Cash vs. Accrual Accounting: Which Method Should Your Small Business Use?

The choice between cash and accrual accounting affects when income and expenses are recognized for tax purposes, which directly impacts taxable income and the timing of tax payments. Under the cash method, income is recognized when actually or constructively received, and expenses are deducted when paid. Under the accrual method, income is recognized when the right to receive payment is established (when services are performed or goods are delivered), and expenses are deducted when the liability is incurred (when the obligation arises, not when payment is made). The TCJA significantly expanded access to the cash method: under IRC 448(c), any business with average annual gross receipts of $32 million or less (the 2026 inflation-adjusted threshold; $31 million for 2025) can use the cash method, regardless of entity type. Prior to the TCJA, C-Corporations, partnerships with a C-Corp partner, and tax shelters were generally required to use the accrual method.

How does the accounting method choice affect taxes?

What triggers a required change in accounting method?

The IRS requires a change in accounting method when your current method doesn’t clearly reflect income (IRC 446), when your gross receipts exceed the threshold for using the cash method under IRC 448 ($32 million average for the prior 3 years, for tax years beginning in 2026), or when a new tax law mandates a different method. Voluntary changes (such as switching from cash to accrual to better match revenue and expenses) require filing Form 3115 with your tax return. Most accounting method changes require a Section 481(a) adjustment, which captures the cumulative difference between the old and new methods. A positive 481(a) adjustment (additional income) is spread over 4 years, while a negative adjustment (additional deduction) is taken entirely in the year of change. Changes made under the automatic consent procedures (Rev. Proc. 2015-13 for the procedures and Rev. Proc. 2025-23 for the list of automatic changes, or their successors) don’t need advance IRS approval but must follow detailed filing requirements.

Should I use cash basis or accrual basis accounting for my small business?

Cash basis records income when received and expenses when paid, making it simpler and giving you more control over timing. Accrual basis records income when earned and expenses when incurred, regardless of payment timing, providing a more accurate picture of profitability. The IRS requires accrual for businesses with inventory that have average annual gross receipts exceeding $32 million (for tax years beginning in 2026; $31 million for 2025). Below that threshold, you can choose either method. Most small service businesses use cash basis because of its simplicity and the ability to time income and deductions for tax planning. Once you choose a method, switching requires filing Form 3115 and may trigger a Section 481(a) adjustment that spreads the transition impact over four years.

How often should a small business reconcile its accounts?

Monthly reconciliation is the minimum standard for any business, but weekly reconciliation catches errors faster and makes month-end closing significantly easier. Bank reconciliation compares your accounting records to bank statements to identify timing differences (outstanding checks, deposits in transit) and errors (duplicate entries, missed transactions). Credit card reconciliation should happen monthly at minimum, matching each statement charge to a recorded transaction with the correct expense category and ensuring no unauthorized charges slipped through. Businesses with high transaction volume (retail, restaurants, e-commerce) benefit from daily point-of-sale reconciliation, which catches discrepancies before they compound into material misstatements at year-end.

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.