Bookkeeping · Foundations · Guide · Working level
Accrual vs. cash basis: what each shows, what each hides
Cash-basis books record money when it moves; accrual books record income when earned and expenses when incurred. Here is what each basis reveals and conceals, who is allowed to use cash, the hybrid most small businesses actually run, and the entries that convert one to the other.
Cash-basis bookkeeping records a transaction when money moves. Accrual-basis bookkeeping records it when the economic event happens — revenue when you earn it, expenses when you incur them — whether or not cash has changed hands. The gap between the two is exactly the stuff that lives on a balance sheet: receivables, payables, prepaid expenses, unearned revenue.
Neither basis is "more honest." Each answers a different question. Cash answers what happened to the money; accrual answers how the business performed. Trouble starts when you read one basis expecting the other's answer.
What each basis shows — and hides
The same December, two ways. A consultant invoices 20,000 in December for work performed, collects 8,000 of it before year-end, receives (but does not pay) a 3,000 subcontractor bill, and prepays 2,400 of January–June insurance.
| Item | Cash basis | Accrual basis |
|---|---|---|
| Revenue | 8,000 | 20,000 |
| Subcontractor expense | 0 | 3,000 |
| Insurance expense | 2,400 | 400 (one month) |
| December profit | 5,600 | 16,600 |
Worked example above; the 11,000 gap reverses in later periods as cash catches up.
Cash basis hides the 12,000 customers still owe and the 3,000 the consultant owes — obligations that are real but invisible. Accrual basis hides the fact that only 8,000 actually arrived; a business can show handsome accrual profit while missing payroll. Over the whole life of the business the two converge; in any one period they can diverge wildly, and the divergence is largest in businesses that are growing, seasonal, or slow to collect.
This is also why revenue, income, and cash are three different words: accrual books make the distinction explicit; cash books collapse it.
Who may use cash basis
For tax purposes, the cash method is broadly available to small businesses. Under Section 448(c), a business qualifies if its average annual gross receipts for the prior three years fall under an inflation-indexed threshold — set at $25 million by the TCJA and indexed since, sitting around $30 million in recent years. Qualifying businesses may also treat inventory as non-incidental materials and supplies rather than adopting full accrual. C corporations and partnerships with C-corporation partners above the threshold must use accrual, as must tax shelters regardless of size. Publication 538 is the IRS's plain statement of the rules.
Two practical notes:
- The method is sticky. Once adopted, your tax accounting method generally cannot change without IRS consent, requested on Form 3115. Changing methods triggers a Section 481(a) adjustment that catches up the cumulative difference.
- Books and tax can differ. Nothing requires your management books to match your tax method. Accrual books, cash return is a common and legitimate pairing — the preparer converts at year-end.
The hybrid most small businesses actually run
Walk into a typical small business's ledger and you will find neither pure basis. The bank feed drives cash-like recording of expenses, while invoicing modules create accounts receivable the moment an invoice is sent — accrual behavior. Payroll accrues liabilities automatically. Nobody accrues the utility bill. The result is a de facto hybrid: accrual for revenue and payroll, cash for most operating expenses.
That hybrid is fine for management as long as you know which accounts are on which convention. It becomes a problem when someone reads the profit and loss as if it were pure one or the other — or when the tax preparer is not told which side of the line each account sits on. Most ledger software will toggle reports between "cash" and "accrual" views, but the toggle only converts what the software knows about (open invoices and bills); manually entered accruals and prepaid schedules do not un-convert themselves.
Converting cash books to accrual
Conversion is a set of adjusting entries at the period end. Each one has the same logic: put the economic event in the right period.
1. Record what customers owe you
| Account | Debit | Credit |
|---|---|---|
| Accounts receivable | 12,000 | |
| Service revenue | 12,000 |
Revenue earned in December, collectible in January. Reverses as payments arrive.
2. Record what you owe vendors
| Account | Debit | Credit |
|---|---|---|
| Subcontractor expense | 3,000 | |
| Accounts payable | 3,000 |
3. Spread prepaid expenses
| Account | Debit | Credit |
|---|---|---|
| Prepaid insurance | 2,000 | |
| Insurance expense | 2,000 |
Of the 2,400 paid, 2,000 belongs to next year. Each month going forward: debit Insurance expense 400, credit Prepaid insurance 400.
4. Defer revenue you have not earned
| Account | Debit | Credit |
|---|---|---|
| Service revenue | 5,000 | |
| Unearned revenue | 5,000 |
Cash received in December for January work is a liability — you owe the work — not revenue.
5. Accrue wages earned but unpaid
| Account | Debit | Credit |
|---|---|---|
| Wages expense | 4,200 | |
| Accrued payroll | 4,200 |
Days worked in December, paid in the first January payroll.
Watch the accrued payroll account absorb and release the liability:
Accrued payroll
| Debit | Credit |
|---|---|
| Jan 5 payroll pays it out4,200 | Dec 31 accrual4,200 |
A liability account: credited when the obligation is recorded, debited when it is settled. It should return to zero after the January payroll.
Converting accrual to cash is the same entries in reverse: strip receivables and payables out, collapse prepaid and unearned balances into the periods cash actually moved. Many bookkeepers make the accrual entries dated the last day of the year and set them to auto-reverse on the first day of the next, keeping the daily books simple.
What your tax preparer needs to know
The year-end handoff fails most often on method confusion. Give your preparer:
The year-end method memo — five items.
| Item | Why it matters |
|---|---|
| Which basis the books are on (really — account by account if hybrid) | The preparer must know what to convert |
| Open receivables and payables at year-end, aged | The core cash-conversion numbers |
| Prepaid balances and their coverage periods | Deductibility timing under the 12-month rule |
| Customer deposits and unearned revenue | Cash-basis taxpayers may owe tax on these on receipt |
| Any method change you want, before year-end | Form 3115 consent has timing rules; do not spring it in March |
When each basis is the wrong choice
Cash basis fails you when you invoice on terms, carry inventory beyond trivial amounts, take deposits, or need lender-grade statements — it will misstate every period and hide obligations. Accrual fails you when the business is tiny and cash-simple: the accruals become ritual entries that cost bookkeeping time and inform no decision. And accrual profit is genuinely dangerous when collections are weak; a business has never once paid rent with a receivable. Whichever basis you report on, keep one eye on the bank and one on the receivables aging — the two together tell the story neither basis tells alone.
What to do next
- Identify which basis (or hybrid) your books are actually on — check whether receivables and payables carry balances.
- Confirm which method your last tax return used; match this year or plan a Form 3115.
- Book the five conversion entries at year-end if you keep cash books but need accrual statements.
- Read the profit and loss alongside the receivables aging and the bank balance, every month, whichever basis you run.
Frequently asked questions
- What is the difference between cash basis and accrual basis accounting?
- Cash basis records revenue when payment is received and expenses when paid. Accrual basis records revenue when earned and expenses when incurred, regardless of when cash moves. Accrual adds accounts receivable, accounts payable, and accrued liabilities to the books, producing a truer profit picture but a weaker view of cash on hand.
- Who is allowed to use cash basis for taxes?
- Most small businesses may use the cash method. Under Section 448 as adjusted for inflation, businesses with average annual gross receipts under an inflation-indexed threshold (roughly $30 million in recent years) generally qualify, including most that carry inventory. C corporations above the threshold, and certain tax shelters, must use accrual. IRS Publication 538 covers the rules.
- Can my books be accrual but my tax return cash basis?
- Yes, and it is common. Many businesses keep accrual books for management and lenders while their preparer converts to cash basis for the return. The conversion backs out receivables, payables, and accruals at year-end. What matters is consistency: the tax method generally cannot change year to year without IRS consent on Form 3115.
- Which basis makes my business look more profitable?
- Neither, over the life of the business — total profit converges. In any single period they can differ sharply. Cash basis inflates profit when customers pay old invoices and deflates it when you prepay expenses; accrual shows the profit of work performed that period. A growing business with slow-paying customers usually shows higher accrual profit and less cash.