When a buyer and a seller disagree on what an online business is worth, the deal usually dies — unless they use an earn-out. An earn-out is a deal structure where part of the purchase price is paid upfront and the rest is paid later, only if the business hits specific targets after the sale. It is one of the most useful tools in small online business deals, because it lets the seller get their price if the business performs, while the buyer does not pay full price for performance that never arrives.

How an Earn-Out Actually Works

A typical small deal might be priced at one hundred thousand, with seventy thousand paid at closing and thirty thousand paid over the next twelve months if revenue or profit stays above an agreed level. The targets are written into the purchase agreement in precise terms: which metric, measured how, over what period, and paid when. Revenue targets are common because revenue is easy to measure, but profit targets are fairer to the buyer, because a seller chasing a revenue target could slash prices or overspend on advertising to hit it.

The earn-out period usually runs from six to twenty-four months. Shorter periods are simpler and less likely to cause arguments, while longer periods give the business more time to prove itself. What matters most is that the metric is one the buyer can actually control after the sale, and that the seller cannot manipulate from the outside. Get an accountant to review the wording before you sign, because a vague target is an argument waiting to happen.

Why Buyers and Sellers Both Like Them

For a buyer, an earn-out lowers the cash needed upfront and shares the risk with the seller. If the business underperforms, you pay less, and you have not bet everything on the seller's numbers being right. For a seller, an earn-out can lift the total price above what a buyer would pay in cash today, because the buyer is paying for future performance rather than past results. It also signals confidence: a seller who accepts an earn-out is saying they believe the business will keep performing.

Earn-outs are especially useful when the business depends on the seller personally — for example, a content site where the seller writes the articles, or a service business built on the seller's reputation. The earn-out gives the seller a reason to help with the transition properly, because their remaining money depends on the business doing well under the new owner. That alignment is worth more than any clause in the agreement.

The Traps to Watch For

The biggest risk is a dispute over whether the target was hit. To prevent it, define the metric exactly: which revenue counts, whether refunds are deducted, how advertising spend is treated, and who calculates the number. Agree that the buyer reports the figures monthly, with access to the underlying records, so there are no surprises at the end of the period. If the seller will still be involved during the earn-out period, spell out their role and how much time they owe you.

Also think about what happens if you want to change the business. A buyer who wants to rebrand, change pricing, or rebuild the site may find the earn-out target no longer fits the new strategy. Build in room to run the business your way, and avoid targets that punish you for making sensible changes. An earn-out done well turns a stalled negotiation into a deal both sides can accept; done badly, it turns a clean purchase into a year-long argument.