IRC Section 448(c) Gross Receipts Test: Rules and Exemptions

The IRC 448(c) gross receipts test lets a business use the cash method of accounting if its average annual gross receipts over the prior three tax years do not exceed an inflation-adjusted threshold. For tax years beginning in 2026, that threshold is $32 million.¹ Passing the test does more than clear you for cash-basis accounting. It also exempts you from the uniform capitalization rules, from the business interest limitation under Section 163(j), and from the percentage-of-completion requirement on shorter long-term construction contracts, and it opens up simplified inventory accounting.²

How to Run the Three-Year Average

Add up gross receipts for the three tax years immediately before the year you are testing, then divide by three. If that average is at or below the threshold for the year in question, you pass. The determination is made fresh every year, so a business that qualifies in one year can fail the next if revenue grows.

A business checking eligibility for its 2026 tax year adds 2023, 2024, and 2025 receipts and divides by three. If the average is $32 million or less, it qualifies for 2026.

Short Years and Newer Businesses

A short tax year (less than 12 months) inside the look-back window has to be annualized. Multiply the short-period receipts by 12, then divide by the number of months in the short period. That prevents a partial year from artificially deflating the average.

If the business has not existed for a full three years, you average over the years it has existed. Two full prior years means you divide by two.

Predecessor Entities

You cannot reset the clock by reorganizing. If a business transferred operations to a new entity in a tax-free transaction, the predecessor’s gross receipts count toward the new entity’s three-year average.³

What Counts as Gross Receipts

Gross receipts here are broader than revenue or gross profit. Start with total amounts received from all sources without subtracting cost of goods sold or any other expense. The only direct reduction allowed is for returns and allowances.

Include:

Sales revenue from goods or services, net of returns and allowances
Investment income: interest, dividends, rents, royalties, and annuities, even if unrelated to your core business
The full selling price of capital assets or business property sold, with no reduction for the asset’s adjusted basis

That last item surprises people. Sell a piece of equipment for $50,000 that had a $10,000 basis and the entire $50,000 counts. The basis does not come out.

Exclude:

Pass-through amounts such as sales tax collected for a government or payments received as an agent for another party
Loan proceeds, and repayments of a loan you made
Property received in a qualifying like-kind exchange under Section 1031, since the transaction produces no recognized income⁴

Aggregating Related Entities

You cannot split operations across separate entities to duck the threshold. All entities treated as a single employer must combine their gross receipts before running the three-year average.⁵ Aggregation is mandatory, not elective. If the relationships exist, the receipts combine.

The rules pull from the controlled group and affiliated service group definitions elsewhere in the Code:

Parent-subsidiary controlled groups: a parent that owns more than 50% of a subsidiary’s voting power or stock value triggers aggregation across both entities
Brother-sister controlled groups: five or fewer individuals, estates, or trusts own at least 80% of each entity, with more than 50% identical ownership across those entities
Affiliated service groups: a service organization and related entities that regularly perform services for it or with it, where ownership and service relationships meet the thresholds in Section 414(m)

These rules apply to partnerships and other non-corporate entities as well, using profit and capital interests instead of stock ownership. If you own or control multiple businesses, assume the IRS expects you to add their gross receipts together. Failing to aggregate is a common mistake and can lead to a wrong eligibility conclusion.

Who Actually Needs to Run the Test

Section 448’s accrual method mandate only applies to three categories of taxpayers: C corporations, partnerships with a C corporation as a partner, and tax shelters.³ Everyone else is outside the mandate to start with.

Sole proprietors and single-member LLCs taxed as disregarded entities can use the cash method regardless of revenue. S corporations generally can too, because an S corporation is not a C corporation and typically is not a tax shelter. Farming businesses of any structure are exempt from the accrual requirement under Section 448(b)(1). A qualified personal service corporation (a C corp whose principal activity is health, law, engineering, architecture, accounting, actuarial science, performing arts, or consulting, substantially performed by employee-owners) can also use the cash method without meeting the test.⁶

Even businesses that are not subject to Section 448’s mandate still care about the test, because passing it unlocks the Section 263A, 471, 460, and 163(j) simplifications described below.²

The Tax Shelter Trap

Tax shelters are barred from the cash method regardless of size. A tax shelter with $1 million in receipts still has to use the accrual method; the gross receipts test exemption does not apply to them.⁷

The definition is broader than most people expect. It reaches registered offerings (any non-C-corp enterprise whose interests have ever been offered in a registered securities offering), syndicates, and any entity meeting the tax shelter definition used for the substantial understatement penalty under Section 6662(d)(2)(C).

The syndicate category is the one that catches ordinary businesses off guard. A partnership or other non-C-corporation entity is a syndicate for a year if more than 35% of its losses that year are allocated to limited partners or limited entrepreneurs. The determination looks only at deductions and income, ignoring capital gains and losses from asset sales.⁸ A real estate partnership with passive investors could tip into syndicate status during a loss year and lose cash-method eligibility without noticing.

What Passing the Test Unlocks

Beyond cash-basis accounting, four other simplifications turn on the same gross receipts test. Any taxpayer meeting the threshold qualifies for them, even if Section 448(a) never applied to that taxpayer in the first place.²

UNICAP Exemption

Section 263A normally requires businesses that produce property or acquire goods for resale to capitalize certain indirect costs (overhead like utilities, rent, and depreciation) into the basis of that property. A small business taxpayer meeting the gross receipts test is exempt from UNICAP entirely.

Simplified Inventory Methods

Businesses that meet the test can use Section 471(c). Instead of the traditional methods with detailed cost tracking and valuation, they can treat inventory as non-incidental materials and supplies (deducting the cost when the inventory is sold or when the cost is paid, whichever is later) or follow the inventory method used in their financial statements.⁹

Business Interest Deduction

Section 163(j) caps the business interest deduction at 30% of adjusted taxable income (plus business interest income and floor plan financing interest).¹⁰ Small business taxpayers meeting the gross receipts test are exempt from the limit and can deduct all their business interest without running the calculation.

Small Construction Contract Exception

Section 460 usually requires long-term construction contracts to use the percentage-of-completion method. A contractor who meets the 448(c) test and estimates a project will finish within two years of its start date is exempt and can use the completed contract method instead, deferring all income until the project is done. For residential construction contracts that are not home construction contracts, the estimated-completion window extends to three years.¹¹

What Happens If You Fail

Failing the test forces a switch from cash to accrual, effective for the year in which the test is failed. The determination happens on the first day of that year, so there is no grace period.

The mechanics: file IRS Form 3115, Application for Change in Accounting Method, with the timely filed federal income tax return (including extensions) for the year of change. The change falls under the IRS’s automatic consent procedures, so no individual approval is required and no user fee applies. You still have to send a signed duplicate copy to the IRS National Office in Ogden, Utah, no later than the date you file the original with your return.¹²

Use the correct designated change number (DCN) on Form 3115 to identify the type of change. The DCN comes from the current annual revenue procedure governing accounting method changes. Using the wrong one can invalidate automatic consent and expose the business to penalties.

A business with inventory that fails the test also has to leave the simplified inventory methods and move to the standard accrual-based inventory methods under Section 471.⁹ That inventory change is usually reported on the same Form 3115.

The Section 481(a) Adjustment

Switching methods creates a gap: some income and expenses would otherwise be counted twice or missed entirely. The Section 481(a) adjustment bridges the two methods. It is the net difference between the balance sheet under the cash method and what it would look like under the accrual method.¹³

The main items are accounts receivable (income earned but not yet received under the cash method) and accounts payable (expenses incurred but not yet paid). Moving to accrual means recognizing those receivables as income and those payables as deductions. The net becomes the 481(a) adjustment.

A positive adjustment (taxable income goes up) is spread over four tax years starting with the year of change. A negative adjustment (taxable income goes down) is taken entirely in the year of change.¹³

The four-year spread is not guaranteed to run its course. If the business ceases operations before the spread period ends, the remaining balance accelerates into the year the business stops operating.¹⁴ Certain corporate transactions, including transfers within a consolidated group under Section 351, can also trigger acceleration.

The 481(a) adjustment is where the real financial consequence of failing the test lives. A business with substantial receivables and minimal payables can be looking at a six- or seven-figure income increase, and the four-year spread only softens the blow if the business keeps operating. Most businesses in this position bring in a tax professional to prepare the adjustment and the Form 3115.

1
Internal Revenue Service. Rev. Proc. 2025-32, 2026 Adjusted Items
2
Federal Register. Small Business Taxpayer Exceptions Under Sections 263A, 448, 460, and 471
3
Office of the Law Revision Counsel. 26 USC 448 Limitation on Use of Cash Method of Accounting
4
Internal Revenue Service. Like-Kind Exchanges – Real Estate Tax Tips
5
Internal Revenue Service. FAQs Regarding the Aggregation Rules Under Section 448(c)(2)
6
eCFR. 26 CFR 1.441-3 Taxable Year of a Personal Service Corporation
7
eCFR. 26 CFR 1.448-2 Limitation on the Use of the Cash Receipts and Disbursements Method of Accounting
8
eCFR. 26 CFR 1.448-2 Limitation on the Use of the Cash Receipts and Disbursements Method of Accounting
9
eCFR. 26 CFR 1.471-1 Need for Inventories
10
Internal Revenue Service. Questions and Answers About the Limitation on the Deduction for Business Interest Expense
11
Office of the Law Revision Counsel. 26 USC 460 Special Rules for Long-Term Contracts
12
Internal Revenue Service. Instructions for Form 3115
13
Internal Revenue Service. IRC 481(a) Adjustments for IRC 263A
14
Internal Revenue Service. IRM 4.11.6 Changes in Accounting Methods