Cash vs Accrual Accounting Tax Impact Calculator (2026)
Cash accounting recognizes income when received and expenses when paid. Accrual recognizes when earned/incurred regardless of cash timing. Small businesses under $30M gross receipts can use cash method — often a meaningful tax deferral.
| Cash method revenue (revenue - AR) | — |
| Cash method expenses (expenses - AP - inv) | — |
| Cash method taxable income | — |
| Accrual revenue (full earned) | — |
| Accrual expenses (full incurred minus inventory) | — |
| Accrual taxable income | — |
| Tax deferred (cash advantage) | — |
Cash accounting recognizes income when received and expenses when paid. Accrual accounting recognizes when earned or incurred regardless of cash timing. Small businesses with average annual gross receipts under $30M (2026 inflation-adjusted from TCJA's $25M) can elect cash method — often deferring meaningful tax through year-end AR/AP timing.
The Year-End Timing Levers (Cash Method Only)
Cash-method businesses control tax timing through invoicing and payment cadence. (1) Delay December invoicing to push income recognition to next tax year — a December 28 invoice paid in January is next year's income. (2) Pay January vendor bills in December to accelerate deduction into current year. (3) Prepay vendor expenses for up to 12 months ahead (rent, insurance, subscriptions, supplies). (4) Bonus depreciation or Section 179 on equipment placed in service by Dec 31 — full deduction in current year. (5) Make pre-Dec-31 retirement plan contributions. These levers don't exist for accrual taxpayers since recognition is timing-independent of cash.
When Accrual Is Required Or Better
Required when (1) gross receipts exceed $30M average over prior 3 years, (2) you have C-corp tax structure with inventory, (3) your investors or lenders require GAAP financials. Better when (1) you want to match revenue with expense for management decisions, (2) seasonal cash flow makes cash-method timing misleading, (3) you plan to sell the business — buyers want accrual-based numbers. Many businesses use accrual for management reporting and cash for tax — that's allowed, but the tax method must be applied consistently. Switching methods (cash to accrual or vice versa) requires IRS consent via Form 3115 and may trigger a Section 481(a) adjustment spreading the cumulative impact over up to 4 years.
Last updated May 2026. Sources: IRS Pub 538 — Accounting Periods.