Can You Switch from Cash to Accrual? Form 3115 and IRS Consent

Yes, you can move your business from cash to accrual accounting, but the IRS has to agree first. Switching from cash to accrual accounting is treated as a change in accounting method under Section 446(e) of the Internal Revenue Code, and any change requires the Commissioner’s consent. Most businesses get that consent automatically by filing Form 3115 with their tax return. More complex situations require a formal ruling and a user fee that ranges from $3,450 to $13,225.¹

Once you file your first return using a particular method, you’re locked into it until the IRS lets you change. The reason is simple: your accounting method decides when income and deductions land on your return, so free switching would let businesses time recognition to lower taxes. Permission, not preference, controls the change.

Do You Even Have a Choice?

Some businesses can’t stay on cash accounting regardless of what they’d prefer. Section 448 of the Internal Revenue Code prohibits three types of entities from using the cash method:

C corporations
Partnerships that have a C corporation as a partner
Tax shelters

C corporations and partnerships with corporate partners keep the cash option if their average annual gross receipts for the prior three tax years stay below an inflation-adjusted threshold. For tax years beginning in 2026, that threshold is $32 million.² Tax shelters get no exception.³

Farming businesses and qualified personal service corporations are carved out from the accrual requirement entirely and can generally stay on cash.³

Automatic Consent or Non-Automatic Consent

The IRS runs two tracks for method changes, and which one you use determines your timeline, your cost, and how much scrutiny you face.

Standard cash-to-accrual switches usually qualify for automatic consent. The general framework comes from Revenue Procedure 2015-13, and the current list of changes that qualify for automatic treatment is in Revenue Procedure 2024-23.⁴ If your change is on the list and you meet the eligibility rules, you can implement the new method on your return without waiting for IRS approval. There’s no user fee.

Eligibility has limits. You generally cannot have changed the same method, or requested an overall method change, within the five tax years ending with the year the new change takes effect. Being under IRS examination can also restrict you, though exceptions apply depending on timing and the type of audit.⁵

If your change isn’t on the automatic list, or you don’t meet the eligibility rules, you go through non-automatic consent. IRS officials review whether the change accurately reflects income and doesn’t create an unfair tax result, then issue a formal ruling letter. The process takes longer, and a user fee applies.

How to File Form 3115

Both tracks use Form 3115, Application for Change in Accounting Method.⁶ The form asks for your current method, the proposed method, the tax year the change takes effect, your principal business activity code, and a history of any prior method changes.⁷

The heaviest lift on the form is the Section 481(a) adjustment. You total up accounts receivable, accounts payable, and any other items that would be counted differently under accrual, then calculate the net figure needed to prevent income from being double-counted or skipped during the transition.⁸

Watch the filing mechanics, because people get this backwards. The original Form 3115 attaches to your timely filed federal income tax return for the year of change, including extensions. A signed copy goes to the IRS National Office in Ogden, Utah, filed no earlier than the first day of the year of change and no later than when you file the return.⁹ The original travels with your return; Ogden gets the copy.⁷

The Section 481(a) Adjustment and the Four-Year Spread

When you move from cash to accrual, some income and expenses would otherwise slip through the transition. You may have earned revenue you haven’t collected, or incurred expenses you haven’t paid. The Section 481(a) adjustment catches all of it so nothing is taxed twice and nothing escapes tax entirely.¹⁰

The direction of the adjustment sets the timing:

A positive adjustment, meaning more taxable income, is spread ratably over four tax years: the year of change plus the next three.
A negative adjustment, meaning less taxable income, is taken entirely in the year of change.

The four-year spread for positive adjustments is the default rule under Revenue Procedure 2015-13. Specific changes on the automatic list may have different spread periods, so check the section that applies to your change.⁵

The dollar amount goes on your return for the year of change and carries forward on later returns as needed. Keep clean documentation of how you calculated it. This is one of the first items the IRS scrutinizes if your return is examined.

When the Spread Gets Accelerated

The four-year spread assumes the business keeps operating normally. If you cease operations before the spread period ends, the entire remaining balance of a positive 481(a) adjustment is taken into income in the year you stop doing business.¹¹ Similar acceleration can apply when a C corporation elects S corporation status during the spread period, though the specifics depend on the type of change. If you’re weighing both a method change and an entity restructuring, the sequence matters.

What Non-Automatic Consent Costs

Automatic changes carry no user fee. Non-automatic requests do, and the amount depends on your gross income under Revenue Procedure 2025-1:

$13,225 standard fee
$9,775 if gross income is under $10 million but at least $400,000
$3,450 if gross income is under $400,000

The reduced fees require a certification of your gross income level. The fee is per applicant, and if you’re also asking for a filing extension, that’s a separate fee. Keep proof of payment and any IRS correspondence in case questions come up later.

What Happens If You Switch Without Approval

Starting to use accrual without filing Form 3115 counts as an unauthorized change, and the consequences run past paperwork.

The IRS can push you back to your prior method even if the method you switched to was technically correct. The Commissioner can require the reversal starting from the year of the unauthorized switch, or from the earliest open year if that year is closed by the statute of limitations.¹¹

When the IRS imposes the method change involuntarily, you lose the four-year spread. The entire 481(a) adjustment, positive or negative, lands in a single year.¹¹ For a business with substantial receivables, that can produce a far larger tax bill than a properly planned change would have. You also give up the audit protection that comes with a filed Form 3115, so the IRS can examine your accounting method for earlier years too. Filing the form is cheaper than the alternative.

1
Office of the Law Revision Counsel. 26 USC 446 – General Rule for Methods of Accounting
2
Internal Revenue Service. Rev. Proc. 2025-32
3
Office of the Law Revision Counsel. 26 USC 448 – Limitation on Use of Cash Method of Accounting
4
Internal Revenue Service. Rev. Proc. 2024-23
5
Internal Revenue Service. Revenue Procedure 2015-13 – Changes in Accounting Periods and Methods of Accounting
6
Internal Revenue Service. About Form 3115, Application for Change in Accounting Method
7
Internal Revenue Service. Instructions for Form 3115 (12/2022)
8
eCFR. 26 CFR 1.481-1 – Adjustments in General
9
Internal Revenue Service. Where to File Form 3115
10
Office of the Law Revision Counsel. 26 USC 481 – Adjustments Required by Changes in Method of Accounting
11
Internal Revenue Service. 4.11.6 Changes in Accounting Methods