Guide · Updated
The Seller's P&L Doesn't Match the Tax Return: What It Means
You have the broker's CIM and the seller's Form 1120-S open side by side, and the numbers don't agree. Revenue is higher in the CIM, profit is a lot higher, and the broker says it's "just accounting." Sometimes it is. Here is how to tell which kind of gap you are looking at, and how much it matters for the price you can pay.
Which number counts
An SBA lender underwrites to the filed tax returns and checks them against IRS transcripts. The CIM and the QuickBooks P&L are the seller's story; the return is what the seller swore to. Add-backs can lift the return's earnings, but each one needs proof. So the useful question is never "which number is right?" but "how much of the CIM's number can I prove from the return?"
Common causes, from harmless to deal-breaking
| Cause | Severity | What's going on and what to ask for |
|---|---|---|
| Different periods | Usually fine | The CIM shows trailing twelve months; the return is a calendar or fiscal year. Ask for the TTM P&L and the matching monthly detail. |
| Cash vs. accrual | Usually fine | The books run on accrual, the return on cash (or the reverse). Receivables and payables at year-end explain the gap. It should reverse the following year. |
| Reclassified lines | Usually fine | Labor or depreciation sits in cost of goods sold on one and operating expenses on the other. Individual lines differ, net income does not. |
| Year-end accountant entries | Needs proof | The CPA posts depreciation, accruals or inventory adjustments to the return that never made it back into QuickBooks. Ask for the CPA's adjusting entries. |
| Inventory adjustments | Needs proof | A physical count or write-down changes cost of goods sold on the return only. Large or recurring write-downs say something about the business. |
| Owner expenses in the business | Needs proof | Personal cars, travel or family payroll lower taxable income. These become add-backs, but only with receipts and a ledger trail. |
| Revenue the return doesn't show | Red flag | "The real numbers are higher, the owner takes cash." No SBA lender credits income that was never reported, and you would be buying the seller's tax problem. |
| Gap with no explanation | Red flag | The broker can't say why the numbers differ, or the story changes when you ask twice. Stop before the LOI. |
How big a gap is normal
Compare line by line, not just the bottom line. A rule of thumb that matches how our Tab 1 grades each line:
- Within 0.5%: ties. Move on.
- 0.5% to 2.5%: review. Usually timing or rounding; one question to the broker clears it.
- Above 2.5%: flag. Get a specific explanation and the document that proves it before you sign an LOI.
Profit gaps are always bigger in percentage terms than revenue gaps, because profit is a small number. A 3% revenue gap on a business with a 12% margin can be a 25% profit gap.
A worked example
In our fictional sample deal, the CIM shows revenue of $8,420,000 against $8,195,300 on the 1120-S, a 2.7% gap. Net income is $1,095,000 in the CIM against ordinary business income of $932,830 on the return, a 17.4% gap. Both are flags. The broker's adjusted EBITDA is $1,690,000; rebuilt from the return with only documented add-backs it is $1,425,330. At the asking multiple, that difference is worth about $1,114,142 of purchase price, which is why the gap is worth an evening of your time.
The step-by-step method for this comparison, line by line on the 1120-S, is in how to reconcile a broker CIM with the seller's 1120-S.
What to send the broker
- The monthly P&L for the same period the return covers, so the periods match.
- The CPA's year-end adjusting entries, which explain most book-to-return gaps.
- The general ledger detail for every line you flagged.
- Twelve months of bank statements, so you can check deposits against reported revenue.
- The prior year's return, to see whether timing differences reverse the way the seller says.
What it does to your price
Whatever earnings you cannot prove from the return, a lender will not finance. Run the proven figure, not the broker's, through the SBA acquisition loan calculator to see what you can actually pay, and the DSCR calculator to see whether the asking price still clears 1.25x.
Frequently asked questions
Is it normal for a P&L not to match the tax return?
A small gap is normal. Timing (cash vs. accrual), different periods and year-end accountant entries mean the books and the return rarely tie to the dollar. What is not normal is a gap nobody can explain, or one that always makes the business look better in the CIM.
How big a difference between the P&L and the tax return is too big?
As a rule of thumb, a line within 0.5% ties, 0.5% to 2.5% deserves a question, and anything above 2.5% needs a specific, documented explanation before an LOI. Searchers commonly treat a 10% gap in revenue or profit as a stop sign unless it is fully explained by timing.
Which number does an SBA lender use, the P&L or the tax return?
The tax return. SBA lenders underwrite to the filed returns and verify them with the IRS using Form 4506-C. Add-backs can raise the figure, but only with documentation; revenue the return does not show is not credited.
The seller says they made more in cash than the return shows. What should I do?
Treat it as a reason to walk away, or at least to value the business only on reported income. A lender will not finance unreported income, and paying for it means paying for earnings you cannot prove and may not keep.
What documents resolve a mismatch?
The monthly P&L for the same period as the return, the CPA's year-end adjusting entries, the general ledger for the lines that differ, bank statements for a proof of cash, and the prior year's return to see whether timing gaps reverse.