How Earnouts Work in Business Sales — What Sellers Need to Know

An earnout is a provision in a business purchase agreement where a portion of the purchase price is contingent on the business achieving specified financial or operational milestones after the close of the transaction. Earnouts are common in lower middle market M&A — particularly when there is a gap between what the seller believes the business is worth based on future performance and what the buyer is willing to pay based on current, verifiable results. When negotiated carefully, earnouts can bridge that gap and allow deals to close that would otherwise stall on price. When negotiated poorly — or accepted without understanding the risk — earnouts become future value that sellers often never see. Understanding the mechanics before you negotiate is essential.

This article is for business owners who are in or approaching a sale process and want to understand earnout mechanics before they encounter one in a buyer's letter of intent. I'll explain how earnouts are structured, the risks sellers face, and the negotiating points that matter most.

Why Buyers Propose Earnouts

Buyers propose earnouts when they see uncertainty in the business's future performance that they aren't willing to price at the seller's valuation. This uncertainty can be legitimate or strategic — sometimes it's both. Legitimate uncertainty examples include: a significant new contract that hasn't yet generated revenue, a key employee whose retention post-close is uncertain, a product or service line that the seller projects will grow significantly but that the buyer cannot independently verify, or a business that had unusually strong recent performance the buyer believes may not be sustainable. Strategic use of earnouts includes buyers anchoring on a lower upfront price and structuring an earnout that is technically achievable but practically uncertain — effectively getting the asset at a below-market price and paying full value only if the seller proves the thesis post-close. Sellers should understand which situation they're in before accepting an earnout structure.

How Earnouts Are Structured

A typical earnout has four components. The metric: what must be achieved for the earnout to be paid. Revenue earnouts are simpler to calculate and harder for a buyer to manipulate; EBITDA earnouts are more complex because the buyer controls post-close expenses that affect EBITDA. Gross profit earnouts are a middle ground sometimes used in service businesses. The threshold: the level of performance required to trigger the earnout payment — often the prior year's actual performance, the deal's projected performance, or a specific growth target. The payment: either a fixed amount paid when the threshold is hit, or a sliding scale where the payout increases proportionally with performance above the threshold. The period: most earnouts run one to three years post-close, with annual measurement periods and annual or cumulative payment calculation.

The Risks Sellers Face in Earnout Agreements

The central risk of any earnout is that the seller no longer controls the business after close, but the earnout payment depends on how the business performs post-close. A buyer who prioritizes integrating your business into their platform, redirecting your sales team to cross-sell their existing product line, or changing your pricing strategy is making decisions that could reduce the revenue or EBITDA that drives your earnout payment — not necessarily out of bad faith, but because their business priorities post-close may not align with maximizing your earnout metric. This is why earnout disputes are among the most common post-M&A litigation categories. The legal standard for buyer obligations to preserve earnout potential ("commercially reasonable efforts" vs. "best efforts") is a real and contested issue. Before accepting an earnout, sellers must understand: who controls the operating decisions that affect the metric, and what contractual protections exist if the buyer's decisions impair performance.

What to Negotiate in an Earnout

If you're going to accept an earnout, the negotiation of its terms is where value is won or lost. The most important items to negotiate: the measurement metric — prefer revenue over EBITDA, and define the revenue calculation explicitly to exclude any intercompany allocations or adjustments the buyer could apply post-close; the operating covenants — require the buyer to maintain the business unit as a going concern, fund it at agreed capital levels, and not redirect customers or contracts to other entities; the accounting methodology — require that earnout calculations use the same accounting methods used in the deal's financial due diligence, not post-close changes; dispute resolution — establish a clear process (typically an independent accountant) for resolving measurement disputes without litigation; and the non-compete alignment — make sure your non-compete restrictions don't prevent you from influencing the business in ways that could help you hit the earnout. An earnout without these protections is a promise with no enforcement mechanism.

When Earnouts Make Sense and When They Don't

Earnouts make sense in three situations: when the seller has genuine high-confidence visibility into near-term future performance that the buyer can't independently verify (a signed contract that starts in 60 days, for example); when the seller will remain in a meaningful operating role post-close and has real influence over the metrics that drive the earnout; or when the gap between the seller's asking price and the buyer's maximum upfront willingness is modest relative to the total deal size. Earnouts are a poor fit when the seller is exiting completely and will have no post-close involvement, when the earnout metric is an EBITDA figure that the buyer controls through expense allocation, or when the earnout represents more than 30%–40% of the total deal value — at that level, the risk concentration is too high relative to the guaranteed consideration. For more on structuring business sales for maximum seller protection, visit John's exit planning resource center.

Earnout Alternatives Worth Considering

Before accepting a significant earnout, sellers should ask whether the same economic result can be achieved through different structures with lower risk. Seller financing — where the seller takes back a promissory note for a portion of the purchase price — gives the seller guaranteed scheduled payments rather than contingent performance-linked payments. A reduced purchase price with more favorable terms elsewhere in the deal (lower non-compete restrictions, shorter transition obligation, better indemnification caps) may be preferable to a higher headline price with a large earnout. Equity rollover — where the seller retains a minority equity stake in the combined business — is another mechanism for capturing future upside while avoiding earnout measurement risk. Each of these alternatives has its own risk profile, and the right choice depends on the specific deal, the buyer's creditworthiness, and the seller's post-close involvement.

Earnout Structures Across the Southeast and Mid-Atlantic

Earnouts appear in deals across all the markets I work in — Charlotte, Raleigh, Greenville SC, Atlanta, Richmond, and the DC corridor — and they're most common in three categories: healthcare practices where the buyer needs the selling physician to stay and transition patient relationships; technology and MSP businesses where the buyer is acquiring recurring contracts that need to be renewed or transferred post-close; and any business where the seller's asking price reflects projected growth that hasn't yet been achieved. In each of these cases, the earnout structure needs to be calibrated to the specific revenue or operational dynamic it's protecting. Cookie-cutter earnout language that doesn't address the specific business circumstances is a setup for disputes. Working with M&A counsel who has structured earnouts in your industry is worth the investment.