Two P&Ls for the same company and the same year can show net income $150,000 apart, and both can be correct. One is accrual basis, the other cash basis. If your request doesn't say which one you want, you'll get whichever the bookkeeper ran last.
This post explains how QuickBooks Online handles the two bases, what moves between them, which reports the setting applies to, and how to state basis in a request so there's no ambiguity.
Same books, different report
The most important thing to understand about basis in QuickBooks Online is that it's a report setting, not a property of the books.
A business enters its transactions once: invoices, bills, payments received, bills paid, journal entries. When someone runs a report, they choose accrual or cash, and QuickBooks presents those same transactions according to that choice. The company has a default report basis in its settings, which is why a cash-basis taxpayer's bookkeeper will often produce cash-basis reports without thinking about it.
So asking a seller "do you keep your books on cash or accrual?" is the wrong question for a small company on QuickBooks Online. The right question is "run this report on accrual basis." Whether the books support a meaningful accrual report is a separate question, covered below.
What changes between the two
The difference is timing. Accrual basis recognizes revenue when it's earned and expenses when they're incurred. Cash basis recognizes them when money moves.
| Transaction | Accrual basis | Cash basis |
|---|---|---|
| Invoice sent December 20, paid January 15 | Revenue in December | Revenue in January |
| Bill received November 30, paid December 28 | Expense in November | Expense in December |
| Open invoices at period end | Accounts receivable on balance sheet | Not shown as revenue or A/R |
| Unpaid bills at period end | Accounts payable on balance sheet | Not shown as expense or A/P |
A few things don't change much. Payroll paid on schedule, rent paid monthly and card transactions mostly land in the same period either way. The differences concentrate in the items that sit open across a period end.
Receivables
This is usually the biggest swing. A company with long payment terms or a few large customers can carry a lot of open invoices at any month end. On accrual basis that's revenue in the period. On cash basis it isn't revenue until it's collected. A business that's growing will typically look better on accrual, because receivables are growing too.
Payables
The mirror image. Unpaid bills reduce accrual income but not cash income. A business stretching its vendors will look better on cash basis than it really is.
Accrued expenses and journal entries
Here's where QuickBooks gets subtle. Accruals entered as journal entries (accrued wages, accrued bonuses, an accrued tax liability) in most cases show up on both bases, because QuickBooks generally treats a journal entry as posted on its date regardless of basis. Cash-basis reports in QuickBooks aren't a pure cash view if the bookkeeper posts accrual journal entries. That's one reason a cash-basis P&L won't always reconcile exactly to bank deposits.
Which reports take a basis
Not every report has a basis setting. In QuickBooks' standard reports:
| Report | Basis setting? |
|---|---|
| Profit and Loss | Yes |
| Balance Sheet | Yes |
| General Ledger | Yes |
| Trial Balance | Yes |
| Sales by Customer Summary | Yes |
| Statement of Cash Flows | No |
| A/R Aging Summary and Detail | No |
| A/P Aging Summary and Detail | No |
The aging reports list open invoices and bills as of a date, which is inherently an accrual concept, so there's nothing to switch. The cash flow statement starts from net income and adjusts for working capital changes and non-cash items, so it doesn't take a separate basis setting either.
If you ask for a "cash basis A/R aging," expect a confused reply.
Which basis to ask for
Valuation and QoE: accrual
For anything where you're measuring earnings, ask for accrual. You want revenue and expenses matched to the period they belong to. Cash-basis monthly P&Ls jump around with collection timing, and that noise lands directly in your adjusted EBITDA.
If the seller's books are kept mostly on a cash mindset, the accrual report will still be thin: few receivables, few payables, no accrued expenses. That isn't a reason to switch to cash. It's a reason to build the accrual adjustments yourself in the QoE, using the agings and the general ledger.
Proof of cash: both
A proof of cash reconciles reported revenue and expenses to bank activity. A cash-basis P&L by month is a useful starting point because it's closer to what hit the bank. Ask for it alongside the accrual P&L for the same months, plus the general ledger. The difference between the two P&Ls, month by month, largely explains itself through the changes in A/R and A/P.
Tax comparison: whatever the return uses
If you're tying the books to tax returns, ask for the basis the return was prepared on. Many small businesses file on cash basis. Comparing an accrual P&L to a cash-basis return will produce a gap that's real but uninformative.
Lending
Lenders vary. Many want accrual statements for covenant purposes, with A/R aging for borrowing-base work. If your credit policy specifies a basis, put it in the request.
How to state basis in a request
Put the basis on each line, not once at the top. Lines without one tend to get the default.
| Report | Period | Basis |
|---|---|---|
| Profit and Loss | Trailing 12 months ending September 30, 2026, by month | Accrual |
| Profit and Loss | Trailing 12 months ending September 30, 2026, by month | Cash |
| Balance Sheet | As of September 30, 2026 | Accrual |
| General Ledger | Trailing 12 months ending September 30, 2026 | Accrual |
| A/R Aging Detail | As of September 30, 2026 | (none) |
Then check the files. QuickBooks prints the basis at the bottom of the report ("Accrual Basis" or "Cash Basis" followed by the date and time it was run). If that footer is missing from an exported file, ask why.
Signs the accrual books aren't really accrual
A report run on accrual basis is only as good as the entries behind it. Watch for:
- A/R that's near zero at every month end for a business that invoices on terms.
- No A/P, but the company clearly has vendors on net 30.
- No accrued payroll at a month end that falls mid pay period.
- Large one-time "catch-up" journal entries at year end, typically from the outside accountant.
- Revenue entered as deposits rather than invoices, which makes the accrual P&L look exactly like the cash one.
None of these are disqualifying. They tell you how much accrual work the QoE will need to do.
Basis in FinShare
When you build a FinShare request, each report line carries its own basis. For the P&L, balance sheet, general ledger, trial balance and sales by customer you choose accrual or cash. For the cash flow statement and the four aging reports there's no basis to choose. The owner sees the basis on each line before they approve, so there's no question later about what was agreed. The proof of cash package includes a cash-basis monthly P&L next to the accrual one for exactly the comparison described above.
Each delivered file carries the basis in its footer, the way QuickBooks prints it, and the report is pulled with that setting straight from QuickBooks Online rather than exported by hand.