Earnout in a Business Sale: How It Works, Typical Terms, and the Risks to a Seller

An earnout is a portion of the purchase price a buyer pays only if the business hits agreed targets after closing. In small-business deals it typically covers 10 to 25 percent of the price over one to three years, measured on revenue, gross profit, or EBITDA. Earnouts bridge a disagreement about what the business will earn going forward, and the seller carries the risk that the payment never arrives.

Sellers hear "earnout" and think of it as a delayed check. Buyers use it as a discount that only becomes a payment if their optimistic case turns out to be right. Both descriptions are accurate, which is exactly why the structure needs to be negotiated as carefully as the headline price.

What is an earnout in a business sale?

An earnout is contingent consideration. At closing you receive the fixed portion of the price, and the remainder is promised subject to the business achieving specified performance over a defined period. If the targets are met, you get paid. If they are missed, you get part of it or nothing, depending on how the formula was written.

The economic purpose is to bridge a valuation gap. You believe the business will earn $900,000 next year because the new contract ramps up. The buyer sees $650,000 of trailing earnings and refuses to pay a multiple on money that has not been earned yet. An earnout lets both of you sign: the buyer pays on $650,000 now, and pays more if your $900,000 materializes.

That framing tells you when an earnout is reasonable and when it is not. It is reasonable when there is a genuine, identifiable uncertainty, such as a recently signed contract, a new location that has not stabilized, or a product line launched six months ago. It is not reasonable when a buyer simply wants to pay less and dresses the discount as an earnout. If the disagreement is about the value of stable, historical earnings, the answer is a better valuation argument, not a contingent payment. Knowing your own defensible number, from an EBITDA or SDE multiple cross-checked against a discounted cash flow, is what lets you tell the difference at the table.

How does an earnout work?

Every earnout has five moving parts, and each one is negotiable independently.

A concrete example. A business sells for $2.4M: $2M in cash at closing, plus up to $400,000 of earnout paid over two years if revenue exceeds $3.2M annually. If revenue lands at $3.4M in year one, the seller collects that year's $200,000. If it lands at $3.0M, they collect nothing that year under an all-or-nothing formula, or a partial payment under a sliding scale. That difference between formulas is worth six figures, and it is decided in one sentence of the purchase agreement.

What percentage of a sale price is typically an earnout?

Ten to twenty-five percent is the normal band in small-business transactions, and up to about thirty percent appears in deals with unusual uncertainty. Beyond that you are no longer bridging a gap, you are accepting a materially lower price with a lottery ticket attached.

The share should scale with the uncertainty being bridged, not with how badly either party wants the deal. If 80 percent of the earnings are stable and recurring and 20 percent depends on a new contract, an earnout covering roughly that 20 percent is a fair reflection of the risk. A buyer proposing that half the price be contingent on stable, historical earnings is repricing the business, and the honest response is to negotiate the multiple instead.

What metric should an earnout be based on?

Revenue or gross profit, in most cases. Both are far harder for a buyer to influence than EBITDA, and they keep the disputes narrow.

EBITDA is the metric buyers propose and the one that produces the most litigation. The reason is simple: after closing, the buyer controls every expense line that feeds it. They can allocate corporate overhead to your business unit, book a management fee, add headcount, increase marketing, move your team onto their more expensive benefits plan, or invest in a system upgrade. Every one of those decisions may be perfectly sensible for the combined company and every one reduces your earnout. You will have no vote.

Revenue has the opposite problem in miniature: it can be hit at the cost of margin, which the buyer bears. That is a risk the buyer accepts when they agree to a revenue metric, and it is why they push back. Gross profit is often the practical compromise, since it captures both volume and pricing discipline while sitting above the overhead lines the buyer controls.

Whatever you choose, define it in the agreement with an exact formula and an example calculation. Do not write "EBITDA as customarily calculated." Write the definition, list the permitted and excluded adjustments, and attach a worked example using last year's numbers so both sides can see what the formula produces on known data.

What are the risks of an earnout for the seller?

You take on the risk of a business you no longer control. That is the whole of it, and every specific risk is a version of that sentence.

• Loss of operational control. The buyer sets strategy, pricing, staffing, and spending. Decisions that are right for them can be wrong for your target.
• Accounting discretion. Cost allocations, revenue recognition timing, and overhead charges all shift the metric without anyone acting in bad faith.
• Integration effects. If your business is merged into a larger entity, isolating "your" performance becomes an accounting exercise you will lose.
• Market conditions. A downturn, a lost anchor customer, or a supply disruption hits the target regardless of anyone's effort.
• Buyer financial distress. If the buyer runs out of money, an unsecured earnout is an unsecured claim.
• Deliberate manipulation. Rare but real. A buyer can push costs into the measurement period and revenue past it.

Practical protections exist for each. Require quarterly reporting with defined line items and audit rights. Include a covenant that the buyer will operate the business consistently with past practice during the earnout period and will not take actions with the primary purpose of reducing the payment. Cap or prohibit overhead allocations and management fees. Require the business to be kept as a separate reporting unit for the measurement period. Add an acceleration clause so the full earnout becomes payable immediately if the buyer sells the business, shuts it down, or defaults. And define a dispute mechanism, usually a named independent accounting firm with a fixed timeline.

How are earnouts taxed?

In the US, earnout payments are generally treated as additional purchase price and reported under the installment sale rules, which means the gain is recognized as payments are received rather than all at closing. Any interest component, whether stated or imputed under the applicable federal rate, is taxed as ordinary income rather than capital gain.

The trap is structuring the earnout as compensation for continued employment rather than as purchase price. If you stay on as an employee and the payments look like a performance bonus, the IRS can recharacterize them as ordinary income subject to payroll taxes, which is a substantially worse outcome than capital gain treatment. Keep your employment agreement and its compensation separate and market-rate, and keep the earnout tied to the sale of the business rather than to your continued service.

State treatment varies, and installment reporting interacts with your basis allocation across asset classes. This is a genuine case for a CPA who does transaction work, engaged before you sign the letter of intent rather than after. Modeling the after-tax proceeds of each structure is part of comparing offers, and it is worth doing alongside a clear view of your own valuation methods so you know what you are trading away. If cash timing is what worries you, a tighter grip on how money moves out of the business during the measurement period is one of the few levers you still have.

Should I accept an earnout?

Accept one when there is a real, nameable uncertainty that an earnout resolves, when the contingent portion is a share of the price you could genuinely afford to lose, and when you retain enough influence or protection that the metric reflects the business rather than the buyer's choices.

Push back when the earnout is being used to price stable historical earnings, when it exceeds roughly thirty percent of the price, when the metric is EBITDA with no protective covenants, when the period runs past three years, or when the formula is all-or-nothing at a single threshold. Any of those, on its own, is worth trading the earnout away for a lower fixed price. A guaranteed $2.1M frequently beats $2.0M plus a $500,000 earnout you have a coin-flip chance of collecting, and it always beats it on a risk-adjusted basis.

The alternatives are worth naming, because sellers forget they exist. A straightforward price cut removes all uncertainty. Seller financing shifts the risk to the buyer's ability to pay rather than to the business's performance, and it comes with a lien and interest. A holdback in escrow, typically for representations and warranties rather than performance, sits in a third-party account instead of depending on the buyer's balance sheet. Ask which of these the buyer would accept before assuming an earnout is the only way to close the gap.

How long should an earnout period be?

One to two years is the seller-friendly range, and three years is the practical outer limit. The longer the period, the more the result reflects the buyer's decisions rather than the business you built and the harder it becomes to argue that any shortfall was not your responsibility.

Short periods have a real cost too: a single bad quarter has more weight in a twelve-month measurement than in a thirty-six-month one. The usual compromise is annual measurement with annual payment over two years, so each year stands alone and one weak stretch does not erase the entire contingent amount.

What should be in the earnout clause?

At minimum: the exact metric definition with a worked example, the measurement periods and payment dates, the threshold, the sliding scale and the cap, the operating covenants that constrain the buyer, reporting obligations and your audit rights, treatment of add-on acquisitions or new lines of business during the period, an acceleration trigger on sale or default, the dispute resolution mechanism with a named firm and a timeline, and how the payment obligation is secured.

Security is the item sellers most often skip and most often regret. An unsecured earnout is a promise from an entity whose finances you will no longer see. Ask for a security interest in the business assets, a parent guarantee if the buyer is a subsidiary, or an escrow funded at closing. If a buyer refuses every form of security, that tells you something about how they expect to fund the payment.

Next steps

Before you evaluate any offer with an earnout in it, establish what the business is worth on its own terms. Run your normalized earnings through an earnings multiple, cross-check against a revenue multiple and a cash-flow view, and look at the range. The business valuation calculator does all three in a few minutes and shows the drivers behind the number.

With that range in hand, the earnout conversation gets much simpler. You can see whether the fixed portion alone is a fair price for the business as it exists today, and treat the contingent portion as what it actually is: a bet on the growth story, priced accordingly. If you are earlier in the process, what multiple your business sells for and valuing a business for sale are the right places to start.