Accrual vs Cash-Basis Accounting: US GAAP and IRS Rules 2026

Last verified: 2026-07-29

A US client’s bank statement shows $15,000 came in last month. Their profit and loss report says the business earned $18,000. Neither number is wrong. Accrual vs cash-basis accounting is the reason the two disagree, and it is the first thing an offshore bookkeeper has to understand before touching a US client’s books. Cash-basis accounting records money when it moves. Accrual accounting records it when it is earned or owed. US GAAP allows only one of them, and the US tax code allows both, which is why the same business can run on two different bases at the same time.

In India, the rule is simple and one-directional. Section 128(1) of the Companies Act, 2013 says a company’s books must be kept on accrual and double entry. There is no choice. Most Indian accountants therefore learn accrual as the default and treat cash basis as something small proprietors do.

The US flips that habit. A small US business often keeps its tax return on cash basis and its management accounts on accrual. Both are legal. Both are common. The bookkeeper is the person who has to keep the two straight, and clients rarely know which one they are on.

This article sets out how accrual vs cash-basis accounting work in practice, why US GAAP requires accrual, when the IRS allows cash, what the same month looks like under each basis, and how to switch.

The short version: US GAAP requires accrual accounting, so any business that needs GAAP financial statements (SEC registrants, most bank borrowers, most companies raising outside money) must record revenue when it is earned and expenses when they are incurred. For tax, the IRS is more relaxed. Under IRC Section 448, C corporations, partnerships with a C corporation partner, and tax shelters must use accrual, but any of them can still use cash if average annual gross receipts over the prior three years stay under $32,000,000 for tax years beginning in 2026. Section 448 does not reach sole proprietors or S corporations at all, so most of them are free to use cash whatever their size. Changing from one method to the other means filing Form 3115, and a catch-up adjustment that increases income is normally spread over four years.

Everything below assumes you are the preparer, not the owner. You do not pick the method. You read it off the file, post to it correctly, and tell the client when it has to change.

How accrual vs cash-basis accounting differ

Accrual vs cash-basis accounting differ on one point only: the date a transaction hits the books. Everything else follows from that. IRS Publication 538 defines the cash method as one where “you generally report income in the tax year you receive it, and deduct expenses in the tax year in which you pay the expenses.” It defines the accrual method as one where “you generally report income in the tax year you earn it, regardless of when payment is received.”

So a $10,000 invoice raised on 20 March and paid on 25 April is March revenue on accrual books and April revenue on cash books. The work is identical. Only the recording date moves.

That single difference creates four account types that exist on accrual books and simply do not exist on a pure cash ledger:

1. Accounts receivable. Work billed but not yet collected.
2. Accounts payable. Costs incurred but not yet paid.
3. Deferred revenue. Cash collected before the work is done. It is a liability, not income.
4. Prepaid expenses. Cash paid for a benefit the business has not yet used. It is an asset, not an expense.

A cash-basis balance sheet has none of those four. That is the fastest way to identify which basis a file is on. Open the balance sheet. If accounts receivable and accounts payable are blank while the business clearly invoices customers, the books are on cash.

Two more tests confirm it. On accrual books, unpaid customer invoices show in income; on cash books they do not appear until money lands. On accrual books, an unpaid supplier bill shows as an expense; on cash books it stays invisible until the payment clears.

This is also the answer to the question clients ask most: why the profit and loss does not match the bank balance. On accrual books it never will, because revenue is recorded before the cash arrives and expenses are recorded before they are paid. The gap between profit and cash is the working capital sitting in receivables, payables and deferrals.

Why US GAAP requires accrual

US GAAP requires accrual because its whole purpose is to show what happened in a period, not what was banked in it. The Financial Accounting Standards Board states the point directly in Concepts Statement No. 8, Chapter 1, paragraph OB17: “Accrual accounting depicts the effects of transactions, and other events and circumstances on a reporting entity’s economic resources and claims in the periods in which those effects occur, even if the resulting cash receipts and payments occur in a different period.”

The practical form of that rule today is ASC 606, the revenue standard. ASC 606 replaced a patchwork of industry-specific and transaction-specific revenue rules with one five-step model: identify the contract, identify the performance obligations in it, determine the transaction price, allocate that price across the obligations, and recognise revenue when (or as) each obligation is satisfied. It took effect for public business entities in annual periods beginning after 15 December 2017, and for everyone else a year later, so 2018 and 2019 in practice for calendar-year companies. Nothing in those five steps mentions payment. Revenue follows delivery, not collection. The wider US GAAP framework is built on that assumption throughout.

Expenses follow the same logic in reverse. Costs are matched to the revenue they helped produce, in the period that revenue is recognised. That is why a 12-month software subscription is spread across 12 months instead of being expensed on the day it is paid.

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Cash-basis statements are not GAAP statements, and US auditors do not treat them as a lesser version of GAAP. Under AICPA standard AU-C 800 they are a special purpose framework, the term that replaced the older label OCBOA (other comprehensive basis of accounting). AU-C 800.16 requires the auditor to evaluate whether such statements are suitably titled, include a summary of significant accounting policies, and adequately describe how the framework differs from US GAAP. So a cash-basis statement is not called a balance sheet. It is called a “statement of assets and liabilities arising from cash transactions” or similar, precisely so no reader mistakes it for GAAP.

That naming rule matters for anyone preparing US books. If a client asks for GAAP financials, cash-basis output will not pass, no matter how neatly it is presented. Accrual concepts are also examined heavily in the FAR section of the CPA exam, which is a reasonable signal of how central they are to US practice.

When the IRS allows the cash method

The IRS allows the cash method for most businesses, and bars it for a specific list. Section 448(a) of the Internal Revenue Code says that “in the case of a (1) C corporation, (2) partnership which has a C corporation as a partner, or (3) tax shelter, taxable income shall not be computed under the cash receipts and disbursements method of accounting.”

Section 448(b) then carves three exceptions back out: farming businesses, qualified personal service corporations, which Section 448(d)(2) defines as corporations where substantially all activity is the performance of services in health, law, engineering, architecture, accounting, actuarial science, performing arts or consulting, and entities that meet the gross receipts test.

The gross receipts test is the one that matters for almost every small client. Section 448(c)(1) sets the statutory base at $25,000,000 of average annual gross receipts over the three tax years preceding the current one, indexed for inflation. The IRS republishes the indexed figure every year. Revenue Procedure 2025-32, at section 4.30, sets it for the current year: “For taxable years beginning in 2026, a corporation or partnership meets the gross receipts test of section 448(c) for any taxable year if the average annual gross receipts of such entity for the 3-taxable-year period ending with the taxable year which precedes such taxable year does not exceed $32,000,000.”

One trap if you check this yourself. Publication 538 still prints a $26 million figure, because the IRS does not reissue the publication every time the number is indexed. The annual revenue procedure is the authority on the current amount, not the publication. Always read the threshold off the revenue procedure for the year you are working on.

Read that last row carefully, because it is the one people get wrong. The $32,000,000 line only bites on entities Section 448(a) actually names. A sole proprietor or an S corporation is not listed in Section 448(a) at all, so size alone does not push either of them onto accrual.

One old rule of thumb is now wrong and still gets repeated. “If the client holds inventory, they must use accrual” was true before the Tax Cuts and Jobs Act. Section 471(c) now exempts a taxpayer that meets the same gross receipts test and is not a tax shelter from Section 471 entirely. That taxpayer may either treat inventory as non-incidental materials and supplies, or follow whatever inventory method its applicable financial statement uses (or its own books and records if it has no applicable financial statement). A small e-commerce client with stock can sit on cash basis for tax.

Here is the part that trips up new preparers, so state it plainly to yourself before you touch a file. GAAP and tax are two separate questions with two separate answers. A company can keep GAAP accrual books for its lender and file a cash-basis tax return in the same year. That is not an error and it is not aggressive. The difference between the two is tracked as a book-to-tax reconciliation, and on a corporate return it appears on Schedule M-1 or M-3.

Accrual vs cash-basis accounting on one month of numbers

Accrual vs cash-basis accounting produce different profit for the same month, and the cleanest way to see it is to run one month both ways. Take a small US marketing agency in March 2026. Six things happened.

1. Invoiced $18,000 on 10 March for work finished in March. The client pays on 22 April.
2. Received $6,000 on 5 March as a retainer covering April and May work.
3. Collected $9,000 on 12 March against a February invoice for February work.
4. Received a $2,400 contractor bill on 28 March for March work. Pays it on 9 April.
5. Paid $12,000 on 1 March for a software subscription running March 2026 to February 2027.
6. Paid $7,000 of March salaries on 31 March.

Under cash basis, only items 2, 3, 5 and 6 count, because only those involved money moving in March.

Under accrual, the picture changes completely. The $18,000 invoice is March revenue because the work was done in March. The $6,000 retainer is not revenue at all yet; it is deferred revenue, a liability. The $9,000 collected was February’s revenue and was already recorded then, so in March it only reduces accounts receivable. The $2,400 contractor bill is a March expense even though it is unpaid. And only one month of the $12,000 software cost, $1,000, belongs to March; the other $11,000 sits on the balance sheet as a prepaid asset.

The same month is a $4,000 loss on cash and a $7,600 profit on accrual. That is an $11,600 swing on a business with $18,000 of monthly revenue, and it is the number that decides whether a lender says yes.

The bridge between them is worth memorising, because you will be asked to explain it:

Note what item 5 does for tax. The subscription runs 1 March 2026 to 28 February 2027. Publication 538’s 12-month rule lets a taxpayer skip capitalising a prepayment where the benefit does not extend beyond the earlier of 12 months after it begins, or the end of the tax year following the year of payment. This payment clears both tests, so a cash-method taxpayer may deduct the full $12,000 in 2026 for tax while the books still spread it at $1,000 a month. Same payment, two treatments, both correct.

Month-end entries that convert a cash ledger to accrual

Converting a cash ledger to accrual at month end is a fixed list of entries, and running the same list every month is what keeps a US client’s accrual books honest. Using the March figures above, five entries do the whole job.

1. Record revenue earned but not yet collected.

Dr  Accounts receivable        18,000
    Cr  Service revenue                18,000

2. Record costs incurred but not yet paid.

Dr  Contractor expense          2,400
    Cr  Accounts payable                2,400

3. Move cash received in advance out of revenue.

Dr  Service revenue             6,000
    Cr  Deferred revenue                6,000

4. Move the unused portion of a prepayment to an asset.

Dr  Prepaid expenses           11,000
    Cr  Software expense               11,000

5. Take a prior-period collection out of this month’s revenue.

Dr  Service revenue             9,000
    Cr  Accounts receivable             9,000

Entry 5 assumes two things, and both are worth checking before you post it. It assumes the February invoice was already recorded as a receivable in February, and it assumes the March bank receipt was posted straight to revenue. If either is untrue, fix the underlying posting instead of adding this entry, or accounts receivable will go negative.

Entries 1 and 2 reverse or clear as the cash arrives and the bills are paid. Entry 4 releases at $1,000 a month for the next 11 months. Entry 3 releases as April and May work is delivered.

Two more accruals belong on the same monthly list even though they did not arise in this example. Accrue salaries and wages earned in the month but paid in the next one. Accrue interest on any loan for the days that have run, not the days billed. Both are standard month-end close work in bookkeeping for US small businesses.

QuickBooks Online behaves in a way that confuses people here, so it is worth knowing before a client asks. QuickBooks lets you flip the same report between cash and accrual with a setting on the report itself. It does not post a journal entry when you do that. It re-filters which transactions appear, which is why the totals change while the register shows no new entry. Unpaid invoices and unpaid bills appear on the accrual view and vanish from the cash view.

That toggle also produces two accounts nobody deliberately created: unapplied cash payment income and unapplied cash bill payment expense. They appear on cash-basis reports when a payment has not been matched to an invoice or a bill. They are not errors in themselves, but they are a signal to go and apply the open payments before issuing anything to a client.

One warning about the toggle. It gives a usable cash view of accrual books. It does not turn cash-basis books into accrual books, because the accruals were never recorded in the first place. If accounts receivable and accounts payable are empty, flipping the switch changes nothing meaningful. The five entries above are what actually does the conversion.

Switching methods with Form 3115

Switching accounting methods for US tax means filing Form 3115, the Application for Change in Accounting Method. A business cannot just start recording differently in January. The change has to be requested, and the effect of every prior year has to be caught up in one calculation.

A switch becomes compulsory only when a business sits inside Section 448(a) and has run out of exceptions. The usual triggers are a C corporation whose average annual gross receipts cross the $32,000,000 line for 2026, a C corporation joining an existing partnership as a partner, and a corporation that stops qualifying as a personal service corporation.

None of those three forces accrual on its own. Check the gross receipts test first in every case, because passing it keeps the cash method available even for a C corporation. And remember that Section 448 never reaches sole proprietors or S corporations, so a large sole proprietor is not pushed onto accrual by size.

A switch is also often elective in the other direction. A growing company that once had to use accrual may drop under the threshold and choose to move to cash to defer tax. The overall change to the cash method for a small business taxpayer runs under section 15.17 of Revenue Procedure 2022-14, with the qualification test at section 15.17(5)(a).

Form 3115 comes in two flavours and the difference is money. Automatic changes are listed in the revenue procedure, and per the IRS instructions “no user fee is required for a Form 3115 filed under the automatic change procedures.” Non-automatic changes need advance consent and carry a user fee, which the IRS resets every year in its first revenue procedure of the year. The current Form 3115 instructions point to Revenue Procedure 2023-1, so check that year’s replacement before quoting a client any figure. Most method changes a small business will ever make are on the automatic list.

The part clients care about is the Section 481(a) adjustment, which is the catch-up. It totals every item that would otherwise be counted twice or missed entirely because of the switch. Moving from cash to accrual, that usually means picking up the receivables that were never taxed, net of the payables that were never deducted.

The timing rules on that adjustment are fixed and worth quoting to a client before they agree to anything. A negative adjustment (one that reduces income) is taken in a single year, the year of change. A positive adjustment (one that increases income) is normally spread over four tax years: the year of change plus the following three. If the business is under examination, a positive adjustment can be compressed to two years.

There is one useful election. A taxpayer with a positive Section 481(a) adjustment of less than $50,000 may elect to take the whole thing in one year, under section 7.03(3)(c) of Revenue Procedure 2015-13. Whether that is a good idea depends on the client’s marginal rate now against the next three years, which is a conversation for their US tax preparer, not the bookkeeper.

Accrual vs cash-basis accounting in India and the US

Accrual vs cash-basis accounting sit in almost opposite places in Indian and US practice, and an Indian-trained accountant has to consciously unlearn the Indian default. In India, company books are fixed and tax has a choice. In the US, a small company’s tax return often runs on cash while the books it shows a lender run on accrual.

On the Indian side, Section 128(1) of the Companies Act, 2013 requires every company to keep books that give a true and fair view, and states that such books “shall be kept on accrual basis and according to the double entry system of accounting.” A company maintaining cash-basis or single-entry books is in contravention. There is no size threshold and no election.

Tax is where India allows the choice, and the section number changed this year. The Income-tax Act, 2025 replaced the Income-tax Act, 1961 with effect from 1 April 2026, so anyone still quoting Section 145 is quoting a repealed Act. Section 276(1) of the new Act is the live provision, and it carries the old rule forward unchanged: income under “Profits and gains of business or profession” and “Income from other sources” is computed under either the cash or mercantile system regularly employed by the assessee. Mercantile is the Indian term for accrual.

Section 276(2) lets the Central Government notify standards, exactly as Section 145(2) did. The 10 Income Computation and Disclosure Standards notified from AY 2017-18 continue to apply, and they bind only assessees who keep accounts on the mercantile system. An assessee on the cash system does not apply ICDS at all.

So the mental model an Indian accountant carries into a US engagement is: books are always accrual, tax may vary. The US model for a small client is closer to: tax is often cash, books are whatever the person reading them demands. Neither is more correct. They are different systems, and the error is applying one country’s assumption to the other country’s file.

Three habits are worth changing early. First, stop assuming a US client’s books are accrual because they are a company; entity type does not decide the basis in the US the way it does in India. Second, stop treating cash basis as unprofessional; for a US sole proprietor it is the normal, legal and often optimal choice. Third, get used to two sets of numbers for one year, because the book-to-tax difference is routine rather than a red flag.

The terminology shifts too. US GAAP is codified in the FASB Accounting Standards Codification and organised by ASC topic number, where Ind AS runs on separate numbered standards. LawSikho’s guide to moving from Ind AS to US GAAP in practice covers the specific line items that behave differently, and iPleaders sets out the practical steps of an Ind AS to US GAAP transition for finance teams doing it for the first time.

Getting this distinction right is a real filter in hiring. A candidate who can look at a trial balance and say which basis it is on, then list the entries needed to move it, is doing work a US firm will pay for. It is one of the first things tested in practice on a first US remote bookkeeping job, and it is a reasonable reason to build the skill deliberately rather than picking it up by accident. Indian accountants who learn the framework properly find it changes the kind of client they can serve, which is the point of learning US GAAP in the first place.

Frequently asked questions

Why doesn’t the profit and loss match the bank balance? On accrual books it never will. Revenue is recorded when it is earned, which is usually before the customer pays, and expenses are recorded when they are incurred, which is usually before the supplier is paid. The difference between reported profit and cash in the bank is sitting in accounts receivable, accounts payable, deferred revenue and prepaid expenses.

Can a business use accrual for its books and cash for its tax return? Yes, and many US small businesses do. GAAP and the Internal Revenue Code are separate systems with separate rules. The difference between book income and taxable income is reconciled on Schedule M-1 or M-3 of the corporate return.

Does holding inventory force a business onto accrual accounting? No, not since the Tax Cuts and Jobs Act. Section 471(c) exempts a taxpayer that meets the gross receipts test and is not a tax shelter from Section 471. That taxpayer can treat inventory as non-incidental materials and supplies, or follow the method in its applicable financial statement.

What is modified cash basis accounting? Modified cash basis is cash accounting with some accrual elements added, most often fixed assets that are capitalised and depreciated rather than expensed on payment. It is still a special purpose framework under AU-C 800 and it is still not GAAP. AU-C 800 requires modifications of the cash basis to have substantial support.

What is the hybrid method? The hybrid method, permitted for tax, uses accrual for purchases and sales of inventory and cash for everything else. It is one of the specific changes listed in the automatic change procedures, so moving to it still requires Form 3115.

Is Form 3115 needed to switch in both directions? Yes. A change from cash to accrual and a change from accrual to cash are both changes in overall method of accounting, and both need Form 3115. Most are automatic changes with no user fee.

What happens to accounts receivable when a business switches from cash to accrual? Receivables that were never taxed under the cash method get picked up in the Section 481(a) adjustment, net of payables that were never deducted. If the net figure increases income, it is normally spread over four years, or one year by election if it is under $50,000.

Can cash-basis financial statements be audited? Yes. A US auditor can audit statements prepared under a special purpose framework, following AU-C 800. The statements must be titled so they are not mistaken for GAAP statements, must include a summary of significant accounting policies, and must describe how the framework differs from US GAAP.

Which basis do US lenders and investors ask for? Accrual, in almost every case, because it shows performance for a period rather than cash timing. Any business planning to borrow, raise outside money, or sell should be on accrual books well before the conversation starts, since converting during due diligence is slow and looks bad.

What should a bookkeeper check first on a new US client file? Open the balance sheet and look for accounts receivable, accounts payable, deferred revenue and prepaid expenses. If a business that clearly invoices customers has none of them, the books are on cash. Then check the last filed tax return for the method used there, because the two can legitimately differ.

References

• IRS Publication 538, Accounting Periods and Methods
• 26 U.S. Code Section 448, Limitation on use of cash method of accounting
• IRS Revenue Procedure 2025-32 (2026 inflation-adjusted amounts, section 4.30)
• Instructions for Form 3115, Application for Change in Accounting Method
• FASB Concepts Statement No. 8, Chapter 1
• AICPA, Frequent questions about special purpose frameworks
• The Tax Adviser, Highlights of the final small business taxpayer regulations
• The Tax Adviser, New accounting method change procedures issued for small business taxpayers
• Section 128, Companies Act, 2013
• Income-tax Act, 2025: objective and scope of the new Act, Income Tax Department, India (Section 276, method of accounting, in force from 1 April 2026)
• Income Computation and Disclosure Standards, Income Tax Department, India
• Intuit QuickBooks, Unapplied cash bill payment expense on a profit and loss report

This article is for informational and educational purposes only. It does not constitute professional, financial, legal, or tax advice. Tax thresholds and accounting standards change. Consult a qualified US tax professional or CPA before acting on any accounting method decision.