Earn-outs explained: getting paid for your business's future performance

What an earn-out is, why buyers use them, where they go wrong, and the protections to ask for before you agree to one.

You agree a headline price for your business, then discover that a large chunk of it depends on how the business performs after you’ve sold it. That’s an earn-out, and it’s one of the most common features of UK business sales. Handled well, it can bridge a gap and get you a higher overall price. Handled badly, it’s one of the most common sources of post-sale disputes.

What an earn-out is

An earn-out is part of the sale price that’s paid later, and only if the business hits agreed targets after completion. A typical deal might look like this:

An upfront payment at completion
One or more earn-out payments over the following one to three years, each linked to performance in that period

The targets are usually based on revenue, gross profit or adjusted profit (often EBITDA), though they can also be linked to things like keeping key customers or launching a product.

Why buyers use them

Earn-outs usually appear when buyer and seller don’t agree on value. You believe the business will keep growing; the buyer isn’t sure. An earn-out lets you be paid for that growth only if it actually happens.

Buyers also like earn-outs because they:

share risk with the seller if the business underperforms
keep the seller involved during the handover, protecting relationships with customers and staff
reduce the cash the buyer needs at completion

Where earn-outs go wrong

Once you’ve sold, you no longer control the business, but your earn-out still depends on how it performs. Common problems include:

Changes to how profit is calculated. New group charges, different accounting policies or cost allocations can reduce the profit your earn-out is measured on.
Integration decisions. The buyer may merge teams, move customers into other parts of the group, change pricing or cut investment, all of which can hit your numbers.
Your own role changing. If you leave or are removed from the business, you may lose the ability to influence the results.
Vague drafting. Loose definitions in the sale agreement are the most common cause of earn-out disputes.

How to protect yourself

If an earn-out is part of the deal, your adviser should negotiate protections such as:

Precise definitions. Spell out exactly how the target is calculated, which accounting policies apply, and which costs can and can’t be charged.
Operating commitments. The buyer agrees to run the business broadly as before during the earn-out period, without moving customers, cutting key resources or making changes designed to reduce results.
Information rights. You receive regular financial information so you can track performance and spot problems early.
Acceleration. If the buyer sells the business, merges it into another, or removes you without good reason, the earn-out is paid in full or at an agreed level.
Sliding scales, not cliffs. Payments that rise gradually with performance are fairer than an all-or-nothing target that’s missed by a fraction.
Catch-up provisions. A shortfall in one year can be made up in a later year.
A dispute process. An independent accountant decides disagreements about the numbers, which is faster and cheaper than going to court.

The tax angle

Earn-outs can be taxed in different ways depending on how they’re structured, and the timing of the tax doesn’t always match when you receive the money. If an earn-out is linked to you continuing to work in the business, there’s also a risk that some of it is treated as employment income, taxed at higher rates than capital gains.

This is an area where structure matters a great deal, so take specialist tax advice before agreeing the terms, not after. With the Budget due on 28 October 2026, check whether any changes affect your position.

How to judge an offer with an earn-out

When comparing offers, look past the headline price:

How much is guaranteed at completion? That’s the money you can count on.
How realistic are the targets? Ask whether the business would hit them comfortably based on its recent track record, not its best year.
How much control will you have? If you won’t be able to influence the results, treat the earn-out as uncertain.
What protections are in place? An earn-out with strong protections is worth more than the same amount with none.

A lower headline price with more paid upfront can be worth more than a higher price that depends heavily on an earn-out.

Exit Index provides general information, not financial, legal or tax advice. Speak to a qualified adviser about your own circumstances.