Business Tax Preparation · Analysis of financial records

Method of accounting and changes (e.g., accrual, cash, hybrid, Form 3115)

The Code does not ask which method a business should use. It asks which method it does use, and makes changing it a formal proceeding. That inversion — the method is a fact about the books before it is a choice — explains almost everything here, including the rule that a taxpayer on a wrong method may not simply start being right.

The rule

The method follows the books. taxable income is computed under the method of accounting on the basis of which the taxpayer regularly computes income in keeping its books; where no method has been regularly used, or the method used does not clearly reflect income, the computation is made under such method as in the opinion of the Secretary does clearly reflect it (IRC § 446(a), (b))^TY2026Verified 2026-08-21IRC § 446(a), (b), read at law.cornell.edu/uscode/text/26/446 (IRC § 446(a) and (b)). The permissible menu is short: the permissible methods are the cash receipts and disbursements method, an accrual method, any other method permitted by chapter 1, or any combination of them permitted under regulations (IRC § 446(c))^TY2026Verified 2026-08-21IRC § 446(c), read at law.cornell.edu/uscode/text/26/446 (IRC § 446(c)), and a taxpayer with more than one business may differ between them — a taxpayer engaged in more than one trade or business may, in computing taxable income, use a different method of accounting for each trade or business (IRC § 446(d))^TY2026Verified 2026-08-21IRC § 446(d), read at law.cornell.edu/uscode/text/26/446 (IRC § 446(d)). A combination of the cash and an accrual method, permitted by § 446(c)(4), is what “hybrid” means.

Who may not use cash. a C corporation, a partnership having a C corporation as a partner, and a tax shelter may not compute taxable income under the cash receipts and disbursements method — subject to exceptions for a farming business, a qualified personal service corporation, and an entity meeting the gross receipts test (IRC § 448(a), (b))^TY2026Verified 2026-08-21IRC § 448(a), (b), read at law.cornell.edu/uscode/text/26/448 (IRC § 448(a)). Three exceptions relieve almost everyone: a farming business (§ 448(b)(1)), a qualified personal service corporation, and the gross receipts test.

Qualified personal service corporation. Two tests, both of which must be met. the function test is met where substantially all the corporation’s activities involve performing services in health, law, engineering including surveying and mapping, architecture, accounting, actuarial science, performing arts or consulting — substantially all meaning 95 percent or more of employee time, activities incident to the services counting toward it^TY2026Verified 2026-08-21Reg. § 1.448-1T(e)(4)(i), opened at law.cornell.edu/cfr/text/26/1.448-1T; statutory list at IRC § 448(d)(2)(A), opened at law.cornell.edu/uscode/text/26/448 (Reg. § 1.448-1T(e)(4)(i)). And the ownership test is met where at all times during the year substantially all the stock by value is held by employees performing the services, retired employees who performed them, their estates, or a person who acquired the stock on such a death — that last only for the 2-year period beginning on the death^TY2026Verified 2026-08-21Reg. § 1.448-1T(e)(5)(i), opened at law.cornell.edu/cfr/text/26/1.448-1T; IRC § 448(d)(2)(B), opened at law.cornell.edu/uscode/text/26/448 (Reg. § 1.448-1T(e)(5)(i)). The consequence: a qualified personal service corporation is outside the cash method prohibition altogether and is treated as an individual in deciding whether a partnership having it as a partner is caught^TY2026Verified 2026-08-21IRC § 448(b)(2), opened at law.cornell.edu/uscode/text/26/448 (IRC § 448(b)(2)).

The gross receipts test. $32,000,000 — a corporation or partnership meets the gross receipts test for a taxable year beginning in 2026 if its average annual gross receipts for the 3-taxable-year period ending with the preceding taxable year do not exceed that amount. The figure for taxable years beginning in 2025 was $31,000,000, and the unindexed statutory base in IRC § 448(c)(1) is $25,000,000^TY2026Verified 2026-08-21Rev. Proc. 2025-32 § 3.30, read at irs.gov/pub/irs-drop/rp-25-32.pdf; 2025 figure from Rev. Proc. 2024-40 § 3.31, read at irs.gov/pub/irs-drop/rp-24-40.pdf; statutory base at IRC § 448(c)(1), read at law.cornell.edu/uscode/text/26/448 (IRC § 448(c)(1); Rev. Proc. 2025-32 § 3.30). The mechanics matter as much as the figure: all persons treated as a single employer under IRC § 52(a) or (b) or § 414(m) or (o) are treated as one person for the test; an entity not in existence for the whole 3-year period applies it over the period it existed; gross receipts for a taxable year of less than 12 months are annualised; gross receipts are reduced by returns and allowances; and a reference to an entity includes any predecessor (IRC § 448(c)(2), (3))^TY2026Verified 2026-08-21IRC § 448(c)(2), (3), read at law.cornell.edu/uscode/text/26/448 (IRC § 448(c)(2) and (3)). Meeting the test also carries two further reliefs — a taxpayer other than a prohibited tax shelter that meets the IRC § 448(c) gross receipts test is exempt from the inventory requirement, and its inventory method does not fail to clearly reflect income if it either treats inventory as non-incidental materials and supplies or conforms to the method reflected in its applicable financial statement, or in its books and records prepared under its accounting procedures where it has no such statement (IRC § 471(c))^TY2026Verified 2026-08-21IRC § 471(c), read at law.cornell.edu/uscode/text/26/471 (IRC § 471(c)) and {fig:method.small_263A} (IRC § 263A(i)).

Accrual timing, both sides. On the income side the all events test now has a ceiling: for an accrual taxpayer with an applicable financial statement, the all events test for an item of gross income is not treated as met any later than when the item is taken into account as revenue in that statement^TY2026Verified 2026-08-21IRC § 451(b)(1)(A), opened at law.cornell.edu/uscode/text/26/451 (IRC § 451(b)(1)(A)), and advance payments have their own rule — an accrual taxpayer receiving an advance payment includes it in the year of receipt, unless it elects deferral for that category — in which case it includes the portion required by the financial statement rule and the remainder in the following taxable year, and no later^TY2026Verified 2026-08-21IRC § 451(c)(1), opened at law.cornell.edu/uscode/text/26/451 (IRC § 451(c)(1)). On the deduction side it has a floor: the all events test is not treated as met any earlier than when economic performance occurs. Where the liability arises out of services or property provided to the taxpayer, economic performance occurs as they are provided; where it requires the taxpayer to provide property or services, as the taxpayer provides them; and where it requires a payment under a workers compensation act or arising out of a tort, as the payments are made (IRC § 461(h)(1), (2))^TY2026Verified 2026-08-21IRC § 461(h)(1), (2), read at law.cornell.edu/uscode/text/26/461 (IRC § 461(h)), relaxed by the recurring item exception — an item may be treated as incurred before economic performance where the all events test is otherwise met, economic performance occurs within the shorter of a reasonable period after the close of the year or 8½ months after it, the item is recurring and consistently treated that way, and either the item is not material or accruing it earlier produces a more proper match against income — the treatment on financial statements being taken into account (IRC § 461(h)(3))^TY2026Verified 2026-08-21IRC § 461(h)(3), read at law.cornell.edu/uscode/text/26/461 (IRC § 461(h)(3)).

Cash does not mean “deduct when paid”. an amount paid to create a right or benefit need not be capitalised where the benefit does not extend beyond the earlier of 12 months after the taxpayer first realises it or the end of the taxable year following the year of payment — so a longer-lived prepayment is capitalised and recovered over the period it covers^TY2026Verified 2026-08-21Reg. § 1.263(a)-4(f)(1), opened at law.cornell.edu/cfr/text/26/1.263(a)-4 (Reg. § 1.263(a)-4(f)(1)). A cash method taxpayer prepaying a benefit that runs beyond the 12-month window capitalises it as surely as an accrual taxpayer would.

What counts as a change. a change in method of accounting is a change in the overall plan of accounting for gross income or deductions, or a change in the treatment of any material item within that plan — a material item being any item involving the proper time for its inclusion in income or the taking of a deduction^TY2026Verified 2026-08-21Reg. § 1.446-1(e)(2)(ii)(a), opened at law.cornell.edu/cfr/text/26/1.446-1 (Reg. § 1.446-1(e)(2)(ii)(a)). And what does not: not a change in method — correcting a mathematical or posting error, correcting an error in computing tax liability, adjusting an item that does not involve the proper time for inclusion or deduction, adjusting an addition to a bad debt reserve, and a change in treatment resulting from a change in underlying facts^TY2026Verified 2026-08-21Reg. § 1.446-1(e)(2)(ii)(b), opened at law.cornell.edu/cfr/text/26/1.446-1 (Reg. § 1.446-1(e)(2)(ii)(b)).

Consent is required either way. a taxpayer who changes the method of accounting on which it regularly computes income in keeping its books must secure the consent of the Secretary before computing taxable income under the new method; the absence of that consent is not taken into account to prevent or reduce any penalty or addition to tax where no request was filed (IRC § 446(e), (f))^TY2026Verified 2026-08-21IRC § 446(e), (f), read at law.cornell.edu/uscode/text/26/446 (IRC § 446(e)), and the regulation removes the obvious escape: consent must be secured whether or not the new method is proper or is permitted by the Code or the regulations — so a taxpayer on an impermissible method may not simply start doing it correctly^TY2026Verified 2026-08-21Reg. § 1.446-1(e)(2)(i), opened at law.cornell.edu/cfr/text/26/1.446-1 (Reg. § 1.446-1(e)(2)(i)). The procedure: consent is generally secured by filing Form 3115 during the taxable year in which the change is desired, furnishing all information requested including every class of item that will be treated differently, any amounts that will be duplicated or omitted, and the taxpayer’s computation of the adjustments needed to prevent that^TY2026Verified 2026-08-21Reg. § 1.446-1(e)(3)(i), opened at law.cornell.edu/cfr/text/26/1.446-1 (Reg. § 1.446-1(e)(3)(i)), with a price — permission to change is not granted unless the taxpayer agrees to the Commissioner’s prescribed terms and conditions, including the year or years in which the adjustment preventing duplication or omission is taken into account^TY2026Verified 2026-08-21Reg. § 1.446-1(e)(3)(i), opened at law.cornell.edu/cfr/text/26/1.446-1. Most changes now travel a published route: the Commissioner may prescribe administrative procedures under which taxpayers are permitted to change method — the automatic consent route, which substitutes published conditions for a case-by-case ruling^TY2026Verified 2026-08-21Reg. § 1.446-1(e)(3)(ii), opened at law.cornell.edu/cfr/text/26/1.446-1 (Reg. § 1.446-1(e)(3)(ii)). A first return is free: a taxpayer filing its first return may adopt any permissible method without consent, and may adopt a separate permissible method for each separate and distinct trade or business the income of which is reported for the first time^TY2026Verified 2026-08-21Reg. § 1.446-1(e)(1), opened at law.cornell.edu/cfr/text/26/1.446-1 (Reg. § 1.446-1(e)(1)).

And the change carries its history. in the year of a change of accounting method there must be taken into account those adjustments determined to be necessary solely by reason of the change, in order to prevent amounts from being duplicated or omitted (IRC § 481(a))^TY2026Verified 2026-08-21IRC § 481(a), read at law.cornell.edu/uscode/text/26/481 (IRC § 481(a)).

Current figures

How it works in practice

Establish the method before arguing about it. A method is adopted by treating an item consistently, not by intention. The regulation allows that a method may exist without a pattern of consistent treatment but says that in most instances one is not established without it. Two years of the same treatment is the working threshold, and one year of a wrong treatment is usually an error for an amended return rather than a method for a Form 3115.

Run the gross receipts test on the right three years. The statute averages the three taxable years ending with the year that precedes the year in question — a calendar-year business testing 2026 averages 2023, 2024 and 2025, and the current year is irrelevant. Two adjustments apply before the average: short years are annualised, and receipts are reduced by returns and allowances. Aggregation under IRC § 52 and § 414 comes first, and is where related entities are most often caught by surprise.

The gross receipts test does more than one job. Passing it lifts the § 448(a) cash prohibition, exempts the taxpayer from the inventory requirement of § 471(a), and exempts it from the uniform capitalisation rules of § 263A. One computation, three consequences — and a different, unindexed receipts figure governs the small taxpayer safe harbour under the repair regulations, which is a common source of confusion.

Distinguish an error from a method with one question: is this about timing? A material item involves when an amount is included or deducted. Deducting a personal expense as a business expense is not a timing question and never becomes a method however often it is repeated. Depreciating an asset over the wrong recovery period is, and becomes a method after two years — which is why the fix for the first is an amended return and for the second a Form 3115.

Expect the section 481(a) adjustment to be the real cost. It sweeps up the entire cumulative difference the old method created, computed as of the beginning of the year of change, so that nothing is duplicated or omitted. A negative adjustment — one reducing income — is generally taken entirely in the year of change; a positive one is generally spread. Which way it runs, and over how long, is a term the Commissioner imposes, and Reg. § 1.446-1(e)(3)(i) makes agreement to those terms a condition of permission.

Do not confuse consent with correctness. A taxpayer on an impermissible method has two problems: the method is wrong, and abandoning it without consent is a second violation. The practical effect is usually favourable, because a taxpayer changing with consent under the automatic procedures generally receives audit protection for earlier years that a self-help correction would not carry.

Scenarios

Traps

How this has changed

The single largest change is the 2017 rewrite of the small business thresholds. Before it, the § 448(c) ceiling was a fifth of its current level and was not indexed at all; the inventory rules of § 471 and the uniform capitalisation rules of § 263A had separate and lower thresholds of their own. Pub. L. 115-97 raised the § 448(c) figure sharply, indexed it from a 2017 base under § 448(c)(4), and then wrote that single test into § 471(c) and § 263A(i) so that one computation now controls all three. Indexation has carried the figure upward in steps, rounded to the nearest million each year, which is why the number a candidate memorised two years ago is wrong now.

The income side moved at the same time. IRC § 451(b) put a ceiling on deferral for accrual taxpayers with applicable financial statements, and § 451(c) codified the one-year deferral for advance payments that had previously rested on Rev. Proc. 2004-34. Both first applied for taxable years beginning after 31 December 2017.

The change procedure has moved the opposite way, toward standardisation. What Reg. § 1.446-1(e)(3)(i) describes as the general rule — a Form 3115 filed during the year of change and a case-by-case grant — is now the minority route. Most changes travel the automatic consent procedures issued under Reg. § 1.446-1(e)(3)(ii), where the conditions, the section 481(a) spread and the audit protection are published in advance and the application is filed with the return.

Nothing in the post-2024 legislation alters the definition of a method or the consent requirement.

Exam focus

The gross receipts figure is the single most likely computational question in this topic, and it changes every year. Know the current amount, know that the average runs over the three years ending with the preceding year, and know the three mechanical adjustments: aggregation of related entities, annualisation of short years, and reduction for returns and allowances.

Know the three exceptions to the § 448(a) prohibition and state the two qualified personal service corporation tests separately. The employee-time percentage attaches to the function test through the regulation’s definition of “substantially all”; the ownership test uses the same standard but must be met continuously.

Be able to place an item on the correct side of the change-in-method line. Ask whether the issue is timing. If it is not, it is not a method, and Reg. § 1.446-1(e)(2)(ii)(b) lists the exclusions.

For the procedure, remember three things: consent is needed whether or not the old method was permissible, Form 3115 is the vehicle, and the section 481(a) adjustment prevents duplication and omission by sweeping up the whole cumulative difference.

Finally, keep the cash method’s limits in view. It governs timing of receipt and payment, not capitalisation, and Reg. § 1.263(a)-4(f) applies to cash method taxpayers on exactly the same terms.

Check yourself

1. A calendar-year partnership with a C corporation partner had gross receipts of $30,000,000, $33,000,000 and $31,000,000 in 2023, 2024 and 2025, and expects $28,000,000 in 2026. May it use the cash method for 2026?

Answer: Yes — and the trap is the year you are tempted to use. The test averages the three taxable years ending with the year preceding 2026, so 2023 through 2025, giving $31,333,333. That is inside the 2026 threshold, so the partnership meets the gross receipts test and escapes the § 448(a)(2) prohibition. The 2026 expectation of $28,000,000 never enters the 2026 computation, and a preparer who averaged 2024 through 2026 would reach $30,666,667 — the right side of the line for the wrong reason, which fails as soon as the figures move the other way.

2. A corporation’s employees spend 96 percent of their time practising architecture. Its stock is held 70 percent by architect-employees and 30 percent by the widow of a founder who died four years ago. Is it a qualified personal service corporation?

Answer: No. The function test is met — architecture is a listed field and 96 percent clears the threshold in Reg. § 1.448-1T(e)(4)(i). The ownership test fails: a person who acquired stock by reason of the death of a service-performing employee counts only for the 2-year period beginning on the date of death, and four years have passed, so the 30 percent no longer qualifies. Substantially all the stock is therefore not in qualifying hands.

3. A business has for three years expensed shop supplies when purchased rather than when consumed. It now wishes to switch to consuming. Error or method change?

Answer: A method change. The issue is the proper time for taking a deduction, which Reg. § 1.446-1(e)(2)(ii)(a) makes a material item, and three years of consistent treatment establishes the method. The switch requires the Commissioner’s consent on Form 3115 and produces a section 481(a) adjustment for the supplies on hand at the beginning of the year of change — the amount that would otherwise be deducted twice, once when bought under the old method and again when consumed under the new one.

4. An accrual taxpayer with an applicable financial statement books a fee as revenue in year one but contends it is not due until year two. When is it income?

Answer: Year one. IRC § 451(b)(1)(A) provides that the all events test is not treated as met any later than when the item is taken into account as revenue in the applicable financial statement, so booking it as revenue in year one fixes the outer limit. The taxpayer’s argument would have worked before the provision applied, and it is why the financial statement is now a document with direct tax consequences rather than a comparison point.

5. Why does a taxpayer usually prefer to change method under the automatic procedures rather than correcting a wrong method on its own?

Answer: Because Reg. § 1.446-1(e)(2)(i) requires consent whether or not the old method was proper, so self-correction is itself an unauthorised change. Beyond that, the automatic procedures published under Reg. § 1.446-1(e)(3)(ii) set the terms in advance — the section 481(a) spread and, in most cases, audit protection for the years before the change. A taxpayer that simply starts reporting correctly gets neither, and remains exposed on the earlier years it was trying to put right.