TL;DR: According to SRS Acquiom's 2025 M&A Deal Terms Study, earnouts pay out only 21 cents on the dollar. Seventy-nine percent of contingent consideration goes uncollected. In ETA acquisitions, a poorly structured earnout is not a harmless appendix to the deal. It's a contingent liability sitting inside your capital structure — and most search fund operators don't know exactly what they agreed to.
What a search fund earnout actually is
According to SRS Acquiom's 2024 M&A Deal Terms Study, earnouts appeared in 21% of private-target acquisitions last year, up from 14% in 2019. In the lower middle market, the IBBA's Q4 2024 Market Pulse Report puts that figure at 35% of deals between $2 million and $50 million in enterprise value. When present, earnout consideration typically represents 18 to 25% of total deal value.
The mechanics are simple. Buyer and seller can't agree on price. Buyer sees $10 million of value in a $2 million EBITDA business. Seller wants $12 million, convinced EBITDA will climb to $2.4 million within 24 months. Neither blinks. The deal stalls unless someone creates a bridge.
The earnout is that bridge. Buyer pays $10 million at close. Seller gets an additional $2 million if EBITDA hits $2.4 million within 24 months. Seller bets on their own projections. Buyer avoids overpaying for growth that hasn't materialized. Deal closes.
Clean in theory. Much messier in practice.
Why earnouts appear in search fund deals
Four forces drive earnouts in ETA transactions. Each creates pressure independently. When they compound, earnouts become nearly unavoidable.
Valuation gap. The most common driver. A seller prices on trailing performance and a growth narrative they believe in. A search fund operator underwrites what they can verify. The gap is often 10 to 20% of enterprise value. Without a bridge mechanism, a lot of legitimate deals die here.
Forward risk transfer. Sellers often believe they know the business's trajectory better than any outside buyer can. The earnout gives them a mechanism to capture that upside if they're right. If projected growth materializes, they get paid. If it doesn't, the buyer avoided overpaying. Both parties carry the risk they're better positioned to own.
Capital structure constraints. Search fund deals run tighter than PE platform acquisitions. Less senior debt is available when a first-time CEO is the buyer. Equity from individual investors is smaller than institutional fund capital. A $2 million earnout payable 24 months out is functionally an interest-free deferred payment that makes the capital structure work on thinner margins. Earnouts are used when there is no other way to close the gap.
Seller financing tolerance. Search fund operators already rely heavily on seller notes, often 15 to 25% of enterprise value. When seller financing is already stretched, an earnout adds a contingent layer of deferred consideration without demanding cash at close. It gives the seller additional upside without additional cash obligation on the buyer's side at signing.
Know which of these four is actually driving the earnout proposal. The right counteroffer depends on identifying the real pressure point.
The ETA-specific problem no one explains at the LOI stage
PE platform acquisitions leave legacy management in place. The team that built the business keeps running it. The earnout is tied to a familiar operator who knows the business's patterns.
ETA works differently. The searcher takes over as CEO. The seller steps aside. The earnout is now tied to performance outcomes that the new operator controls, not the person who built the company and knows its rhythms.
Yale School of Management published a detailed analysis of this dynamic in ETA earnouts. The agency problem is inverted. The seller is no longer operating the business but remains compensated on its performance. The buyer is now the operator and controls every variable the earnout measures.
That inversion creates specific design requirements for ETA earnouts that don't exist in standard PE acquisitions. It also creates opportunities for disputes that experienced PE buyers don't encounter. A first-time search fund CEO walking into a poorly structured earnout has no institutional memory to lean on when the disagreement starts.
What operators get wrong before they sign
Wrong metric. Sellers push for EBITDA-based earnouts. EBITDA is manipulable. You control cost structure, cost allocations, capital decisions, and G&A after close. Bringing in a CFO, upgrading systems, or restructuring the sales team all touch the metric. Revenue-based earnouts are cleaner. Revenue is harder to move with accounting adjustments. The SRS Acquiom data shows 28% of earnouts end in formal post-closing disputes, and most disputes begin with a disagreement about how the metric was calculated, not whether the business actually performed.
No operational covenants. If you're the buyer, operating freedom after close is the whole point of the acquisition. But if residual seller involvement or earnout obligations create performance dependencies, the covenant language must be drafted precisely. Vague standards like "commercially reasonable efforts" invite interpretation fights. Lock in the specific definitions before signing. The difference between "best efforts" and "commercially reasonable efforts" has generated more M&A litigation than most operators realize.
Binary structure. An earnout that pays in full at the target or nothing below it is a cliff. You hit $2.39 million EBITDA against a $2.4 million target and pay zero. The seller's lawyer files a dispute about accounting methodology. A tiered, sliding-scale structure where partial achievement earns partial payment reduces dispute frequency and produces fairer economics for both sides. Build the tiers into the LOI, not into the definitive agreement negotiation.
No acceleration clause. If you sell the acquired business before the earnout period ends, most agreements as written don't automatically pay out the earnout. Per SRS Acquiom's 2025 tracking, 75% of deals now expressly exclude acceleration on change of control, up from 42% in 2021. That's a buyer-friendly default. If your investor base expects any near-term optionality on timing or exit, understand what that exclusion means for your obligations to the seller. It may not matter on a 7-year hold. It can matter if circumstances change.
Ignoring the funding question. This is the failure mode the Yale study identifies as systematic. Operators treat the earnout as a contingency that might never trigger. Then EBITDA grows, the trigger threshold is hit, and the earnout becomes a real payable obligation. If your balance sheet cash is deployed and you need to raise equity to fund it, your economics shrink fast. Before closing, model the earnout at full trigger. Know exactly where the cash comes from. Raising equity under pressure to fund an earnout you didn't plan for dilutes the operator's upside significantly.
How to structure an earnout that doesn't collapse at Year 2
If an earnout is required to close the deal, build it with four constraints from the start.
Revenue over EBITDA. Revenue is the cleaner metric. If the seller insists on EBITDA, lock in an accounting policy and a complete exclusion list before signing. Transaction expenses, integration costs, purchase accounting adjustments, non-recurring items, and affiliate management fees must be explicitly excluded from the calculation. No catch-all references to GAAP. Every ambiguity becomes the seller's argument two years later.
Short window. Earnout periods typically run 12 to 36 months. Every additional month creates more surface area for dispute. Push for the shortest window the seller will accept. A 12-month earnout on a clean revenue metric is operationally superior to a 36-month EBITDA earnout on an aggressive target, even if the 36-month version appears more favorable on headline deal terms.
Tiered structure. Replace the binary cliff with a graduated payout scale. Ninety percent of target earns 60% of the earnout. Full target earns 100%. Beating the target earns a defined premium. Tiered structures are harder to dispute because partial payment is already contractually defined. They also reflect the reality that earnout performance is rarely binary.
Explicit funding plan. Before the deal closes, model three scenarios: no earnout trigger, partial trigger, full trigger. Identify the capital source for each. If full trigger requires new equity or additional debt, run the economic implications through the operator's carry. Don't leave this analysis for post-close.
Earnout versus seller note versus rollover equity
Before accepting an earnout proposal, test whether alternative structures solve the underlying problem. The earnout is not always the right tool.
If the gap is a valuation disagreement driven by seller optimism about future performance, a seller note at a market interest rate is cleaner. The seller gets guaranteed additional consideration. The buyer gets the debt service obligation without the metric dispute risk. The note doesn't create an incentive misalignment post-close.
If the seller wants to participate in the business's upside after they step aside, rollover equity is the right structure. The seller takes a small equity position alongside the operator and the search fund investors. They benefit if the business grows and the operator exits well. They carry the same illiquidity the operator and investors carry. No metric, no dispute mechanism, no post-closing accounting fights.
The earnout earns its place when the seller won't accept a note at current interest rates and won't accept the illiquidity of a rollover position, but genuinely believes the business will outperform the buyer's underwriting. That's the right use case. It's narrower than most search fund LOIs treat it.
The call
In EOD, you learn one thing early: the device that kills you is the one you treated as a formality. You cleared the obvious threats, assessed the area, and stopped paying attention to the component that looked like standard hardware. It wasn't.
A search fund earnout looks like a clean close mechanism on the day you sign. It bridges the valuation gap, gets the deal done, and lets both parties feel like they won. Two years later, you're in a dispute about accounting definitions on a metric you've been running the business against the whole time, and your operator economics are degraded whether you win or lose.
Identify the real driver of the earnout proposal before you accept the terms. If a seller note or rollover equity solves the same problem, take that path. If an earnout is required to close, design it with a revenue metric, a short window, a tiered structure, and a funded contingency plan for full trigger. Connect it to your debt covenant structure and model the full capital stack at each scenario.
Make the call with complete information. That's the only way to make a call that holds.
Jonathan Bates is a partner at Patriot Growth Capital, a veteran-founded private equity firm focused on lower-middle-market acquisitions. Patriot Growth Capital does not provide investment advice. This content is for informational and educational purposes only. Past performance does not guarantee future results. All acquisitions involve risk, including loss of capital.
Frequently Asked Questions
How often do earnouts actually pay out in private company acquisitions?
According to SRS Acquiom's 2025 M&A Deal Terms Study, earnouts pay out only 21 cents on the dollar. Seventy-nine percent of contingent consideration goes uncollected. The SRS Acquiom data also shows that 28 percent of earnouts end in formal post-closing disputes.
Why is an EBITDA-based earnout riskier for a search fund operator than a revenue-based one?
EBITDA is manipulable because the operator controls cost structure, cost allocations, capital decisions, and general and administrative expenses after close. Revenue is harder to move with accounting adjustments. Most earnout disputes begin with a disagreement about how the metric was calculated, not whether the business actually performed.
What is the agency problem unique to ETA earnouts that does not exist in traditional PE deals?
In standard PE acquisitions, the seller's management team keeps running the business and the earnout is tied to a familiar operator. In ETA, the searcher takes over as CEO and the seller steps aside, so the earnout is tied to performance outcomes the new operator controls rather than the person who built the company. The seller is no longer operating the business but remains compensated on its performance.
How should a search fund operator structure an earnout to reduce dispute risk?
Use revenue rather than EBITDA as the metric, keep the earnout window as short as the seller will accept, build a tiered sliding-scale payout rather than a binary cliff, and model three scenarios before close to identify the capital source if the earnout triggers in full. All four constraints should be locked into the letter of intent, not left for the definitive agreement negotiation.
