Earnout payments from the sale of a business can be taxed as long-term capital gains or as ordinary income, and which one you get depends on how the deal is structured rather than what the contract calls the payment. If the IRS treats the earnout as deferred purchase price for a capital asset you held longer than a year, the payments qualify for long-term capital gains rates, currently topping out at 20% federally. If the IRS treats the earnout as compensation for services you perform after closing, the payments are ordinary income taxed at rates that reach nearly double that, plus payroll or self-employment taxes. Add the 3.8% Net Investment Income Tax that applies to high earners, and a seller receiving a $2 million earnout can face a six-figure swing depending on classification.
The Two Buckets the IRS Uses
Every earnout payment lands in one of two categories for tax purposes.
The first is deferred purchase price for a capital asset. The payment represents additional consideration for the business or stock you transferred at closing. If you held that asset more than a year, the gain portion of each earnout payment is taxed at long-term capital gains rates.
The second is compensation for services. This applies when the payment is really tied to your continued work after closing. Compensation is taxed at ordinary income rates, and if you’re staying on as an employee, it triggers payroll taxes on top of that. If you’re a contractor, self-employment taxes apply instead.
The label in the purchase agreement doesn’t settle the question. The IRS looks at the economic substance of the arrangement. Calling a payment “additional purchase price” doesn’t make it one if the mechanics look like a performance bonus for the seller personally.
Stock Sale or Asset Sale: The Starting Point
The transaction type shapes the earnout’s tax treatment before any structuring begins.
In a stock sale, you’re transferring a capital asset: your shares. If you held them more than a year, the entire gain, including earnout payments tied to the stock sale, is eligible for long-term capital gains treatment. This is the cleaner path.
Asset sales work differently. When the buyer acquires individual business assets instead of stock, federal law requires the total purchase price to be allocated among those assets using the residual method. Some assets produce capital gains when sold, such as goodwill and long-held real estate. Others produce ordinary income. Depreciable equipment can trigger depreciation recapture. Inventory is always ordinary income. An earnout tied to an asset sale gets split across these categories in proportion to the allocation, so you end up with a blend of capital gains and ordinary income even in the best case.
Buyer and seller can agree in writing on the allocation, and that agreement binds both parties unless the IRS finds it inappropriate. Negotiating this allocation carefully is one of the highest-leverage tax moves in an asset deal.
What Actually Makes the IRS Treat an Earnout as Purchase Price
No single factor is decisive, but the pattern usually points clearly in one direction. The IRS weighs several things when deciding whether an earnout is deferred purchase price or disguised compensation.
- Whether payment is tied to business performance or personal services. Earnouts based on company-wide metrics like revenue, EBITDA, or net profit look like purchase price adjustments. Earnouts conditioned on you hitting individual targets or remaining employed look like compensation. This is the most important factor.
- Whether payments are proportional to equity ownership. If all selling shareholders receive earnout payments in proportion to their stakes, it signals a return on capital. If only the shareholders who stay on as employees get paid, or if a non-shareholder employee gets a cut, it looks like a compensation plan.
- Whether the payment survives employment termination. An earnout that disappears if you quit or get fired is almost certainly compensation. An obligation that persists regardless of your employment status supports capital gains treatment.
- Whether you’re paid reasonable compensation separately. Your post-closing salary or consulting fees should reflect fair market value for the work. If you’re earning below-market pay while receiving large earnout payments, the IRS may reclassify part of the earnout as the compensation it effectively replaces.
How Earnout Payments Are Reported: The Installment Method
Earnouts are almost always contingent payment sales, meaning the total selling price can’t be determined at closing because future payments depend on targets that haven’t happened yet. Federal tax law puts contingent payment sales under the installment method by default. You don’t elect in; you’re automatically in unless you affirmatively opt out.
Under the installment method, you recognize gain as you actually receive payments, not all at once in the year of sale. Each payment splits into three components: a tax-free return of your original basis, the gain portion taxed at capital gains rates if the underlying asset qualifies, and any imputed interest taxed as ordinary income. You report each year’s payments on Form 6252 for both the year of sale and every subsequent year you receive a payment.
How Basis Recovery Works
Because earnout payments are uncertain, the normal installment formula (with a known total contract price and a fixed gross profit ratio) doesn’t work. Treasury regulations provide specific rules depending on what the earnout agreement fixes.
If the earnout has a maximum stated price, your basis is recovered in proportion to each payment relative to that maximum. If there’s no maximum but the payment period is fixed, say five years, your basis is allocated in equal annual increments across those years. If a year’s payment falls short of the basis allocated to it, the unrecovered basis carries forward. You generally can’t claim a loss until the final payment year unless the buyer’s obligation has become worthless.
If neither the maximum price nor the payment period is fixed, the regulations require basis to be recovered ratably over 15 years. That produces painfully slow basis recovery, which is why earnout agreements almost always specify either a cap or a period.
Electing Out of the Installment Method
You can choose to report the entire gain in the year of sale instead of spreading it out. The election must be made on or before the due date (including extensions) for the return covering the year of sale. Once made, it can only be revoked with IRS consent, which is rarely granted.
Electing out means valuing the earnout obligation at closing and recognizing gain based on that value immediately. This rarely makes sense for earnouts. Valuing a contingent obligation is difficult, and recognizing all the gain upfront means paying tax before the cash arrives. The installment method is almost always the better default.
Imputed Interest Is Always Ordinary Income
Federal tax law assumes any deferred payment includes an interest component, even if the sale contract says nothing about interest. This prevents parties from disguising an economic loan as a simple deferred purchase price. The interest portion is always taxed as ordinary income, regardless of whether the underlying gain qualifies for capital gains treatment.
For most contingent payment sales, imputed interest is calculated using the Applicable Federal Rate the IRS publishes monthly, with the specific rate depending on the length of the payment period. The calculation reduces the amount treated as capital gain and increases the ordinary income portion of each payment. On a $500,000 earnout received three years after closing, several thousand dollars will be reclassified as interest income even if the agreement never mentions interest. It’s unavoidable, but it’s a small bite compared to having the entire payment reclassified as compensation.
Non-Compete Payments Are a Separate Category
Sellers frequently sign non-compete agreements as part of a sale. Payments allocated to a non-compete covenant are always ordinary income, never capital gains. Under federal regulations, non-compete covenants are classified as amortizable intangible assets that are treated as depreciable property, so they can’t qualify as capital assets and any gain on their disposition is ordinary income.
This creates tension in negotiations. The buyer wants to allocate as much as possible to the non-compete because the buyer can amortize that cost over 15 years. You want to allocate as little as possible, so more of the price flows to goodwill and produces capital gains. The IRS watches these allocations closely and can shift value toward the covenant if it determines the parties undervalued it.
The allocation needs to be defensible. A non-compete has real economic value only when the seller actually has the capacity to compete, considering age, health, financial resources, industry contacts, and geographic reach. Courts have generally found durations of two to three years reasonable, with scope and geography limited to what’s needed to protect the buyer’s investment. If the covenant covers an unreasonably broad area, or if the seller is 75 and retiring permanently, allocating significant value to it invites scrutiny. Separately negotiating and documenting the non-compete’s value, with its own stated consideration in the purchase agreement, is the cleanest approach. Bundling it into the general purchase price creates ambiguity the IRS can exploit.
Structuring the Deal to Protect Capital Gains Treatment
Tax treatment is largely determined during deal negotiations, not at filing time. Once the agreements are signed, options narrow. A few structural choices carry outsized weight.
Keep the earnout agreement legally separate from any employment, consulting, or transition services arrangement. When the earnout and employment terms sit in the same document or cross-reference each other extensively, the IRS has an easier argument that they’re economically linked. The earnout should reference only business-level metrics and should state explicitly that the obligation survives regardless of your employment status.
Set your post-closing compensation at fair market value. If you take a $100,000 salary for a role that would normally pay $250,000, the IRS will likely treat the $150,000 gap as compensation flowing through the earnout. Underpaying yourself for actual work performed is one of the fastest ways to blow up capital gains treatment.
Avoid aligning the earnout measurement period with your employment term. If the earnout runs three years and the employment agreement also runs three years, the symmetry suggests they’re two sides of the same coin. Staggering the periods weakens that inference.
Structure earnout payments so all selling shareholders participate proportionally to their ownership. When only the shareholders who stay on as employees receive payments, the arrangement looks like a retention bonus dressed up as purchase price.
Estimated Taxes on Earnout Payments
Earnout payments create a timing problem. No taxes are withheld from earnout payments treated as capital gains. If you receive a large payment mid-year and wait until April to pay the tax, the IRS will assess an underpayment penalty. The penalty rate for 2026 has been running between 6% and 7% annually, compounding quarterly.
To avoid the penalty, you need to meet one of the IRS safe harbor thresholds through withholding and estimated tax payments. You’re safe if you pay at least 90% of your current-year tax liability during the year, or 100% of your prior-year tax. If your adjusted gross income exceeded $150,000 in the prior year ($75,000 if married filing separately), the prior-year safe harbor rises to 110%.
The prior-year safe harbor is usually easier to calculate because last year’s tax bill is a known number. The 90% current-year test requires estimating income that may still be uncertain, especially when the earnout depends on future business results. You also avoid the penalty if you owe less than $1,000 after withholding and credits, but that threshold rarely helps someone receiving a six- or seven-figure earnout.
Quarterly estimated payments are due April 15, June 15, September 15, and January 15 of the following year. Sellers with uneven earnout payments across the year can use an annualized income installment method that calculates the required payment based on when income was actually received, rather than assuming it arrived evenly. That can reduce or eliminate the penalty when a large payment lands late in the year and couldn’t reasonably have been estimated earlier.