What Is an Earnout in a Business Sale?

Why buyers propose earnouts

An earnout usually shows up when a buyer and seller disagree, honestly, about what the business is worth. The seller points to strong recent growth or a big new contract and wants to be paid for it now. The buyer is not convinced that growth will continue once the seller is gone, or is wary of relying on the seller's own numbers, and does not want to pay full price for a future that has not happened yet.

Rather than walking away or forcing one side to fully accept the other's view, an earnout splits the difference: the seller gets a lower amount guaranteed at closing, plus the chance to earn the rest if the business performs as promised. From the buyer's side, this also reduces the cash needed on day one and reduces the risk of overpaying for a business that turns out to have been inflated or unusually lucky in its final year under the old owner.

Earnouts are also common when a buyer is financing the deal, since lenders often like seeing that a meaningful piece of the seller's payment depends on the business continuing to perform. It signals to the lender that the seller has confidence in the numbers and skin in the game after closing.

It is worth being honest with yourself about why an earnout is on the table. Sometimes it reflects a genuine, good-faith gap in expectations. Other times it is a buyer's way of offering an attractive headline number while quietly building in an easy way to pay less if the business does not perform, or if the buyer simply chooses not to run it the way you would have.

Typical structures: revenue-based versus profit-based

A revenue-based earnout pays the seller a percentage of revenue, or a bonus tied to hitting a revenue target, over a set period after closing. Revenue is easier to measure and harder for a buyer to manipulate through accounting choices, which is why sellers often prefer it. The tradeoff is that revenue can grow while profit does not, so a seller collecting a revenue-based earnout is exposed to the buyer running the business less efficiently, so long as the top line still shows up.

A profit-based earnout, usually tied to EBITDA or a similar profit measure, ties the payout to the number that matters most to overall business value. The problem is that profit is far more exposed to decisions the buyer makes after closing: how they allocate corporate overhead, what salary they pay themselves, whether they invest in growth that depresses short-term profit, or how they account for shared costs across multiple locations they own. A seller with no control over any of that is trusting the buyer's accounting to determine their own payout.

Earnout periods commonly run from one to three years, with one year being common for retail and service businesses and up to three years more common in larger or more complex deals. Most earnouts also include a cap, meaning there is a maximum additional amount the seller can earn no matter how well the business performs, and often a floor or minimum threshold below which nothing is paid at all.

Some earnouts use a sliding scale rather than a single all-or-nothing target, paying a proportional amount for performance between a floor and a ceiling. A sliding scale is generally better for sellers than an all-or-nothing cliff, because it does not leave the seller with nothing over missing a target by a small margin.

The metric definition problem

Most earnout disputes come down to definitions, not intentions. Revenue sounds simple until you ask whether it includes returns, discounts, a large one-time project, or revenue from a new product line the buyer launched using your old customer list. Profit is far worse: EBITDA can be calculated a dozen defensible ways depending on how overhead, management fees, and shared services get allocated.

A buyer who owns several similar businesses can, entirely without any bad intent, allocate corporate costs in a way that depresses the profit of the specific unit tied to your earnout, simply because that is how they run their books. Whether or not that is deliberate, the effect on your payout is the same.

Get the definition of the metric in writing, in detail, before you sign anything. Specify exactly what counts as revenue or profit, how shared costs are allocated if the buyer owns other locations or businesses, what happens to new products or acquisitions the buyer adds, and who calculates the number each period. Vague language here is where sellers lose money later, often without any single dishonest act on the buyer's part.

Post-closing control and why it matters so much

The single biggest risk in any earnout is that you are being paid based on results you may no longer control. Once the deal closes, the buyer typically runs the business: setting prices, staffing decisions, marketing spend, which customers to prioritize, and how much to reinvest versus take out as profit. Every one of those decisions can move your earnout number, for better or worse, and you have limited say in most of them.

This is why earnouts are riskiest in deals where the buyer plans significant changes right away, such as merging your business into an existing operation, changing pricing, cutting staff you consider essential, or shifting your customers onto their systems. Ask directly about the buyer's post-closing plans before agreeing to an earnout, and be skeptical of any earnout tied to a business that is being folded into something larger.

Some sellers negotiate a consulting or employment role during the earnout period specifically so they retain some influence over the decisions that drive their own payout. That only helps if the agreement gives you real authority over the metrics that matter, not just a title and a desk.

Protective terms worth negotiating

A handful of specific terms make the difference between an earnout that is a fair bridge and one that is a trap. Push for a clear, detailed definition of the metric, agreed in writing, with an example calculation both sides sign off on before closing. Ask for the right to review the buyer's books and records related to the calculation, ideally with an independent accountant if there is a dispute.

Negotiate covenants that require the buyer to run the business in a manner consistent with past practice during the earnout period, sometimes called a 'commercially reasonable efforts' or non-diversion clause, meaning the buyer cannot deliberately starve the business of marketing spend, redirect customers elsewhere, or make changes designed to suppress the earnout number.

Include a clear dispute resolution mechanism, such as a named independent accounting firm to resolve disagreements, rather than leaving disputes to be litigated from scratch. Also negotiate acceleration clauses, meaning if the buyer sells the business again, or if there is a change of control, during the earnout period, the full earnout becomes payable immediately rather than depending on a new owner's performance.

Finally, get everything in the purchase agreement itself, not a side letter or verbal understanding. An earnout with weak legal drafting is, in practice, an unenforceable promise dressed up as a price.

How earnouts interact with seller notes and escrow

Deals frequently combine an earnout with other deferred or contingent payment tools, and it is worth understanding how they differ. A seller note is a loan you extend to the buyer for part of the purchase price, repaid on a fixed schedule regardless of performance, sometimes secured by the business's assets. Unlike an earnout, a seller note's repayment does not depend on hitting a target, though it does depend on the buyer's ability to pay, which is its own risk.

An escrow or holdback is a portion of the purchase price set aside at closing, usually to cover potential post-closing claims like breaches of the seller's representations, rather than to measure future performance. Escrows are typically released after 12 to 18 months if no claims arise, and they are generally more predictable than earnouts because they are not tied to ongoing business results.

When a deal includes all three, an earnout, a seller note, and an escrow, look at how much of your total price is actually guaranteed versus contingent. A deal that looks like $2 million but includes only $1 million in cash at closing, with the rest split across a note that depends on the buyer staying solvent and an earnout that depends on performance you cannot control, is a very different offer than a $1.8 million deal paid mostly in cash.

When to accept an earnout, and when to walk

An earnout can make sense when it is a genuinely small piece of the total price, when the metric is simple and hard to manipulate, when you will retain meaningful influence over operations during the earnout period, and when the buyer has a track record that gives you confidence they will run the business fairly. It can also make sense as a way to bridge a real, good-faith valuation gap when you believe strongly in near-term growth you cannot yet prove on paper.

Be more cautious, or walk away, when the earnout represents a large share of your total price, when the metric is profit-based with heavy discretion left to the buyer, when the buyer plans to merge your business into an existing operation, or when the buyer has no real financial capacity to pay the earnout even if targets are hit. A buyer's promise is only as good as their ability and willingness to honor it.

As a rule of thumb, treat the guaranteed cash at closing as the real price you are selling for, and treat the earnout as a bonus you might collect, not money you can count on. If you cannot afford to walk away from the sale without the earnout portion, and the guaranteed cash alone does not meet your needs, that is a sign the deal structure does not actually work for you, regardless of the attractive headline number.