Short answer: An earnout is a contingent payment in an M&A deal. Instead of paying the full purchase price at closing, the buyer pays part of the price later if the acquired business reaches agreed targets, such as revenue, EBITDA, gross profit, ARR, customer retention, product milestones, or regulatory approvals. Earnouts can bridge a valuation gap, but sellers should negotiate the metric, formula, timing, buyer control, reporting rights, acceleration triggers, dispute process, and tax/accounting treatment before accepting one.
You usually see an earnout when the buyer likes the business but does not want to pay today for performance that has not yet been proven. The seller says, "the growth is coming." The buyer says, "show me." The earnout is the compromise.
That compromise can be useful. It can also turn a headline valuation into a number the seller may never actually receive. The details matter more than the label.
What an earnout means in an acquisition
An earnout is a purchase-price mechanism. Part of the deal value is paid after closing only if specified post-closing targets are achieved during a defined measurement period.
For example, a buyer might offer $8 million at closing plus up to $2 million if the company reaches $5 million of EBITDA in the first year after closing. Another buyer might offer $6 million at closing plus annual payments based on customer retention, ARR growth, or a product launch milestone.
The important point is that an earnout is not the same as cash at close. It is conditional consideration. A seller should value it separately and ask how likely it is to be earned, how much control the seller will have after closing, and what happens if the buyer changes the business.
Earnout example: how the economics can change
Here is a simple example. A seller receives two offers:
| Offer | Cash at close | Earnout | Headline value | Seller question |
|---|---|---|---|---|
| Offer A | $9 million | None | $9 million | Is the certainty worth accepting a lower headline price? |
| Offer B | $7 million | Up to $4 million over two years | $11 million | How realistic is the earnout, and who controls the outcome? |
Offer B looks higher, but only if the earnout is achievable. If the buyer integrates the sales team, changes pricing, reallocates costs, delays product investment, or shifts customer ownership, the seller may have limited control over whether the target is reached.
This is why sellers should compare offers based on expected proceeds, not headline value alone.
Why buyers and sellers use earnouts
Earnouts are usually used when the parties disagree about future performance or risk. The seller wants credit for upside. The buyer does not want to overpay if that upside does not materialize.
Common situations include:
- A new contract has been signed but revenue has not yet fully appeared in the financials.
- The business is growing quickly, but the buyer is unsure whether growth will continue.
- Customer concentration, churn, or renewal risk is material.
- The seller or management team is important to post-closing performance.
- A new product, market, license, or regulatory approval could change value.
- Recent performance is strong, but the buyer doubts whether it is repeatable.
An earnout can make sense when the metric is objective, the period is reasonable, the seller has some influence over the outcome, and the buyer has a credible plan for operating the business after closing.
Common earnout metrics
The metric determines what the seller is really betting on. A revenue earnout, EBITDA earnout, ARR earnout, and milestone earnout all create different incentives.
| Metric | When it is used | Seller risk |
|---|---|---|
| Revenue | Growth businesses where top-line performance is easier to measure | Revenue can grow while margins deteriorate, so buyers may resist paying only for sales. |
| EBITDA | Profitable companies where buyers care about earnings power | Buyer-controlled costs, overhead allocations, and accounting policies can affect the result. |
| Gross profit | Businesses where revenue quality and margin both matter | Product mix, pricing, cost allocation, and supplier decisions can change the calculation. |
| ARR or recurring revenue | SaaS and subscription businesses | Definitions of ARR, churn, expansion, downgrades, discounts, and contracted versus live revenue must be precise. |
| Customer retention | Businesses with key accounts or renewal risk | The buyer's service, pricing, integration, or account-management decisions can affect retention. |
| Operational milestone | Product launches, regulatory approvals, geographic expansion, or integration milestones | Milestones can become subjective unless the completion test is specific. |
Revenue is usually easier to observe than EBITDA, but it may not reflect value creation. EBITDA is closer to profitability, but it is more exposed to accounting choices and buyer-controlled operating decisions. The best metric depends on what the earnout is trying to prove.
Where earnouts go wrong
Earnouts usually fail because the seller and buyer agreed on a headline concept but did not define the mechanics carefully enough.
The common problems are:
- Vague metric definitions: the agreement says EBITDA, revenue, or ARR without a detailed calculation method.
- Buyer control: the buyer controls spending, pricing, staffing, product roadmap, customer allocation, and integration decisions that affect the earnout.
- Changed accounting policies: the buyer changes accounting treatment, cost allocation, revenue recognition, fiscal periods, or reporting format.
- Integration conflict: the buyer's best operating decision may reduce the seller's earnout.
- All-or-nothing thresholds: missing a target by a small amount eliminates a large payment.
- Weak reporting rights: the seller cannot see the numbers needed to verify the calculation.
- No dispute process: the parties do not agree how disagreements will be resolved.
These are not just legal drafting issues. They change the economics of the deal.
How sellers should negotiate an earnout
A seller should negotiate an earnout as if it is part of the purchase price, not a loose promise about future upside.
Start with the metric. The definition should say exactly what is measured, which accounting standards apply, which revenues or costs are included, which adjustments are excluded, and whether the metric is measured monthly, quarterly, annually, or cumulatively.
Then negotiate the formula. A good formula explains the target, threshold, payout amount, cap, timing, and whether partial performance creates partial payment. A sliding scale is often safer than an all-or-nothing cliff.
Finally, negotiate control. If the seller is expected to help achieve the earnout, the agreement should address operating covenants, budget support, sales resources, customer ownership, product roadmap, management authority, and what happens if the buyer materially changes the business.
These points should be addressed before the M&A term sheet or LOI is signed, because seller leverage usually falls once exclusivity begins.
Earnout terms sellers should ask for
Not every seller will get every protection, but these are the points worth discussing before accepting contingent consideration:
| Term | Seller-friendly question |
|---|---|
| Clear metric definition | Can an independent person calculate the earnout from the agreement without guessing? |
| Partial payout | Do we receive something if performance is close but not perfect? |
| Operating covenants | Will the buyer maintain the resources, systems, and commercial support needed to hit the target? |
| Reporting rights | Will we receive regular reports and enough backup to verify the calculation? |
| Audit or review rights | Can we inspect records or use an independent accountant if we disagree? |
| Acceleration triggers | What happens if the buyer sells the business, terminates key people, shuts down the product, or changes strategy? |
| Dispute mechanism | Who resolves calculation disputes, how quickly, and at whose cost? |
| Tax and accounting review | How will payments be treated for tax, employment, and accounting purposes? |
Earnout, escrow, holdback, seller note, and rollover equity
Earnouts are often discussed alongside other deferred or conditional forms of value, but they are not the same thing.
| Term | What it usually means | Main seller risk |
|---|---|---|
| Earnout | Future payment if agreed performance or milestones are achieved | The target is missed or buyer decisions affect performance. |
| Escrow or holdback | Part of price held back to cover claims or adjustments | Funds are used for indemnity, working-capital, or breach claims. |
| Seller note | Deferred payment owed by the buyer over time | Credit risk, subordination, default, or weak security. |
| Rollover equity | Seller reinvests or retains equity in the buyer or new holding company | Future value depends on buyer performance, governance, leverage, and exit timing. |
A seller should not add all of these together as if they were cash. Each has a different probability, timing, control profile, and risk.
Accounting and tax treatment should not be an afterthought
Earnouts can create accounting, tax, and employment-classification questions. In some cases, a contingent payment is part of acquisition consideration. In others, a payment tied to continued employment may be treated differently.
The IFRS Foundation's materials on IFRS 3 Business Combinations identify contingent consideration and payments contingent on continued employment as business-combination topics. The practical point for sellers is simple: do not assume an earnout is only a commercial term. Ask tax, accounting, and legal advisors how the proposed structure affects after-tax proceeds, reporting, employment status, and buyer accounting.
Seller checklist before accepting an earnout
Before accepting an earnout, sellers should be able to answer these questions clearly:
- What exact metric determines payment?
- What is the target, threshold, cap, formula, and payment date?
- Is there partial payment for partial performance?
- Who controls the decisions that affect the metric after closing?
- What resources must the buyer provide during the earnout period?
- Can the buyer change accounting policies, cost allocations, pricing, staffing, or product strategy?
- What reports will the seller receive, and how can the calculation be challenged?
- What happens if the buyer sells the business, shuts down a product, loses a key customer, or terminates the seller?
- How does the earnout interact with escrow, indemnity, working capital, seller notes, and rollover equity?
- What is the expected value of the earnout after probability, timing, tax, and control risk?
Related Alehar resources
If an offer includes an earnout, start with the broader M&A term sheet guide. If you are still qualifying the buyer, read Questions to Ask a Potential Acquirer Before Selling Your Company. If the buyer is already in diligence, use Financial Due Diligence and Due Diligence Red Flags.
For the full transaction path, see Sell-Side M&A Process: 9 Steps to Sell a Company and Strategic vs Financial Buyers in M&A.
How Alehar helps
Alehar helps founders, owners, and management teams compare offers, model expected proceeds, negotiate earnout terms, prepare diligence materials, and manage sale processes. We help sellers understand whether a contingent payment is a fair bridge to value or a buyer-friendly way to make the headline price look better than the likely outcome.
If you are reviewing an acquisition offer with an earnout, see Alehar's selling your company advisory service or contact Alehar to discuss the process.
