Earnout Structures: The Revenue-vs-EBITDA Metric Trap

An earnout is a portion of a company's sale price paid later, contingent on the business hitting agreed targets after the deal closes. It bridges a valuation gap: the seller believes in the growth story, the buyer wants proof. The single most important term in any earnout is which metric it is measured on — and here is the trap: sellers who agree to an EBITDA-based earnout hand the buyer control of the very number that decides their payout. The buyer, who now owns the company, can invest in growth, absorb costs, or restructure in ways that legitimately depress EBITDA — and legally reduce what the seller is owed. A revenue-based earnout is harder to manipulate, which is why buyers resist it and sellers should push for it.

If part of your exit is riding on an earnout, this one choice can be worth more than the headline price.

Why the metric matters more than the number

Say you sell your company for $10M up front plus a $5M earnout. Two structures:

• Revenue-based: the $5M pays if the business hits an agreed revenue target. Revenue is high in the accounting stack and hard for a new owner to suppress without hurting their own asset.
• EBITDA-based: the $5M pays if the business hits an agreed profit target. But the buyer now controls spending. New hires, marketing investment, integration costs, allocated corporate overhead — all legitimately reduce EBITDA, and all sit within the buyer's discretion.

Same headline deal, very different odds of collection.

How sellers protect themselves

• Prefer revenue or gross-profit metrics over EBITDA where possible.
• Define the metric precisely in the agreement — what's included, what's excluded, how overhead is allocated.
• Cap the buyer's discretion — cap allocable corporate costs, ring-fence discretionary spend, or require the business to be run "consistent with past practice."
• Keep operational control over the earnout period if you can, or negotiate protective covenants if you can't.
• Shorten the earnout window — the longer it runs, the more the business changes and the harder your original targets are to hit.

How buyers see it

Buyers favor EBITDA earnouts precisely because they align payment with the profit the buyer actually receives — and because they retain control of the inputs. That is not necessarily bad faith; it is leverage. Which is why the earnout metric should be negotiated with the same seriousness as the purchase price itself.

Frequently asked questions

What is an earnout in an acquisition?
A portion of the purchase price paid after closing, contingent on the business hitting agreed post-close targets.

Is a revenue or EBITDA earnout better for the seller?
Generally revenue (or gross profit), because it is harder for the new owner to manipulate. EBITDA can be legitimately reduced by buyer decisions the seller no longer controls.

How long do earnouts typically last?
Commonly one to three years. Shorter windows favor the seller because the business stays closer to the one the targets were set against.

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Heading toward a sale where part of the price is contingent? A Zenith Transaction Readiness Audit helps you understand your earnings quality and negotiating position before you're at the table — so you don't sign an earnout you can't collect. Book a Transaction Readiness Audit →