A complete guide to earnouts in business sales — how they work, when buyers use them, the risks for sellers, and how to negotiate better terms.
An earnout is a mechanism in a business sale where a portion of the purchase price is contingent on the business achieving certain financial targets after the sale closes. Earnouts are common in lower middle market transactions — and they are almost always worse for sellers than they appear.
This guide explains how earnouts work, why buyers use them, the risks for sellers, and how to negotiate better terms when an earnout is unavoidable.
In a simple earnout structure:
Earnouts are used to bridge valuation gaps — situations where the seller believes the business is worth $10M and the buyer believes it is worth $8M. Rather than one party accepting the other's valuation, they agree to let future performance determine the final price.
Buyers use earnouts for several reasons:
Valuation disagreement: The most common reason. The buyer is not willing to pay the seller's asking price based on current performance, but is willing to pay more if the business achieves its projected growth.
Risk mitigation: The buyer is concerned about the sustainability of the business's performance post-close. An earnout shifts some of the performance risk to the seller.
Seller motivation: If the seller is staying to run the business post-close, an earnout aligns the seller's interests with the buyer's — both benefit from strong post-close performance.
Capital efficiency: The buyer can acquire the business with less upfront capital, preserving cash for operations and add-on acquisitions.
Earnouts look attractive on paper — "you get paid more if the business performs." In practice, they are almost always worth less than their face value.
An earnout paid over 2-3 years is worth less than cash at close. A $2M earnout paid in Year 2 is worth approximately $1.7-1.8M in present value terms (at a 10-15% discount rate). This discount is rarely reflected in the negotiation.
Once you sell the business, you lose control. The buyer makes the decisions — pricing, hiring, marketing, capital allocation. Your earnout depends on the business's performance, but you can't control the factors that drive that performance.
Common post-close buyer actions that reduce earnout performance:
Earnout disputes are extremely common. The calculation of earnout metrics — especially EBITDA — involves significant judgment. Buyers and sellers frequently disagree on:
Earnout disputes are expensive to resolve (legal fees, arbitration costs) and damage the relationship between buyer and seller.
Earnouts are often structured with targets that are difficult to achieve. A buyer who offers a $2M earnout contingent on 30% revenue growth is not really offering $2M — they're offering the probability-weighted value of that $2M, which may be $500K-$800K.
Structure: Additional consideration is paid if revenue exceeds a specified threshold.
Pros for sellers: Revenue is easier to measure and harder for buyers to manipulate than EBITDA.
Cons for sellers: Revenue growth doesn't always translate to profitability. A buyer who grows revenue by cutting prices or increasing costs can hit the revenue target while destroying the business's value.
Structure: Additional consideration is paid if EBITDA exceeds a specified threshold.
Pros for sellers: EBITDA is the most common valuation metric, so it aligns with how the business was valued.
Cons for sellers: EBITDA is highly manipulable. Buyers can reduce EBITDA by allocating overhead, changing accounting policies, or making strategic decisions that benefit the long-term business but reduce short-term EBITDA.
Structure: Additional consideration is paid if the business achieves specific non-financial milestones (e.g., signing a specific customer, launching a new product, obtaining a regulatory approval).
Pros for sellers: Milestones can be objective and binary (either achieved or not).
Cons for sellers: Milestones may be outside the seller's control post-close. The buyer may not prioritize the milestone.
Earnouts are not always bad. There are situations where accepting an earnout makes sense:
When you're staying to run the business: If you're staying as CEO or President post-close and have significant operational control, an earnout can be a powerful incentive. You control the performance, so you control the earnout.
When the valuation gap is real: If there is a genuine disagreement about the business's value based on forward projections, and you are confident in those projections, an earnout can bridge the gap.
When the base price is acceptable: If the base price (the guaranteed portion) is at or above your walk-away number, the earnout is upside — not a risk.
When the earnout is short: A 12-month earnout is much less risky than a 3-year earnout. The shorter the earnout period, the less time for buyer actions to affect performance.
If you must accept an earnout, negotiate these protections:
Push for a 12-month earnout maximum. Buyers will ask for 2-3 years; push back hard. Every additional year increases the risk that buyer actions will affect performance.
Use revenue rather than EBITDA when possible. Revenue is harder to manipulate. If EBITDA is used, define it precisely — specify exactly what is included and excluded, and how shared costs are allocated.
Require the buyer to operate the business in a manner consistent with achieving the earnout. Specific covenants:
Negotiate acceleration of the earnout if:
Specify a clear, fast dispute resolution process:
If the earnout is calculated quarterly or annually, require the buyer to escrow the potential earnout payments. This ensures the money is available when earned and prevents the buyer from spending it before the earnout is calculated.
When a buyer proposes an earnout, here is the negotiation sequence:
Step 1: Push for all-cash. The first response to any earnout proposal is to push for all-cash at close. Make the buyer justify why an earnout is necessary. If they can't justify it, push back.
Step 2: Quantify the discount. Calculate the present value of the earnout at a realistic probability of achievement. If the earnout is worth $2M at face value but only $800K in expected value, the buyer is effectively offering $800K less than the headline number suggests.
Step 3: Negotiate the base price up. If the earnout is unavoidable, negotiate the base price (the guaranteed portion) up to compensate for the earnout risk. A $2M earnout with a 50% probability of achievement is worth $1M — so the base price should be $1M higher than it would be without the earnout.
Step 4: Negotiate the earnout terms. If the earnout structure is agreed, negotiate the terms aggressively — duration, metrics, operating covenants, acceleration provisions, dispute resolution.
Step 5: Get it in writing. The earnout terms must be precisely documented in the purchase agreement. Vague earnout language is a recipe for disputes.
A business owner sold a $3M EBITDA business for $8M base + $2M earnout contingent on achieving $3.5M EBITDA in Year 1. The buyer allocated $400K of corporate overhead to the business post-close, reducing EBITDA to $2.8M. The earnout was never achieved. The seller received $8M instead of $10M — and spent $150K in legal fees trying to dispute the overhead allocation.
Lesson: EBITDA earnouts are highly vulnerable to buyer overhead allocation. Negotiate specific limits on overhead allocation or use revenue-based metrics.
A business owner sold a SaaS business for $5M base + $1M earnout contingent on achieving $4M ARR in Year 1. The owner stayed as CEO with full operational control. The business achieved $4.2M ARR and the earnout was paid in full. The owner received $6M total.
Lesson: Revenue-based earnouts with seller operational control can work well. The key is maintaining control over the factors that drive the metric.
If you're evaluating a deal that includes an earnout and want an independent assessment of the terms, Deal Flow's team can help. Start the conversation here.