How Common Are Earnouts, and How Should They Be Structured? (2025 Data)

The earnout is where a clean-looking deal turns into a two-year argument. The seller wants part of the price tied to future performance because they believe in the business. The buyer agrees because it bridges a valuation gap. Then the searcher takes over operations, makes a reasonable decision the seller disagrees with, and the earnout becomes a dispute about whether you ran the business in good faith.

Here is what the 2025 data says about how earnouts are actually structured, so you can build one that pays fairly without becoming a trap.

How Often Earnouts Appear

The 2026 SRS Acquiom M&A Deal Terms Study, covering more than 2,300 private-target deals, found earnouts in 24% of 2025 non-Life-Sciences deals, and the trend is rising. So roughly one in four deals carries one. If your deal has an earnout, you are in normal territory. If a seller insists on one and it does not fit the deal, the data does not say earnouts are mandatory, only common.

Typical Size and Length

When an earnout is present, the SRS Acquiom data puts the median earnout potential at about 34% of the closing payment, with a median length of 21 months. So a typical structure ties roughly a third of the total consideration to performance over a window a little under two years.

That length matters more than buyers expect. A 21-month earnout means you are operating someone else's metric for nearly two years, and every operating decision you make can be read through the lens of whether it helped or hurt the earnout. The longer the window, the more surface area for disagreement.

The Metric Is the Whole Ballgame

Earnout disputes almost never start with the percentage. They start with the definition. Is the earnout on revenue or on earnings? Revenue earnouts are cleaner because they are harder to manipulate. Earnings-based earnouts (EBITDA) invite years of argument about which post-close costs count against the number, because the buyer controls the cost structure after close.

The SRS Acquiom data shows revenue as the most common single metric. Whichever metric your deal uses, the definition needs to be precise, with the accounting methodology spelled out, because every ambiguity becomes the seller's argument later.

The Two Protections a Searcher Must Get

Two structural terms decide whether an earnout is fair, and the 2025 data shows where the market sits on both.

Offset rights. Can you offset an indemnification claim against a future earnout payment? In SRS Acquiom's 2025 data, 65% of earnout deals expressly allowed the buyer to offset indemnity claims against earnout payments. This is a strong buyer protection: if the seller breaches a rep and also has an earnout coming, you can net the two. If your draft is silent on offset, that is a gap to close, because the data says most deals address it in the buyer's favor.

Acceleration on change of control. If you sell the business before the earnout period ends, does the earnout accelerate and pay out? Only 24% of 2025 earnout deals included that acceleration. Because earnouts themselves appear in about 24% of deals, that works out to roughly 6% of all 2025 non-Life-Sciences deals. So a seller asking for acceleration is asking for the minority position, and a buyer resisting it is on the market side of the line.

Beyond those two, watch the covenant language. Many earnout deals include a covenant about how the buyer must operate during the earnout period, ranging from a soft commercially-reasonable-efforts standard to a hard promise to run the business to maximize the earnout. The stronger that covenant, the more it constrains your operating freedom, which is the opposite of why most searchers buy a business in the first place.

What to Do With This

If your deal has an earnout, do not negotiate the percentage first. Negotiate the structure:

Pin the metric. Prefer revenue over earnings, and define it precisely with the accounting methodology attached. Get an offset right. The data says 65% of deals have one. Yours should. Push back on operating covenants that overconstrain how you run the business post-close. Keep the window as short as the seller will accept, because every month is more surface for dispute. Bring the full structure to your attorney before you agree to any of it.

Where Inkvex Fits

On a Searcher Sub or Deal Pack report, the Negotiation Points section reads the earnout against the 2025 SRS Acquiom benchmarks: it flags the metric definition, checks whether you have an offset right, notes whether change-of-control acceleration matches market, and surfaces operating covenants that constrain you more than a typical deal. The Cross-Reference Map catches where the earnout mechanics depend on accounting definitions buried elsewhere in the agreement. It is a premium first-pass that pairs with your lawyer, not a replacement for one.

This is legal information, not legal advice. Earnout structures are deal-specific and interact with the indemnification package, the working-capital adjustment, and the operating covenants. Bring this to your M&A attorney, who should complete the full review before you sign.