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An earnout ties part of the purchase price to how the business performs after closing — a structure that can bridge a gap between what a buyer wants to pay and what a seller believes the business is worth, but one that comes with real risk if it isn’t structured carefully.
How an Earnout Actually Works
Instead of paying the full purchase price at closing, a buyer pays a portion upfront and agrees to pay the remainder over time, contingent on the business hitting specific performance targets — often revenue or profit thresholds measured over one to three years post-sale. If the targets are met, the seller receives the full agreed price; if not, they receive less, sometimes significantly less depending on how the shortfall is structured.
Why Buyers Propose Earnouts
Buyers use earnouts to reduce their own risk when they’re uncertain whether a business’s recent performance will continue, especially if a seller’s asking price is based on an unusually strong recent year the buyer isn’t fully confident will repeat. An earnout effectively says: if the business really performs the way you say it will, you’ll get paid for that performance, but I’m not paying full price upfront for a projection I can’t yet verify.
Why Sellers Should Be Cautious
The core problem with earnouts is that the seller usually isn’t running the business anymore during the earnout period, which means their eventual payout depends heavily on decisions made by someone else. A new owner who changes pricing, cuts marketing spend, or shifts strategy in ways that hurt short-term performance — even if those changes are reasonable long-term decisions — can inadvertently or deliberately reduce what the seller ultimately collects.
What a Well-Structured Earnout Includes
Clear, objective, easily measurable metrics — revenue is much easier to verify than a more subjective profitability measure that a new owner could influence through accounting choices. Specific protections limiting how much the buyer can change the business during the earnout period. A defined dispute resolution process if the seller believes the buyer is managing the business in a way designed to suppress the earnout payment. Without these protections, an earnout can become a source of years of frustration and potential litigation rather than a clean bridge between two parties’ expectations.
When an Earnout Makes Sense to Accept
Earnouts are most reasonable when the gap between buyer and seller valuations is modest and both sides are negotiating in good faith, or when a seller genuinely believes in the business’s continued momentum and is willing to bet on it. They’re much riskier when they represent a large portion of the total deal value, since a seller in that position has significant financial exposure to decisions they no longer control.
A Realistic Example
A buyer offers $500,000 for a pet sitting business — $400,000 at closing, with an additional $100,000 payable over two years if revenue stays at or above its current level. If the seller trusts the buyer’s operating plan and the metric is simple and verifiable, this can be a reasonable way to close a valuation gap. If the metric is vague or the buyer has broad discretion over how the business is run during that period, the seller is taking on real risk for a payment that may never fully materialize.
How to Negotiate Better Earnout Terms
If an earnout is unavoidable, sellers should push for the shortest reasonable measurement period, the simplest and most objective metric available, explicit contractual limits on operational changes the buyer can make during the earnout window, and interim reporting rights so they can monitor performance rather than waiting until the end of the period to discover a shortfall. Every one of these terms is negotiable, and a seller who treats earnout structure as seriously as the headline price often ends up with meaningfully better protection than one who focuses only on the total number.
What Happens When an Earnout Goes Wrong
The most common dispute arises when a seller believes the buyer deliberately or negligently ran the business in a way that suppressed the earnout metric — cutting marketing spend, raising prices too aggressively, or letting service quality slip. Resolving this after the fact usually requires the dispute resolution mechanism written into the original agreement, which is exactly why that mechanism needs to exist and be specific before signing, rather than being left as a vague promise to “work it out” if problems arise later.
Related Reading
Earnouts are one of several tools for bridging valuation gaps — see how they compare to seller financing, another common structure that shifts risk differently between buyer and seller.
Tax treatment of earnout payments
Earnout payments often receive different tax treatment than the upfront portion of a sale, and this is a detail sellers frequently overlook until their accountant flags it during closing. Depending on how the deal is structured, earnout payments may be taxed as ordinary income rather than capital gains, or they may trigger imputed interest requirements under IRS rules if the payments are spread over multiple years without an explicit interest component. Involving a tax advisor before finalizing earnout terms, not after signing, can meaningfully change the after-tax value of the deal and sometimes shifts which structure actually makes more sense.
Working capital and its interaction with earnouts
A common point of confusion is how working capital adjustments interact with an earnout period. If the buyer draws down cash, delays vendor payments, or accelerates client billing to boost short-term metrics right before an earnout measurement date, the seller can end up with a technically “successful” earnout number that doesn’t reflect the business’s genuine health. Sellers should ask specifically whether working capital levels will be monitored alongside the earnout metric itself, since a buyer optimizing narrowly for the measured number can sometimes do so in ways that don’t serve the business’s actual long-term interest.
Staying involved without staying in charge
Some earnout structures include a transition period where the seller remains involved in an advisory or consulting capacity, which can provide some visibility into decisions affecting the earnout without the seller retaining actual operating authority. This arrangement needs its own clear boundaries: how many hours per week the seller is expected to contribute, what decisions they can weigh in on versus simply observe, and how long the arrangement lasts. A poorly defined transition role can leave a seller frustrated, watching decisions they disagree with unfold without any real ability to influence them.
Frequently asked questions
Can an earnout be renegotiated after signing? Generally no, once the purchase agreement is executed, which is exactly why getting the structure right before signing matters so much more than trying to fix it afterward.
What percentage of a deal should realistically be tied to an earnout? There’s no universal rule, but many advisors suggest keeping earnout exposure to a minority of total deal value, particularly for sellers who won’t retain any operational influence during the earnout period.
Should I hire a lawyer specifically experienced with earnout structures? Yes, this is one area where generic small-business legal counsel often isn’t enough. An earnout’s value depends entirely on contract language most attorneys who haven’t handled several of these deals may not think to include.
How earnouts differ from seller financing
Sellers sometimes conflate earnouts with seller financing, but the two work very differently and carry different risk profiles. Seller financing means the seller extends a loan to the buyer for part of the purchase price, typically with a fixed repayment schedule and interest rate regardless of how the business performs afterward. An earnout, by contrast, ties payment directly to business performance, meaning the seller carries genuine business risk rather than simple credit risk. A deal can include both structures simultaneously, and understanding which risk each one transfers helps a seller negotiate more precisely rather than treating “deferred payment” as a single undifferentiated category.
Documentation to request before agreeing to terms
Before signing an earnout agreement, ask for the buyer’s actual post-acquisition business plan in writing, not just verbal assurances about their intentions. A buyer planning significant changes to pricing, staffing, or service offerings during the earnout period represents meaningfully more risk to the seller than one planning to run the business largely as-is. This request sometimes reveals a mismatch between what a buyer says during negotiations and what they actually intend to do once the deal closes, and it’s far better to surface that mismatch before signing than to discover it during the earnout period itself.
Ultimately, an earnout can be a genuinely useful bridge between two reasonable but different views of a business’s value, but only when it’s built with the same care and specificity as the rest of the purchase agreement. Treating it as an afterthought to the headline price is the single most common mistake sellers make, and it’s almost always avoidable with the right advisors involved early in the process.
Bring an experienced M&A advisor and a tax professional into the conversation before you sign anything, not after.
The cost of that guidance is small compared to what a poorly structured earnout can cost you later.
