# Cash Basis Accounting for Small Business, Explained

- Author: CheapBankConvert (https://cheapbankconvert.com)
- Published: 2026-10-17
- Category: Bookkeeping on a shoestring
- Canonical: https://cheapbankconvert.com/blog/cash-basis-accounting-for-small-business

> Cash basis accounting for small business: why your bank statement is the record, who can use it, and where it differs from accrual.
Cash basis accounting for a small business records income when the money arrives and expenses when you pay them. Because the timing follows the money, your bank statement is close to a finished record. Most sole proprietors and many small companies may use it, while accrual instead records income when earned and costs when incurred.

## What is cash basis accounting for a small business?

Cash basis accounting is a method that records a sale on the day the customer's money reaches you and an expense on the day you pay it. An unpaid invoice is not income yet, and a bill you have not paid is not an expense yet. The record only moves when cash moves.

The IRS describes the same rule for tax purposes. [IRS Publication 538, on accounting periods and methods](https://www.irs.gov/publications/p538), says that under the cash method you report income in the tax year you receive it and deduct expenses in the tax year you pay them. Your bookkeeping method and your tax method are usually the same choice for a small business, which keeps life simple.

Two details stop the definition from being too literal:

- **Received does not always mean deposited.** Publication 538 explains constructive receipt: income counts as received when it is credited to your account or made available to you without restriction. A payment you could collect but choose not to still counts.
- **Paid does not always mean deductible that year.** Some prepaid costs have to be spread over the period they cover, which the edge cases section below explains.

Cash basis is not the same thing as single entry bookkeeping, though the two often travel together. Cash basis is about when you record. Single entry is about how many places each transaction is written down. [Single entry bookkeeping from your bank statement](/blog/single-entry-bookkeeping) covers the second idea.

## Why a bank statement works as the cash basis record

A bank statement works as the cash basis record because it lists every amount that came in and went out, on the date it happened, with a balance that proves nothing is missing. Under cash basis, that is almost exactly what the books need. Your job is to add a category to each row and keep the receipts.

Compare that with accrual. Accrual books need a list of invoices sent but not paid, and bills received but not settled. None of that is on a statement. Under cash basis, the statement already has the timing right for nearly every row.

To use a statement as the record, you need its rows in a spreadsheet. The usual layout has date, description, amount, category and a note. Each month:

1. Bring in the rows from every account the business uses, including cards.
2. Tag each row with a category, or as a transfer if money only moved between your own accounts.
3. Check that the month's rows add up to the change in the closing balance.
4. Total by category for the month.

Card accounts need their own statements. Purchases on a business card belong in the books when you record the card's rows, and the payment from checking to the card is a transfer, not a second expense. Counting both doubles your costs. Many card issuers offer only PDF statements, and some card apps have their own export route. [Convert an Apple Card statement to Excel for free](/blog/convert-apple-card-statement-to-excel) walks through one such card, from the Wallet export to the PDF.

## Who can use cash basis accounting under IRS rules?

Most sole proprietors and S corporations, and many partnerships, can use cash basis accounting. Corporations other than S corporations generally cannot, unless they pass a gross receipts test. That test, in IRS Publication 538, allows average annual gross receipts of $26 million or less over the three prior tax years, indexed for inflation.

For a one-person business, the ceiling is far away. The practical questions are elsewhere:

- **Inventory.** Publication 538 lets a qualifying small business taxpayer choose not to keep an inventory, using the same gross receipts test, though it must still use a method that clearly reflects income. If you resell goods, ask a preparer how that applies to you.
- **Your first return.** [IRS Publication 583](https://www.irs.gov/publications/p583) notes that you choose your accounting method when you file your first income tax return. Make that choice on purpose rather than by default, since your books and returns follow it from then on.
- **Tax shelters.** The gross receipts exceptions do not apply to a business classed as a tax shelter, which is rare for the businesses reading this.

If you are unsure whether you qualify, the deciding facts are your entity type, whether you hold inventory, and your gross receipts. A preparer can answer it in a few minutes with those three facts in hand.

## Cash basis versus accrual on the same three invoices

Cash basis and accrual report the same total over time, but they can put income in different years. The gap shows up around year end, when invoices are sent in one year and paid in the next. The worked example below runs one set of invoices and bills through both methods.

Imagine a consultant with a calendar tax year. All names and amounts are examples.

| Item (example) | Date issued | Date paid | Cash basis year | Accrual year |
| --- | --- | --- | --- | --- |
| Invoice A, $3,000 | Nov 20 | Dec 15 | This year | This year |
| Invoice B, $4,500 | Dec 10 | Jan 8 | Next year | This year |
| Invoice C, $2,000 | Dec 28 | Feb 2 | Next year | This year |
| Software bill, $600 | Dec 1 | Dec 1 | This year | This year |
| Contractor bill, $1,200 | Dec 20 | Jan 10 | Next year | This year |

Under cash basis, this year shows $3,000 of income and $600 of expenses, a profit of $2,400. Under accrual, this year shows $9,500 of income and $1,800 of expenses, a profit of $7,700. Next year, cash basis picks up the remaining $6,500 of income and $1,200 of costs, while accrual has already counted them.

Neither result is wrong. They answer different questions. Cash basis tells you what came in and went out. Accrual tells you what you earned and owed. For a small business with steady work, the two are close. For one with large invoices landing near year end, they can be far apart in a single year.

## Cash basis edge cases: card purchases, prepaid bills and uncashed checks

Cash basis edge cases are rows where the statement date and the moment of payment do not line up neatly. Three come up often for small businesses: purchases on a card, bills paid a year or more in advance, and checks that sit uncashed across a month or year end. Each needs a deliberate rule in your books.

**Card purchases.** A card charge and the later payment of the card are two rows on two statements. Record the expense once, from the card statement, and tag the checking account payment as a transfer. Which tax year a December charge paid in January belongs to is a question to settle with your preparer once, then apply every year.

**Prepaid bills.** Paying a year of insurance or a two-year software licence up front raises the question of whether the whole amount is deductible now. Publication 538 describes a 12-month rule: you need not capitalize amounts for benefits that do not extend beyond the earlier of 12 months after the benefit begins or the end of the following tax year. Payments for longer benefits generally have to be spread.

**Uncashed checks.** A check you mailed on December 28 may not clear your account until January. A check a client handed you in December may not be deposited until January. Your statement shows the January date in both cases. Note the real date in the note column, and agree with your preparer which date to use, because constructive receipt can count income before it reaches the bank.

Keep a short list of these exceptions on a tab in the workbook. Ten lines of notes save a long conversation at tax time.

## When cash basis accounting misleads you about profit

Cash basis accounting misleads you about profit when money and work fall in different months. A quarter with large payments for old work looks profitable, and the next quarter, with all the work and none of the cash, looks like a loss. The books are accurate about cash, but they are a poor guide to how the business is doing.

You can correct for this without switching methods. Keep two small lists beside your cash basis books:

- **Invoices sent and not yet paid**, with the amount and the date due.
- **Bills received and not yet paid**, with the amount and the date due.

Adding the first and subtracting the second from your cash profit gives a rough accrual view whenever you need one, such as when pricing a new contract or applying for a loan.

Cash basis also hides slow payers. If a client takes ninety days to pay, the income lands late and nothing on the statement tells you why. The unpaid invoice list is what shows it.

For most tiny businesses, cash basis kept from bank statements remains the cheapest workable system. [The cheapest way to do bookkeeping for a small business](/blog/cheapest-way-to-do-bookkeeping) ranks it against software and paid help by money and hours. If your statements arrive as PDFs, CheapBankConvert, in early access now, turns each one into rows with a balance column at a one-time price per statement. The [CheapBankConvert homepage](/) lists those early prices.