual accounting for most companies, while some smaller businesses may be permitted to use the cash basis. Companies that change a method are generally expected to disclose the change and explain its effect, so readers can adjust their comparisons accordingly.