Khaled Azar 
One in three private M&A deals now includes an earn-out, according to SRS Acquiom’s 2025 M&A Deal Terms Study, which analyzed more than 2,200 acquisitions. The average earn-out pays 21 cents on the dollar. Those two numbers tell you everything you need to know about accepting deferred consideration without reading the fine print.
Earn-outs exist to close valuation gaps. When you think your SaaS is worth $12M and the buyer thinks it’s worth $8M, an earn-out lets both sides leave the table without capitulating. The catch is who controls the P&L after you sign.
What an Earn-Out Is (and Why Buyers Propose Them)
An earn-out transfers risk from the buyer to you. That’s the whole structure.
An earn-out is a contingent payment. You receive part of the purchase price upfront. The rest gets paid later, if the business hits specific targets after close. Typical metrics: ARR growth, revenue milestones, EBITDA, or customer retention.
From the buyer’s perspective, earn-outs are rational. They believe the business can hit the targets. If they’re right, they pay up. If the business underperforms after close, they pay less. The risk transfers to the person who just cashed out and no longer controls operations.
That asymmetry is the core problem for sellers.
How Earn-Out Metrics Get Gamed
The buyer controls the P&L after close. You do not. That gap between who earns the payout and who controls the inputs creates every earn-out dispute you’ve ever heard about.
I saw this in a transaction we analyzed. A SaaS founder accepted an earn-out tied to ARR growth. Six months after close, the buyer restructured the sales team. Compensation shifted from new logo acquisition to upsell within the existing customer base. New logo ARR dropped over 40% in year one. The earn-out paid nothing. The buyer didn’t violate the agreement. They just changed how they ran the business.
of earn-out provisions include covenants requiring the buyer to operate the business consistent with past practices, per M&A legal research on private-target deal terms.
The math on this is brutal. If the earn-out agreement doesn’t restrict how the buyer operates the business, they have no obligation to run it the same way you did. They can change pricing. They can cut the sales team. They can allocate overhead from the parent company against your P&L. And 73% of earn-out provisions allow the buyer to offset indemnity claims against future earn-out payments. A dispute on any closing-related issue can zero out what you thought you were owed.
Key Earnout Provisions in M&A Deals
Not all earnout provisions are created equal. The specific language in your letter of intent determines whether the earnout protects both parties or creates a one-sided bet against the seller. Here are the provisions that matter most:
- Measurement period. Most earnouts span 12 to 24 months. Longer periods introduce more variables outside the seller’s control. Push for the shortest defensible period.
- Metric definition. Revenue-based earnouts are cleaner than EBITDA-based ones. If the buyer controls operating expenses post-close, an EBITDA target is a losing proposition for the seller.
- Dispute resolution. Mandatory arbitration clauses prevent costly litigation. Without them, earnout disputes can consume years and hundreds of thousands in legal fees.
- Acceleration triggers. If the buyer breaches the operating covenant, sells the business, or undergoes a change of control, the earnout should accelerate and pay out in full.
These provisions separate a fair earnout from a trap. If the LOI does not address them, that is a signal the buyer intends to leave the terms vague in their favor.
SaaS Earn-Out Metrics: What to Accept and What to Reject
Not all earn-out metrics carry the same risk. In SaaS deals, the choice of metric matters more than the headline number. Here’s how the common ones stack up.
| Metric | What It Measures | Buyer Controllability | Seller Risk |
|---|---|---|---|
| ARR Growth | New and total recurring revenue | High: controls hiring, comp, pricing | High |
| EBITDA | Profitability after buyer costs | Very High: controls cost allocations | Very High |
| NRR | Revenue retained plus expansion from existing customers | Medium: requires keeping customers satisfied | Medium |
| Logo Retention | Number of customers retained | Low: hard to engineer cancellations | Low |
| Revenue Milestones | Total revenue at fixed dates | High: depends on new vs. renewal mix | High |
Most generic earn-out guides tell you to push for revenue over EBITDA. That’s correct but incomplete. In SaaS, net revenue retention is a stronger metric because it requires the buyer to keep your existing customers. The buyer may gut the new logo sales motion, but they can’t let 30% of your installed base churn without it showing up in NRR. Median NRR for venture-backed SaaS sits around 106%, based on ChartMogul 2024 data across 2,100 companies. If your NRR is above that baseline, it’s a credible earn-out anchor.
Logo retention is cleaner still. It measures whether customers stayed, not whether they expanded. A buyer can de-prioritize upsell and still pass. But they can’t let customers cancel en masse without the metric collapsing. If your product has low natural churn, logo retention is the metric to demand. The churn benchmarks that matter for valuation are the same ones that should anchor your earn-out targets.
Structural Protections That Actually Hold Up
If you accept an earn-out, the language in the agreement is everything. Four provisions separate an earn-out that functions from one that becomes a dispute.
Operating covenants. The buyer must agree to run the business consistent with past practices during the earn-out period. This doesn’t prevent integration. It prevents the buyer from gutting the sales team, changing comp structures, or pulling marketing budget without your input. Most earn-out agreements don’t include this. Negotiate it explicitly.
Separate books and records. The earn-out business unit must maintain separate financials during the measurement period. If the buyer consolidates your P&L into the parent company before the earn-out closes, you lose the ability to verify your own performance. A covenant to operate as a separate profit center with auditable records is non-negotiable.
No offset against indemnity claims. As noted, 73% of earn-out provisions allow buyers to offset indemnity claims against earn-out payments. Negotiate this out. Any indemnity dispute should be resolved separately, not by reducing what you earned.
Acceleration upon breach. If the buyer breaches the operating covenants, the entire earn-out should accelerate and become payable immediately. This creates a real consequence for interfering with the metric. Without it, the buyer can breach and wait for you to litigate at the end of the period. According to Aird Berlis’s analysis of earnout provisions, acceleration clauses appear in roughly 30% of deals. Get it in yours.
Four protections in every earn-out: operating covenants, separate books, no indemnity offset, and acceleration on breach. Without all four, you’re accepting a conditional payment with limited ability to enforce the conditions.
The earn-out negotiation happens at the LOI stage, not at purchase agreement signing. Once you’ve accepted a term sheet with earn-out terms outlined, you’ve anchored the structure. Push on metric selection and protective covenants before the LOI is signed, not during purchase agreement negotiation when your position is weaker.
When to Walk Away From an Earn-Out
Not every earn-out is worth taking. In some deals, the right answer is to refuse deferred consideration entirely and either renegotiate the upfront number or walk away from the process.
Walk away when the deferred portion exceeds 30% of total consideration. At that point, you’ve given the buyer an option on your business, not accepted a deal. The earn-out is carrying too much of the price to treat as supplemental.
Walk away when the metric is EBITDA tied to a cost base the buyer controls. Post-close, buyers can allocate overhead, add management fees, and restructure compensation in ways that compress EBITDA without any bad faith. It’s just integration. The metric is too easy to influence.
Walk away when there’s no operating covenant and the buyer won’t add one. Their refusal tells you something. It means they intend to change the business, and they don’t want language that creates liability for doing so.
Walk away when there’s no dispute resolution mechanism. If the agreement doesn’t specify an accountant or arbitrator to resolve metric disputes, your only recourse is litigation. That means waiting two to four years for a result and spending 20 to 40 cents of every disputed dollar on legal fees. The earn-out math stops working.
The timing of your exit affects your earn-out position too. Sellers who come to market after a strong performance year have more room to push for higher upfront consideration and simpler deal structures. If you’re negotiating from softening metrics, you’ll face more earn-out pressure from buyers.
Frequently Asked Questions
What is an earn-out in an acquisition?
An earn-out is a contingent payment structure where part of the purchase price is paid after close, based on whether the business hits agreed performance targets. Earn-outs are common when the buyer and seller disagree on valuation. According to SRS Acquiom’s 2025 M&A Deal Terms Study, roughly one in three private M&A deals includes an earn-out provision.
How long do earn-outs typically last?
The median earn-out period is 24 months, based on SRS Acquiom deal data. Roughly 15% of earn-outs stretch to three or four years. Longer periods increase your exposure to business changes and market shifts outside your control. In most cases, push for the shortest period that still allows meaningful performance measurement.
What happens if the buyer changes the business during an earn-out?
Without an operating covenant in the agreement, the buyer is legally free to change the business in ways that affect the earn-out metric. This is the most common source of post-close earn-out disputes. Sellers who don’t negotiate operating covenants, separate books, and acceleration clauses often have limited recourse when the buyer restructures operations and the metric craters.
Can you avoid an earn-out when selling your SaaS?
Yes. Earn-outs are negotiable. The best way to avoid one is to close the valuation gap through better data: a quality of earnings report, audited financials, and strong NRR and churn documentation. Buyers propose earn-outs when they’re uncertain about forward performance. Reduce their uncertainty, and you reduce their need for contingent pricing.
Next Steps
If you’re evaluating a deal with an earn-out, the structure matters as much as the headline number. Get a second opinion before you accept deferred consideration.