How Strategic Buyers Think About Earnouts in Sub-$10M Deals

Earnouts appear in 60-70% of sub-$10M business sales in 2026 and typically represent 10-30% of total consideration with measurement periods of 12-36 months. The earnout is the single most-negotiated structural element of a lower middle market deal, and it's where sellers most consistently leave money on the table — usually because the structure was set at LOI and never revisited at definitive agreement.

2026 Earnout Reality Check

  • Frequency: ~60-70% of sub-$10M deals include some form of earnout
  • Typical size: 10-30% of total deal consideration
  • Typical period: 12-36 months (24 months is most common)
  • Most common metrics: Revenue, EBITDA, customer retention, milestone triggers
  • Average payout: Well-structured earnouts pay 70-85% of target; poorly structured ones pay under 40%

Why strategic buyers use earnouts in this size range

Three reasons drive almost every earnout I've seen in sub-$10M deals.

Bridge a valuation gap. The seller projects forward performance materially above trailing twelve months. The buyer underwrites at a more conservative number. Rather than walk from the deal, both sides agree the seller can earn the difference if the projection materializes. This is the cleanest, most aligned reason to use an earnout — and it's the version that pays out closest to target.

Hedge customer or revenue concentration risk. The seller has 40% of revenue in two customers. The buyer worries those accounts will leave at close. The earnout becomes a retention bond — payable if the customers stick. This version pays well when the seller has earned long-term loyalty and pays poorly when concentration was actually a risk indicator the seller minimized in the CIM.

Keep the seller engaged through transition. The seller is the relationship driver, the technical lead, or both. The earnout is functionally deferred consideration tied to the seller staying involved during integration. This version gets messy because the buyer's integration plan often interferes with the seller's ability to drive the metric — and that's where most disputes start.

The four metrics — and what they really do

Revenue. Cleanest to administer, hardest to manipulate, but lets the buyer compress margins post-close (price cuts, deeper salesperson commissions, integration discounts) and still hit the threshold. Sellers often think revenue earnouts are seller-friendly. They're actually buyer-friendly when the buyer integrates aggressively.

EBITDA. More aligned with seller economics but invites accounting disputes. Whose EBITDA definition? With which add-backs? How are integration costs allocated? How is shared overhead charged in? Every line of the EBITDA bridge becomes a potential argument. Negotiate the calculation methodology in the purchase agreement — not as an exhibit you'll figure out later.

Customer retention. Common in healthcare services, MSPs, accounting firms, and any business with concentrated accounts. Effective when the metric is well-defined: are we measuring same-customer revenue, count of retained accounts above a threshold, or contract renewal? Each definition produces a different result on the same business.

Milestone-based. Common in healthcare (regulatory approvals, payer contract activations) and technology (product launches, integration completion). Binary milestones are clean — they either happen or they don't. The risk is that the buyer controls whether they happen.

The four traps that cost sellers money

1. Buyer-defined EBITDA with no add-back protection. The single most expensive mistake. If you don't negotiate which add-backs the buyer must accept, the buyer will charge integration costs, shared services, transaction expenses, severance, and corporate allocations against your earnout EBITDA. I've seen this drop earnout payouts by 50% on the same operating performance.

2. No operational covenants. The buyer can't be allowed to intentionally suppress the earnout metric. Standard protections: required minimum sales investment, no material change to pricing without seller consent, no integration that materially changes the operating model, key employee retention obligations. Without these, the buyer can kill the earnout while staying within the technical letter of the agreement.

3. Vague payment timing. When does the earnout get calculated, who calculates it, when do you get paid after calculation, and what are your audit rights? "Payable within 30 days of period close" is not a negotiated term — it's a placeholder. Real terms specify the calculation deadline, the dispute window, the audit rights, and the payment trigger.

4. No dispute resolution mechanism. Earnout disputes will happen. The question is whether they default to expensive litigation or to a defined process: notice, negotiation period, mediation, then arbitration or expert determination. Without a defined process, the buyer's leverage in any dispute is enormous because litigation costs and timing favor the larger party.

What a well-structured earnout looks like

The version that consistently pays close to target has six features: a clearly defined metric the seller can influence post-close, negotiated add-back protections in the EBITDA bridge, operational covenants that prevent intentional suppression, defined payment timing with audit rights, a multi-step dispute resolution mechanism, and an acceleration trigger if the buyer breaches material covenants. Get those six things into the purchase agreement and your earnout will perform meaningfully above industry average.

For owners thinking about earnout structure in their specific industry, our behavioral health and HVAC coverage walks through how earnout structures vary by category — earnouts in healthcare PE deals look very different from earnouts in service-business strategic acquisitions, and the protections that matter most are different in each.

John's Take

"I worked a sub-$8M deal last year where the seller had a 22% earnout tied to year-two EBITDA. We spent two weeks at LOI getting the EBITDA calculation methodology, the add-back protections, and the operational covenants exactly right — and the seller's lawyer thought we were being aggressive. The buyer integrated harder than expected and the year-one numbers came in $400K below target. Because we had the protections, the seller still earned 91% of the target earnout. Without those protections, my read is the payout would have been around 35%. The negotiation that matters happens at LOI, not at definitive agreement."

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Frequently Asked Questions

What size earnout is typical in a sub-$10M business sale?
Earnouts in sub-$10M deals typically represent 10-30% of total consideration, with 15-20% being the most common range. Smaller deals (sub-$3M enterprise value) often see larger earnout percentages (20-35%) because buyers have less risk capacity and use deferred consideration to manage downside. Larger deals ($5M-$10M) see smaller percentages (10-20%) because buyers have more confidence in the diligence outcome and the seller has more leverage to push for cash at close. Measurement periods are most commonly 24 months, though 12-month earnouts are common when the metric is customer retention and 36-month earnouts are common when the metric is multi-year EBITDA growth. Anything longer than 36 months is unusual in this size range and should trigger careful review.
How do strategic buyers and PE buyers structure earnouts differently?
Strategic buyers tend to favor revenue-based or customer-retention earnouts because they intend to integrate the operations quickly, which makes EBITDA-based earnouts difficult to administer (the standalone P&L disappears within 90-180 days post-close). Strategic earnouts tend to be shorter (12-24 months) and have more aggressive integration covenants embedded. PE buyers, by contrast, more often favor EBITDA-based earnouts because they typically maintain the target as a standalone platform or clearly-segmented business unit, making EBITDA measurable for longer. PE earnouts tend to run 24-36 months and frequently include rollover equity components alongside the earnout, which creates aligned incentives but also more complex tax outcomes. Both buyer types are willing to negotiate on structure if the seller pushes — the worst earnouts I've seen came from sellers who accepted the buyer's first draft.
What are the four most common earnout traps for sellers?
First, accepting buyer-defined EBITDA without negotiated add-back protections — buyers will load integration costs, shared services, transaction expenses, severance, and corporate allocations into the earnout calculation if you let them. Second, no operational covenants restricting how the buyer runs the business post-close — without protections, the buyer can intentionally suppress the metric while staying within the letter of the agreement. Third, vague payment timing language — when is the earnout calculated, who calculates it, what are your audit rights, when do you get paid? Specifics matter. Fourth, no defined dispute resolution mechanism — earnout disputes will happen, and without a structured process (notice, negotiation, mediation, arbitration or expert determination) the seller defaults into expensive litigation where the buyer's resources advantage is overwhelming. Negotiate all four at LOI, not at definitive agreement.
What does a well-structured earnout look like?
A well-structured earnout has six features. A clearly defined metric the seller can directly influence post-close — vague metrics tied to integration outcomes the buyer controls are red flags. Negotiated add-back protections in the EBITDA bridge, with specific exclusions for integration costs, shared services, transaction expenses, severance, and corporate allocations. Operational covenants that prevent intentional metric suppression — minimum sales investment requirements, pricing change consent rights, key employee retention obligations. Defined payment timing with audit rights and a dispute window. A multi-step dispute resolution mechanism culminating in expert determination or arbitration rather than litigation. And an acceleration trigger that pays the full earnout if the buyer breaches material covenants. Earnouts with all six features consistently pay out 70-85% of target. Earnouts missing two or more features average under 40%.