Add-backs are where most of the value in a small business deal actually moves. The revenue is usually the revenue. The argument is almost always about which expenses a buyer should ignore.
Very little of what we adjust is deliberate. It is presentation. The same economic fact, written up two different ways, either survives diligence or does not.
The most common issue we see in CIMs is a market adjustment shown as a single net line.
Officer compensation is a good example. The owner takes $250,000. Market for the role is $110,000. The CIM shows one line: Officer compensation adjustment, $140,000. On paper it gets you to post-acquisition expense quickly, and it looks clean.
It collapses under diligence, because there is nothing to tie it to. Payroll records show $250,000. The tax return shows $250,000. The P&L shows $250,000. Nothing anywhere shows $140,000, so the reviewer has to reverse-engineer the assumption before they can test it, and any period where the owner's pay changed breaks the number silently.
The cleaner approach is two lines:
Same net result. Completely different durability. The historical figure is verifiable, the assumption is visible and can be argued on its own terms, and if the owner's pay moved between periods the model stays correct.
The same logic applies to related-party rent. Add back the rent actually paid to the owner's entity, then layer in market rent as a separate assumption. We see a meaningful number of adjustments in our reports that exist only because of how the CIM combined these two steps.
Cash-basis timing is the quiet one, because nothing in it looks like an add-back at all.
Most small businesses keep their books on a cash basis, and banks underwrite off cash-basis financials, so a QoE usually starts there. That is all reasonable. The problem is that cash-basis results can move for reasons that have nothing to do with operating performance.
The clearest version is inventory. A distributor that is deliberately running down stock will show improving gross margin on a cash basis, because it is selling goods it paid for in an earlier period. Sales can be falling while margins climb. The pattern looks like a business getting more efficient. It is a business liquidating its balance sheet, and the buyer inherits the need to restock.
Deferred revenue does the same thing in the other direction, and so does a change in payment terms with a large customer.
Sellers sometimes read all of this as adversarial. It is the opposite. Clean add-backs get a higher price, because a buyer will not pay full value for a number they cannot verify.
Three things make the difference:
The add-backs that survive are not the aggressive ones or the conservative ones. They are the ones somebody can check.