An earnout is deferred, contingent consideration.
An earnout is deferred, contingent consideration. It becomes real value only after you define the metric, the accounting policy, the period, control rights, acceleration, and what happens if you also stay employed. Gross profit, revenue, and EBITDA are not interchangeable yardsticks. Probability-weight the outcomes, especially when one client dominates the book, instead of adding the contractual maximum to the cash paid at signing.
What to know before using the headline number
- The contractual ceiling on a contingent payment is a cap, not a forecast of what you will collect.
- Gross profit, top-line billings, and EBITDA invite different buyer behaviors, so the metric has to match the disagreement you are actually trying to bridge.
- Accounting policy, affiliate charges, pass-through spend, and customer-migration rules move more money than the stated percentage.
- If the contingent period is glued to your job, the buyer can pressure the role or you can pressure the company; separate employment from the formula wherever the facts allow.
- A concentrated account turns the earnout into a single-event bet that should be probability-weighted, not added to cash as if it were escrowed.
Contingent consideration is a wager, not a bonus sticker
Sellers hear a cash number plus an earnout maximum and add them together as if the second amount were already in escrow. It is not. After closing, the buyer owns the company, chooses the customers to keep, sets pricing, hires and fires, and controls the ledger that will compute the metric. You are taking credit risk and operating risk in exchange for a chance at more proceeds. That can be rational when the parties disagree about growth or about a concentrated account. It is not the same thing as being paid.
I treat the contractual ceiling as a marketing caption until someone builds a base, downside, and dispute case. Those cases need a written formula, sample calculations using recent months, and a rule for what happens if the buyer folds the company into a larger group. If you cannot recompute the hypothetical payout from the last trailing year, you cannot underwrite the next two. The IBBA glossary and ordinary brokerage usage describe earnouts as contingent; federal installment-sale rules then ask a separate question about when and how deferred amounts are taxed.
Gross profit, revenue, and EBITDA measure different behaviors
Revenue is the easiest number to inflate and the weakest proxy for owner proceeds. A buyer can accept low-margin work, discount aggressively, or push pass-through media spend through the top line to trip a revenue hurdle while leaving little profit. Gross profit is harder to game if cost of delivery is defined tightly, but it still moves with mix, freelance labor, software, and how the buyer classifies account management. EBITDA is closer to cash generation and also the easiest place to park new overhead, related-party charges, and 'one-time' integration costs.
Pick the metric that matches the disagreement. If the fight is whether a large account will renew, a gross-profit test on that account plus the rest of the book may be cleaner than company-wide EBITDA after the buyer adds a regional manager. If the fight is whether the team can replace the owner, a contribution-margin test after a stated replacement salary may be cleaner than raw billings. Write inclusions, exclusions, and a sample worksheet. A metric without a worked numerical example is an invitation to argue later.
Accounting policy is the real formula
The label 'GAAP consistently applied' will not save you if the company has never closed a true accrual month. Decide cash versus accrual, treatment of discounts, refunds, media pass-throughs, contractor labor, capitalized software, related-party services, and whether new customers sourced by the buyer count. Decide whether a customer that existed at closing but is later moved to an affiliate still sits in the metric. Those policy choices move more money than the stated percentage.
Give yourself information rights: monthly reports, access to the general ledger, and a defined accountant's review if the parties deadlock. Tie the calculation to named reports rather than to a dashboard the buyer can redesign. If revenue recognition for contracts with customers would change the timing of the same work, say whether the earnout follows the company's historical practice or a new policy. Ambiguity here is not neutral. It favors the party who controls the books.
Acceleration, termination, and employment should not be tangled by accident
Ask what happens if the buyer sells the company again, merges it, shuts the location, or fires the founder. Acceleration on a change of control can protect you from a second sale that wipes out the measurement period. A termination-without-cause clause can do the same if the metric requires your personal involvement. The opposite terms exist too: a for-cause clawback, a forfeiture if you leave, or a setoff for indemnity claims. Each of those terms changes expected value.
Employment coupling is the quiet leak. If the earnout requires you to remain as president, the buyer can make the job intolerable, or you can hold the company hostage. Separate the consulting or employment agreement from the contingent payment wherever you can: different term, different termination standard, different compensation. SBA change-of-ownership guidance and sale-planning materials still expect a clear agreement among the parties. Mixed roles without a map create both collection risk and tax-characterization risk.
Probability-weight the check you might receive
Assign weights to full payment, partial payment, zero, and delayed payment after a dispute. Use operating evidence, not hope: renewal dates, concentration, historical churn, delivery capacity without you, and the buyer's actual plan. A 40 percent chance of the maximum, a 35 percent chance of half, and a 25 percent chance of nothing is a different asset than the contractual cap. Discount for time and for the chance the buyer will interpret the formula against you.
Federal installment-sale publications explain that contingent payments and sales of a business as separate assets follow their own timing and character rules. Inventory and certain other components may not wait for later receipts. Ordinary recapture can also refuse to defer. Do not market an earnout as a universal tax blessing. Have a CPA place the contingent piece on the same after-tax timeline as cash, a note, and any escrow.
Client concentration turns the wager into a single-event bet
A marketing agency with one account producing a third or more of billings is not selling a diversified stream. The earnout is then mostly a bet on that relationship surviving a change of control, a new account lead, and the buyer's pricing. If the metric is company-wide, the buyer can still hit a number by replacing the account with weaker work, or miss it because the concentrated client left. Either way, you need a schedule that isolates the concentrated account from the rest of the book.
Protect the measurement from self-inflicted damage without pretending you still own the firm. Negotiated guardrails can include a covenant not to divert the named account, a minimum staffing level for that account, and a rule that a buyer-caused termination of the account is treated as if the account had performed. Guardrails have limits. They are not a substitute for a lower cash price plus a smaller, well-defined contingent piece. If the whole thesis is one client, say so out loud.
Underwrite the contingent piece like a separate security
Treat the earnout as a financial instrument the buyer will administer. You need a formula, a ledger policy, a control map, and a range of outcomes—not a hope that everyone will be reasonable.
| Issue | What the owner should assemble | What a buyer is likely to test | Why it changes the decision |
|---|---|---|---|
| Metric definition | Trailing monthly revenue, gross profit, and EBITDA bridges with pass-throughs, discounts, and contractor labor clearly marked. | Recompute the last twelve months under the proposed formula and identify every judgment call. | If yesterday's books cannot produce the payout, tomorrow's books will not either. |
| Ledger policy | Current revenue-recognition practice, related-party charges, capitalization policy, and a sample worksheet using real clients. | Change one policy at a time—overhead loading, affiliate migration, cash versus accrual—and show the payout swing. | Policy is the formula. Unwritten policy is a gift to the party who owns the general ledger. |
| Control and information | Proposed reporting calendar, access rights, named reports, and a deadlock accountant. | Ask who can terminate a named account, move work to an affiliate, or change staffing on the earnout book. | Without access and guardrails, expected collection falls even if the business performs. |
| Acceleration and employment | Draft employment or consulting term, termination standards, change-of-control language, and setoff clauses. | Model firing without cause, a second sale of the company, and a founder walk-away. | Coupled roles convert a purchase-price instrument into a retention bonus with collection risk. |
| Concentration and probability | Client-level gross profit, renewal dates, contract assignment, and historical churn. | Assign weights to full, half, zero, and disputed payment using the actual renewal calendar. | The expected contingent amount is the underwriting input; the cap is only a ceiling. |
Worked example: an agency earnout that lives or dies with one client
Assume a digital-marketing agency did $2,140,000 of billings and $1,286,000 of gross profit. One account produced $814,000 of billings and $488,000 of that gross profit. A buyer offers $1,155,000 in cash plus a 24-month contingent payment capped at $495,000 if agency-wide gross profit stays at least $1,286,000. The founder would also remain as president. Every dollar below is hypothetical and is here to show probability-weighting, not to suggest a market multiple or a going rate for agencies.
| Case | What happens to the book | Contingent payout | Probability in this teaching model |
|---|---|---|---|
| Full cap | Named account renews; mix unchanged | $495,000 | 25% |
| Half payout | Named account shrinks; other work partly replaces it | $247,500 | 30% |
| Zero | Named account leaves in month four | $0 | 25% |
| Dispute haircut | Buyer loads affiliate overhead into 'cost of delivery' | $67,400 after a fight | 15% |
| Second-sale wipeout | Buyer resells the shop at month ten with no acceleration | $0 | 5% |
Weighting those five teaching cases produces an expected contingent amount of about $208,100 before time value, legal cost, and the chance the founder is pushed out of the presidency. That is a very different instrument from 'cash plus $495,000.' If the metric had been billings instead of gross profit, the buyer could replace the $814,000 account with low-margin media pass-through and still print a top-line number while the owner collected little. If the metric had been EBITDA, a new regional manager and a management fee could erase the hurdle without a single client leaving.
A cleaner design in this illustration would isolate the concentrated account: pay a defined share of collected gross profit from that account, treat a buyer-caused termination as deemed performance, and run a smaller company-wide kicker only on the remaining book. Separate the president's seat from the formula. Acceleration on a change of control would have removed the 5% wipeout case. None of those terms appear unless you ask for them while you still have another bidder.
Publication 537 reminds owners that contingent receipts and the sale of a business as separate assets follow their own timing and character rules. Inventory and some other pieces may not wait. Do not describe the $495,000 cap as deferred capital gain. Have a CPA place the expected $208,100, the cash, and any note on one after-tax calendar.
Write the earnout so a stranger can compute it
If a competent accountant who has never met either party cannot finish the worksheet from the agreement and the books, the contingent piece is not yet a real instrument.
- 01
Name the disagreement
Write one sentence about what the parties do not believe in common: a concentrated renewal, a growth plan, or the founder's replaceability. The metric should test that sentence.
Deliverable: One-page disagreement memo
- 02
Lock the formula with a historical sample
Compute the last twelve months under the proposed definition. List inclusions, exclusions, pass-throughs, and related-party items. Attach the actual reports.
Deliverable: Look-back calculation exhibit
- 03
Write the ledger constitution
State cash versus accrual, revenue recognition, affiliate charges, customer migration, and whether new buyer-originated work counts. Require consistent application.
Deliverable: Accounting-policy exhibit
- 04
Separate the job from the check
Put employment or consulting in its own agreement with its own term, cause standard, and pay. State whether termination affects the contingent formula.
Deliverable: Decoupled transition agreement
- 05
Add acceleration and information rights
Define change-of-control acceleration, reporting, ledger access, and a deadlock accountant. Limit setoff to finally determined claims if you can negotiate that.
Deliverable: Control and acceleration rider
- 06
Probability-weight the instrument
Build full, partial, zero, dispute, and second-sale cases with operating evidence. Use the expected amount, not the cap, when you compare offers.
Deliverable: Contingent-value scenario table
Where otherwise credible analyses break down
Adding the cap to the cash number in a comparison spreadsheet
Why it matters: You will prefer the offer that promised the most imaginary dollars and grant exclusivity on a weaker expected package.
Better approach: Compare cash, notes, escrows, and expected contingent value under written cases.
Using company-wide EBITDA when the fight is one client
Why it matters: The buyer can hit or miss the hurdle through overhead, mix, and affiliate charges that have nothing to do with that client.
Better approach: Tie the formula to the cash flow in dispute and fence the rest of the book separately.
Leaving 'GAAP consistently applied' as the only accounting rule
Why it matters: A small firm that never closed accrual months gives the buyer a blank page after closing.
Better approach: Attach a sample worksheet and freeze historical practice except where you expressly change it.
Making the payout vanish if you quit or are fired
Why it matters: The buyer then owns both the company and the lever that turns off your remaining proceeds.
Better approach: Decouple the role, or accelerate on termination without cause and on a later sale of the shop.
What a defensible owner decision looks like
I have watched owners treat an earnout like a compliment. It is not. It is a bet on a number the buyer will be able to influence, computed on a ledger the buyer will own. If you cannot recompute last year under the formula, you are not selling a second slice of price. You are selling a story.
Ask for a smaller, well-fenced contingent piece when the disagreement is real, and ask for cash when the buyer is really buying your personal relationships. Have counsel and a CPA read the metric, the tax timing, and the employment overlap together. I am not your lawyer on that contract, and I will not pretend a cap is money until the worksheet says it is.
Questions owners ask
Should I add the earnout maximum to the sale price when I compare offers?
No. Compare cash, notes, escrows, and a probability-weighted contingent amount under the actual formula. The contractual cap is a ceiling, not a forecast.
Is an earnout taxed the same as cash at closing?
Not necessarily. Timing, character, interest, and whether particular assets are eligible for installment treatment depend on the structure and current rules. A CPA should model the contingent piece separately.
Can the buyer change the business in a way that kills the earnout?
Often yes, unless the agreement limits diversion, overhead loading, accounting-policy changes, and termination of named accounts. Control rights and sample calculations matter as much as the headline percentage.
Can an earnout be secured?
Sometimes parties use escrow, a guaranty, or a subordinated note overlay. Security, priority, and SBA or senior-lender rules are transaction-specific. Unsecured contingent paper should be valued as unsecured.
Does a restoration or medical practice earnout work the same way as an agency's?
The legal idea is similar; the metric is not. Insurance-referral concentration, provider enrollment, and storm-driven volume each need their own definition. Copying an agency formula into a clinic is how disputes are born.
Should the earnout period match the training period?
Not automatically. Training can end in ninety days while a renewal cycle takes two seasons. Different clocks can coexist if the documents say so. Gluing them together without a map creates leverage nobody intended.
Sources and review date
Last reviewed: September 3, 2026. Sources are linked for context; a national benchmark is not a substitute for local comparable sales or a purpose-specific appraisal.
- IRS Publication 537: Installment Sales — Explains installment-sale treatment, contingent payments, unstated interest, debt assumptions, and the separate treatment of assets sold as part of a business.
- U.S. Small Business Administration: Merge and acquire businesses — Owner-oriented guidance on valuation, agreements, due diligence, and professional support in an acquisition.
- U.S. Small Business Administration: Close or sell your business — Current owner guidance on sale planning, valuation approaches, sale agreements, transfer choices, professional advice, and maintaining required records.
- International Business Brokers Association glossary — Professional definitions for SDE, transaction terms, and Main Street business brokerage concepts.
- Financial Accounting Standards Board: Revenue recognition overview — Summarizes the Topic 606 framework for reporting the nature, timing, and uncertainty of revenue and cash flows arising from customer contracts.
- SBA SOP 50 10 lender and development company loan programs — Current SBA lending procedures; financing rules can affect valuation scope, equity injection, seller debt, and change-of-ownership underwriting.
- IRS Instructions for Form 8594 — Explains purchase-price allocation for qualifying asset acquisitions, including inventory, equipment, identifiable intangibles, and goodwill.
- IRS: Closing a business — Identifies federal filing considerations when a business closes or its assets are sold.