SRS Acquiom tracks earnout outcomes across hundreds of private-target deals. The number every business seller needs to know: when you include deals where nothing gets paid, earnouts deliver about 21 cents on the dollar. That is not a typo. That is the data from 100 deals representing $3.6 billion in earnout potential, closed since 2021.
That does not mean you should walk away from a deal that includes an earnout. It means you need to understand what you are signing before you agree to one.
What an earnout is
An earnout ties part of the sale price to how the business performs after the deal closes. Instead of receiving the full amount at the closing table, a portion is held back and paid later, if the business hits agreed targets during a defined period.
The typical earnout is 15 to 30 percent of total deal consideration, per Davis Wright Tremaine. On a $5 million sale, that is $750,000 to $1.5 million you do not see on closing day. You earn it back by hitting numbers over the next one to three years.
About one in five private-target M&A transactions includes an earnout provision. Buyers reach for this structure when they see a gap between what they believe the business is worth today and what the seller believes it will be worth after the deal.
Why buyers propose earnouts
Buyers use earnouts to transfer risk back to the seller. If the business hits its projections, the seller gets paid. If it does not, the buyer is protected.
From the buyer's position, the logic is straightforward: they saw a business with strong recent performance or ambitious growth projections. They do not want to pay a premium for claims that do not hold up. An earnout lets them say yes to the deal while leaving the seller to prove the thesis.
For sellers, earnouts can get a deal done when both sides cannot agree on current value. If you believe your business is worth $8 million and the buyer believes $6 million, an earnout on $2 million can bridge that gap without the deal falling apart.
The risk is what happens between closing and the day the earnout measurement period ends.
The three metrics that drive earnout calculations
How the earnout gets measured matters more than almost anything else in the agreement. The three most common metrics are revenue, gross income, and net operating income (NOI) or EBITDA.
Revenue is the simplest. It is a top-line number that is hard for a buyer to hide through accounting decisions. Sellers often prefer revenue as the earnout metric because it is harder to reduce through discretionary spending choices. The downside: revenue alone does not reflect profitability. A business can post strong sales and still show poor EBITDA if the buyer loads it with new overhead.
EBITDA and NOI give a better picture of how the business is actually performing. They strip out the noise and measure true operating results. The tradeoff is complexity. Once you put EBITDA in an earnout formula, every accounting definition becomes a negotiation point. Which expenses are included? How does the buyer allocate overhead? What happens when the buyer hires a new management team and charges those salaries back to the acquired business?
This is where most earnout disputes start.
Non-financial milestones are the third category. FDA approval, patent issuance, product launch. These appear most often in life sciences deals. They require exact definitions in the agreement, because vague milestone language is the single most common trigger for post-closing litigation.
What the payout data shows
SRS Acquiom's research on earnouts outside of life sciences reveals a pattern that sellers rarely anticipate:
- 59 percent of deals paid something on the earnout
- For deals that paid anything, the average recovery was about 50 cents on the dollar
- When you account for deals where nothing was paid, the effective rate falls to 21 cents on the dollar
- 28 percent of earnouts were contested
- Of the 59 percent that paid something, 17 percent required renegotiation to avoid litigation
For lower-middle-market deals with an upfront value under $50 million, achievement rates run even lower than the overall average.
This data is not an argument against accepting an earnout. It is an argument for negotiating the protective provisions as hard as you negotiate the purchase price.
What you are actually negotiating
Sellers often focus too much on the earnout target and too little on the operational controls that determine whether hitting that target is even possible.
Once you close, the buyer runs the business. You do not. The buyer controls headcount, marketing spend, pricing, customer priorities, capital allocation, and accounting policies. Every one of those decisions affects your earnout calculation. The buyer does not have to act in bad faith to undercut your numbers. They simply have to run the business differently than you did.
Three provisions are worth fighting for in earnout negotiations:
An operating covenant requires the buyer to run the business in the ordinary course, consistent with historical practices, through the earnout period. This gives you legal recourse if the buyer changes strategy in ways that undercut your numbers after closing.
Separate books requirements give you clean measurement. If the acquired business gets integrated into the buyer's larger operation within the first year, tracking standalone performance becomes nearly impossible. Push for a requirement that the buyer maintain separate financial records for the duration of the earnout period.
An acceleration clause protects you if circumstances change. If the buyer sells the business during the earnout period, or materially breaches the operating covenant, the full remaining earnout amount becomes payable immediately.
None of these provisions guarantee payment. They give you the contractual basis to enforce your rights if the buyer does not follow through on what they agreed to.
Dispute resolution: negotiate the process before you need it
Earnouts are among the most litigated provisions in M&A transactions. Part of what you are negotiating is the dispute resolution process itself, not just the performance targets.
The standard framework: the buyer delivers its earnout calculation within 60 to 90 days after each measurement period ends. The seller gets 30 to 60 days to review the calculation and the underlying books. If the seller disagrees, they deliver a written objection. The parties negotiate for 30 days. If no agreement is reached, a neutral accounting firm serves as final arbiter, limited to the items in dispute. Costs are typically split based on how each party's position fared.
A clear dispute process does not prevent disagreements. It contains them. Sellers who negotiate this language upfront avoid the situation where the buyer simply ignores the earnout deadline and dares them to litigate.
How to think about an earnout offer
If a buyer proposes an earnout, the first question is not whether to accept it. The first question is what percentage of the total deal value is contingent. At 10 percent, you have a minor variable. At 40 percent, you have a deal where nearly half your consideration depends on a process the buyer controls.
The second question is which metric. Revenue-based earnouts favor sellers. EBITDA-based earnouts favor buyers who can adjust cost allocations. If the buyer insists on EBITDA, push for detailed accounting definitions that lock in how every line item is treated.
The third question is what operational protections are in the agreement. Operating covenants, separate books, acceleration clauses, and clear dispute resolution are not optional add-ons. They are the difference between an earnout that functions as intended and one that pays 21 cents on the dollar.
Understanding what private equity firms look for in acquisitions helps you read an earnout proposal from the buyer's perspective. They are managing risk across a portfolio. An earnout shifts some of that risk to you. Whether that is acceptable depends on how much of your total consideration is tied to it and how airtight the protections are.
Frequently Asked Questions
What is an earnout in a business sale?
An earnout is contingent purchase price in a business sale. Part of the total consideration is paid at closing. The remainder is paid only if the business hits agreed performance targets during a defined post-closing period, typically one to three years.
How long does a typical earnout period last?
Most earnouts run one to three years, with a median around 24 months. Life sciences deals often extend three to five years due to the complexity of regulatory and clinical milestones. The length of the period directly affects how long the buyer controls the business before your earnout is settled.
What percentage of earnouts actually get paid?
SRS Acquiom research covering 100 deals shows earnouts pay about 21 cents on the dollar when you account for all deals, including those where nothing was paid. About 59 percent of deals paid something, and 28 percent were contested. Lower-middle-market deals, those with upfront values under $50 million, see even lower achievement rates.
What protections should sellers negotiate in earnout agreements?
Three protections matter most: an operating covenant requiring the buyer to run the business consistent with past practices, a requirement to maintain separate financial records for the duration of the earnout, and an acceleration clause that triggers full payment if the buyer sells the business or materially breaches the agreement during the earnout period. A clear dispute resolution process, including a neutral accounting firm as final arbiter, is equally important.
