What Is the All Events Test for Accrual Taxpayers?

The all events test is the federal timing rule that tells accrual-method businesses when to put income and deductions on a tax return. For income, you report it in the year two things are true: every event needed to fix your right to the payment has happened, and you can figure the amount with reasonable accuracy. For a deduction, those same two conditions apply to the liability, and a third condition — economic performance — has to be satisfied as well. Cash changing hands is not part of the test in either direction.

When Income Becomes Reportable

Under the accrual method, you include income in the tax year all events have occurred that fix your right to receive it and the amount is determinable with reasonable accuracy.¹ Whether the customer has actually paid is irrelevant. The question is whether you have earned the money.

Your right to payment usually becomes fixed when the work is finished or the goods are delivered. Finish a $15,000 consulting engagement in December and the income belongs in that tax year even if the client pays in February. Ship a $75,000 machine in November with title passing on delivery, and the sale is that year’s income regardless of the invoice date.

“Reasonable accuracy” is a lower bar than people expect. You do not need a final figure. A contract price, a rate schedule, or logged hours that support a defensible calculation is enough. What fails the test is ignoring earned income because you have not gotten around to sending an invoice.

Advance Payments You Receive

When a customer pays before you deliver, the default is to include the whole payment in income the year it lands.² A deferral election lets you soften that: include the portion recognized as revenue on your financial statements in the year of receipt, and push the rest into the following year.³ “Following year” is a hard ceiling. Even a five-year contract cannot be spread beyond the very next tax year for tax purposes.

The election covers advance payments for goods, services, and certain other categories identified by the IRS. It does not cover rent, insurance premiums, payments tied to financial instruments, and several other items.² Once elected for a category, it stays in place unless the IRS consents to a change.

When a Deduction Becomes Allowable

The deduction side mirrors the income side and then adds a step. You can deduct an expense when all events have occurred that establish the fact of the liability, the amount is determinable with reasonable accuracy, and economic performance has occurred.⁴

“Fact of the liability” means a legal or contractual obligation to pay already exists and is no longer contingent on a future event. A signed December settlement agreement for $5,000 fixes the liability that month even if no check is cut. A demand letter or a verbal promise does not.

Reasonable accuracy works the same way it does for income. A December utility bill estimated at $1,200 from meter readings qualifies even if the January invoice shows a slightly different number. The regulation is explicit that uncertainty about the exact amount does not prevent deducting the portion you can compute with reasonable accuracy.⁴

Economic Performance

Economic performance is what stops businesses from claiming today’s deduction for goods or services they will not receive for years. You cannot deduct a liability earlier than the year the underlying activity actually happens.⁵ What counts as performance depends on the type of expense:

Services provided to you: performance occurs as the other party does the work. Prepay $30,000 for a three-year maintenance contract and you deduct it as the maintenance is performed each year, not all at once at signing.⁵
Property provided to you: performance occurs when the property is delivered or title transfers.
Property you use: performance occurs as you use it.
Tort liabilities and workers’ compensation: performance occurs only when you actually pay the person you owe. A court judgment, a reserve, or funds placed in escrow generally does not count unless the transfer discharges your obligation to the claimant.⁵

That last category is the one people misapply. For most liabilities, you look at when the other side delivers something to you. For tort and workers’ compensation, you look at when the money leaves your hands.

The Recurring Item Exception

Economic performance has a safety valve for routine expenses. Meet four conditions and you can deduct a liability in the year the first two prongs are satisfied, before performance has actually occurred.⁵

The all events test is met by year-end, setting the economic performance requirement aside.
Economic performance occurs within 8½ months after the close of the tax year.
The expense recurs regularly, and you consistently deduct that type of expense in the year the all events test is met.
Either the item is not material, or deducting it in the earlier year better matches the income it helped generate.⁶

This is what makes accrual accounting workable day to day. A December electric bill where the meter is read in January fits cleanly: fixed and estimable by December 31, paid within a few months, recurring every month. The exception never applies to tort or workers’ compensation liabilities, and materiality is judged both in absolute terms and against other income and expenses from the same activity, so a large one-time expense will not qualify on the immateriality ground alone.⁶

Contested Liabilities

The all events test does not fit neatly when you owe money but are fighting the amount, because a contested liability is not truly fixed. A separate rule lets you deduct a contested liability in the year you transfer money or property to satisfy the asserted claim, provided four conditions are met: you are actively contesting the liability, you transfer money or other property to cover the asserted amount, the contest continues after the transfer, and the deduction would otherwise be allowable if the item were not contested.⁷ This gives businesses a way to claim the deduction without waiting years for litigation to resolve, but only if real money is put on the line.

Year-End Bonuses

Accrued bonuses are one of the most common places timing goes wrong. To deduct bonuses in the year employees earned them, the company must pay them by the 15th day of the third calendar month after the tax year closes. For a calendar-year taxpayer, that is March 15.⁸ If the obligation is fixed by December 31 (the performance conditions are met and the company is bound to pay) and the amount is determinable, the first two prongs are satisfied; paying by March 15 satisfies economic performance. Miss the window and the deduction shifts to the year of payment.

The fact of the liability is where bonus deductions most often fail on audit. A board resolution passed after year-end, a fully discretionary pool, or a plan that lets management claw back awards can all undercut the argument that the liability was fixed by December 31. A written bonus plan with clear performance criteria and a calculation method in place before year-end holds up better.

Who Has to Apply the Test

Not every business is on the accrual method. Three categories of taxpayers are required to use it, and therefore required to apply the all events test:⁹

C corporations
Partnerships with a C corporation partner
Tax shelters, regardless of size

Smaller businesses get a carve-out through the gross receipts test. If your average annual gross receipts over the prior three years do not exceed $32 million, you can generally use the cash method instead.¹⁰ That figure applies to tax years beginning in 2026 and adjusts periodically for inflation. Tax shelters cannot use this escape hatch at any size.⁹

Sole proprietors, most partnerships without corporate partners, and S corporations under the threshold generally may use cash-basis accounting. Some choose accrual anyway because it better fits their operations. Once you are on the accrual method by any route, the all events test governs your timing.

Fixing an Incorrect Method

If you have been using the wrong method, you cannot simply switch on next year’s return. Changing an accounting method requires filing Form 3115 with the IRS.¹¹ Many changes qualify for automatic consent, but the procedural steps still have to be followed exactly.

The bigger issue is the section 481(a) adjustment. Changing methods requires you to account for items that would otherwise be duplicated or omitted in the transition.¹² If switching to accrual means you now recognize previously deferred income, that positive adjustment is extra taxable income. For a voluntary change, the IRS generally lets you spread a positive adjustment over four tax years.¹³ A negative adjustment goes entirely into the year of change.

When the IRS forces the change instead of you volunteering, the entire positive adjustment typically hits in a single year with no four-year spread.¹³ Volunteering the correction is almost always cheaper than being caught. For any of this, IRS Publication 538 covers the accounting-period and method-change mechanics in more detail.¹⁴

1
eCFR. 26 CFR 1.451-1 – General Rule for Taxable Year of Inclusion
2
Office of the Law Revision Counsel. 26 USC 451 – General Rule for Taxable Year of Inclusion
3
eCFR. 26 CFR 1.451-8 – Advance Payments for Goods, Services, and Other Items
4
eCFR. 26 CFR 1.461-1 – General Rule for Taxable Year of Deduction – Section: (a)(2) Taxpayer Using an Accrual Method
5
Office of the Law Revision Counsel. 26 USC 461 – General Rule for Taxable Year of Deduction
6
eCFR. 26 CFR 1.461-5 – Recurring Item Exception
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Office of the Law Revision Counsel. 26 US Code 461 – General Rule for Taxable Year of Deduction
8
Internal Revenue Service. Revenue Ruling 2011-29
9
Office of the Law Revision Counsel. 26 USC 448 – Limitation on Use of Cash Method of Accounting
10
Internal Revenue Service. Rev. Proc. 2025-32
11
Internal Revenue Service. About Form 3115, Application for Change in Accounting Method
12
Office of the Law Revision Counsel. 26 USC 481 – Adjustments Required by Changes in Method of Accounting
13
Internal Revenue Service. 4.11.6 Changes in Accounting Methods
14
Internal Revenue Service. Publication 538 – Accounting Periods and Methods