What is an earnout?
If you're selling your business, there's a good chance a buyer will offer you part of the price now and part of it later, tied to how the business performs after the sale. That second part is the earnout. It's one of the most common ways deals get done, and one of the easiest places for a seller to get burned if the terms aren't right. Here's how earnouts actually work, and what to watch for.
What an earnout actually is
An earnout is a piece of your sale price that the buyer pays after closing, but only if the business hits agreed targets. Instead of handing you the full amount the day the deal closes, the buyer pays a guaranteed sum up front and holds back the rest. You earn that held-back portion over a set period, based on how the company performs.
So a deal that looks like one number on paper is really two: the cash you're certain to get, and the cash you might get. A sale described as, say, "up to $8 million" often means $6 million guaranteed at close and another $2 million available through an earnout if the business performs the way both sides hope it will. The headline number and the number you actually walk away with can be very different.
Why buyers and sellers use earnouts
Earnouts exist to solve one specific problem: the buyer and the seller can't agree on what the business is worth. The seller sees momentum, a strong pipeline, a new product about to land, and prices the business on where it's headed. The buyer sees risk and isn't willing to pay today for growth that hasn't happened yet. That gap can be hundreds of thousands of dollars, sometimes more, and plenty of deals die in it.
An earnout splits the difference instead of killing the deal. The buyer pays a price they're comfortable with based on today's results, and the seller gets a shot at the higher number if the optimistic case proves out. For the seller, it's a way to capture upside you couldn't get in straight cash. For the buyer, it ties part of the price to results actually showing up, which lowers their risk. When you understand the different types of business buyers, you'll see that some, like financial buyers and private-equity acquirers, lean on earnouts far more than others.
How earnouts are usually structured
Most earnouts come down to three decisions: what you measure, how long you measure it, and how performance turns into money.
- The metric. Usually revenue or EBITDA. Revenue earnouts are simpler to track and harder to manipulate, but they reward top-line growth even if it's unprofitable. EBITDA earnouts tie your payout to actual profit, which lines up better with what the buyer cares about, but they're far easier to move around through cost allocation and accounting choices after the sale. Some earnouts use other milestones instead, like keeping a key customer or hitting a product launch.
- The period. Commonly one to three years. Shorter is generally better for the seller: less time for the buyer's decisions to drift the numbers away from what you'd have done, and you collect sooner.
- The payout formula. Some earnouts are all-or-nothing: hit the target and you get the full amount, miss it and you get nothing. Others slide, paying a percentage based on how close you came, often with a floor and a cap. Caps matter. A capped earnout limits how much upside you can ever collect, no matter how well the business does.
| Structure choice | Tends to favor | Why |
|---|---|---|
| Revenue metric | Seller | Harder for the buyer to manipulate after close |
| EBITDA metric | Buyer | Tied to profit, but movable via cost allocation |
| Shorter period (1 yr) | Seller | Less time for the buyer's choices to shift the numbers |
| Sliding scale, no cap | Seller | Captures upside; an all-or-nothing or capped deal limits it |
Illustrative tendencies only, not legal or financial advice. The right structure depends on your business and the specific deal.
The risks an earnout puts on the seller
Here's the catch that trips owners up. The moment the deal closes, you usually don't run the business anymore. The new owner does. But your earnout still depends on how that business performs. You're betting on results you no longer fully control.
That creates two real problems. The first is decisions. A buyer might cut the marketing budget, change pricing, shift your team onto other work, or fold your company into a bigger entity. Each of those can be reasonable for them and quietly murder the metric your earnout is measured against. The second is measurement. If your earnout is based on EBITDA and the buyer starts allocating corporate overhead, shared salaries, or new expenses against your unit, your "profit" shrinks on paper even if the business is doing fine. Disputes over how the number gets calculated are one of the most common ways earnouts go sideways.
None of this means earnouts are a trap. It means the agreement has to anticipate these problems before you sign, not after.
How to protect yourself
A well-written earnout closes the gaps a vague one leaves open. The big levers:
- Define the metric precisely. Spell out exactly how revenue or EBITDA is calculated, including which costs can and can't be charged against your unit, how shared overhead is handled, and what accounting standard applies. The more specific the definition, the less room there is to argue later.
- Negotiate governance. Lock in protections over the things that drive your numbers during the earnout period: marketing spend, staffing, pricing, and the customers and contracts that matter. If you'll be staying on to run the unit, get your authority in writing.
- Add an acceleration clause. If the buyer resells the business, lets you go without cause, or makes a major change that undermines the metric, the earnout should pay out in full. This stops a buyer from sidestepping the payment by changing the rules.
- Keep the guaranteed portion large. The bigger the certain cash at close, the less rides on a contingent number you don't control. If a buyer wants a huge earnout and a small guaranteed payment, that tells you something about how confident they are, and how much risk they're handing you.
- Build in reporting and audit rights. You should be able to see the numbers your payout depends on, regularly, and verify them. Going dark for two years and hoping for a check at the end is how sellers get surprised.
When to push back
An earnout is reasonable when it's bridging a genuine difference of opinion about future growth. It's a warning sign when it's just a way to lower the price the buyer actually commits to. If the guaranteed portion is small and most of the value sits in a contingent payout you can't control, that's not a fair split of risk. Push for more cash at close, a shorter period, cleaner metrics, or stronger governance, and be willing to walk if the structure leaves you holding all the downside.
This is exactly where having an advisor in your corner pays off. An experienced M&A advisor has seen how these terms play out and knows which clauses protect you and which ones quietly don't. They also run a process with more than one buyer, and competition is the best leverage you have to get a bigger guaranteed payment and a smaller, fairer earnout. If you're early in thinking about a sale, start with the broader guide to selling your business, and get a sense of the number itself with a business valuation before you ever sit across from a buyer.
Get an advisor who'll structure the deal in your favor
The terms of an earnout matter as much as the headline price, sometimes more. The owners who do best on these deals are the ones who had a specialist negotiating the structure, not just the number. ProCloser matches you with vetted M&A advisory firms that close deals in your industry, including no-retainer, success-only options. It's free to sellers and confidential. Get matched and have someone who does this for a living make sure your earnout protects you.
Earnout FAQ
What is an earnout in a business sale?
An earnout is part of the purchase price the buyer pays after closing, but only if the business hits agreed targets over a set period. You get a guaranteed amount up front and the rest becomes contingent on future performance, usually measured against revenue or EBITDA goals. It's a way to bridge a gap when buyer and seller disagree on what the business is worth.
How do earnouts work?
The buyer and seller agree on a metric (often revenue or EBITDA), a measurement period (commonly one to three years), and a formula that turns performance into a payout. If the business reaches the targets during that window, the buyer pays the earnout, sometimes in full, sometimes on a sliding scale. The agreement defines how the metric is calculated, any caps, and who controls the business during the earnout.
Why do buyers and sellers use earnouts?
They bridge a valuation gap. The seller wants to be paid for expected growth; the buyer won't pay today for results that haven't happened. An earnout lets the buyer pay a lower guaranteed amount now and the rest later if the optimistic case proves out. Sellers use them to capture upside they couldn't get in cash at close, and to get a deal done that might otherwise stall.
What are the risks of an earnout to the seller?
The main risk is that you no longer control the business but your payout depends on how it performs. The new owner makes the decisions, and choices that are fine for them, like cutting marketing or folding your numbers into a larger entity, can shrink the metric your earnout is measured against. Disputes over how that metric is calculated are common, which is why clear definitions and governance terms matter.
How can a seller protect themselves in an earnout?
Define the metric precisely in writing, including how shared costs are allocated. Negotiate governance terms that protect the levers driving performance. Add an acceleration clause so the earnout pays in full if the buyer resells or pushes you out early. Keep the guaranteed portion as large as you reasonably can, and have an experienced M&A advisor and attorney structure the terms before you sign. Get matched with a vetted advisor, including no-retainer options.
Don't sign an earnout without an advisor in your corner.
We'll match you with a vetted M&A advisor who structures deals in your favor and a free, confidential indicative valuation to start. Free to sellers. No retainer to find out.
Tania leads ProCloser's network of vetted M&A advisory firms and works with business owners every week on valuation, deal terms, and getting matched to the right advisor to sell. Get matched free.