Earnouts in Business Sales: When They Make Sense (and When They Don’t)
An earnout does not settle a valuation disagreement. It postpones the disagreement until after the buyer controls the business. The structure can bridge a specific, measurable gap in expectations, but it can also turn part of the seller’s price into a claim on accounting results the seller no longer controls.
The right question is not whether earnouts are good or bad. It is whether the disputed value depends on a short-term outcome that can be measured objectively, whether the seller can influence that outcome and whether the agreement prevents the buyer from changing the rules. Owners should assess this before signing the letter of intent.
An earnout is contingent purchase price
An earnout pays additional consideration if the acquired business reaches agreed financial or operating targets after closing. The agreement defines the measurement period, performance metric, calculation, payment date, cap, reporting rights and dispute process.
It differs from a vendor take-back note. A vendor note is generally a fixed debt obligation subject to credit and subordination risk. An earnout may never become payable if the target is missed, even when the acquired company remains profitable.
Earnouts bridge performance gaps, not multiple gaps
An earnout can work when the seller expects a major contract, customer renewal, product launch or near-term growth that the buyer is unwilling to value at closing. The future event can then determine additional price.
It is less effective when buyer and seller disagree only about the valuation multiple. If both parties agree on next year’s EBITDA but one applies five times and the other seven times, an earnout based on EBITDA does not resolve the underlying difference. It merely exposes the seller to post-closing operating risk.
The metric should match the source of disagreement
Revenue is relatively visible but can reward low-margin growth. Gross profit captures volume and margin but depends on consistent cost classification. EBITDA aligns with valuation but is affected by overhead allocation, integration costs, accounting policies and management decisions. Customer or contract milestones can be precise but may not reflect total business quality.
Use the narrowest metric that tests the disputed assumption. If the issue is whether a named customer renews, a customer milestone may be more defensible than company-wide EBITDA. If the issue is sustainable profitability, revenue alone may be misleading.
A worked earnout example
Assume a buyer offers $7.0 million at closing plus up to $1.5 million if next-year EBITDA reaches $1.5 million. The payout equals $3.00 for each dollar of EBITDA above $1.0 million, capped at $1.5 million. At $1.4 million of EBITDA, the seller receives $1.2 million. At $1.5 million, the seller receives the full $1.5 million.
Now assume the buyer adds $180,000 of corporate overhead and incurs $120,000 of integration costs. Before those charges, the business produced $1.55 million. After them, measured EBITDA is $1.25 million and the earnout falls to $750,000. A definition addressing overhead allocation and integration costs creates a $750,000 difference in this example. The formula is not the main risk. The accounting rules beneath it are.
Buyer control creates the central conflict
After closing, the buyer controls staffing, pricing, customer selection, capital spending, product investment and integration. Those decisions can improve long-term value while reducing the earnout metric during the measurement period. A seller cannot assume the business will continue to operate exactly as it did before closing.
Protective language may address ordinary-course operation, cost allocations, diversion of customers, changes in accounting policy, access to staff and deliberate actions intended to avoid payment. No clause recreates ownership. The seller should accept an earnout only after understanding how much control has been surrendered.
Definitions need a complete accounting policy
An EBITDA earnout should state the accounting framework, hierarchy of policies, treatment of acquisition costs, shared services, new hires, bad debts, leases, related-party charges, synergies and non-recurring items. It should also address whether the buyer can shift revenue or expenses between entities.
The baseline should reconcile with the normalized earnings used to set price. A quality of earnings analysis can expose areas likely to produce disagreement before the purchase agreement is drafted.
Reporting and dispute rights determine enforceability
The seller needs timely calculations, access to supporting records, a defined objection period and a mechanism for unresolved accounting disputes. The independent accountant’s mandate should be clear, including whether the process is an expert determination and which issues remain legal questions.
Payment timing also matters. A calculation delivered months late reduces value and can create enforcement uncertainty. The agreement should state when the buyer must calculate, when the seller can inspect, when disputes are referred and when undisputed amounts are paid.
Tax treatment depends on the structure
Canadian tax treatment depends on whether the amount is fixed or contingent, the property sold and the agreement’s terms. CRA’s published administrative position describes a cost-recovery method for qualifying share-sale earnouts when specific conditions are satisfied. Other structures can produce different timing and character.
The parties should obtain tax advice before the asset or share sale and earnout language are fixed. The gross maximum payout is not the seller’s after-tax value.
Compare an earnout with the available alternatives
Alternatives include a lower fixed price, a seller note, escrow for a specific risk, rollover equity or a delayed closing after the uncertain event is resolved. Each reallocates risk differently. A fixed-price reduction may be preferable when the seller wants certainty and has no post-closing control.
Rollover equity can preserve participation in the combined company but introduces governance and liquidity risk. A recapitalization may suit an owner who wants liquidity while retaining ownership. Model every alternative using the business sale proceeds calculator as a starting point, then add probability and timing.
Preparation can reduce the need for contingent price
Sellers strengthen the fixed-price case by documenting normalized earnings, customer retention, backlog, margins and growth investments before going to market. Competitive tension also limits a buyer’s ability to shift price into an earnout after exclusivity.
Our article on preparing a business for sale explains how stronger records and lower owner dependence improve certainty. An earnout should address a genuine residual issue, not compensate for avoidable seller preparation gaps.
The payout curve can reduce binary risk. A single threshold creates a cliff where one dollar of performance determines a large payment. Tiered or linear formulas pay proportionately across a range. Floors can protect the buyer from paying for weak performance, while caps define maximum exposure. The formula should be tested at several results, including just below and just above every threshold.
Acceleration events should be considered. If the buyer resells the company, terminates the seller without cause, closes the relevant business line or makes measurement impossible, the agreement may accelerate some or all of the earnout. Without an acceleration rule, the event that destroys the measurement can also destroy the seller’s remaining price.
Security is less common for earnouts than fixed seller notes because the amount is not yet determined, but credit risk still exists after the target is achieved. The agreement should address when the amount becomes a debt, whether interest accrues after the payment date and what remedies apply if the buyer disputes or delays payment.
Sellers should also model probability. A maximum $2 million earnout is not worth $2 million today. If the seller assigns a 60% probability of full payment, a 25% probability of half payment and a 15% probability of zero, the expected nominal payment is $1.45 million before discounting for time, tax and enforcement risk. This does not predict the outcome. It forces the negotiation to distinguish maximum value from expected value.
The same model should compare an unsolicited buyer’s structure with a broader market process. An unsolicited offer may carry a high headline price because the buyer expects to move value into contingent terms during exclusivity. Competitive alternatives expose whether the earnout is genuinely required.
Employment termination is another recurring fault line. If the seller remains as president and the buyer can dismiss that person during the measurement period, the agreement should state what happens to the earnout. Continued employment and purchase-price rights are separate legal relationships, and leaving one dependent on the other can give the buyer unexpected leverage.
The seller should keep copies of the final baseline data, calculation schedules and accounting policies. Memories change after closing and management teams turn over. A complete record allows the parties and any independent accountant to compare results against the same starting point rather than reconstructing the deal years later from incomplete systems and conflicting recollections.
Frequently asked questions
What is the best earnout metric?
The best metric directly tests the disputed assumption, can be measured consistently and is not easily changed by buyer-controlled decisions.
Is revenue safer than EBITDA?
Revenue is usually simpler, but it can reward unprofitable sales. EBITDA better reflects profitability but needs more detailed definitions and protections.
Can the seller manage the business during the earnout?
Sometimes, but the buyer owns the company and ultimately controls governance. Employment rights and earnout protections should be documented separately and consistently.
What happens if the parties disagree on the calculation?
The purchase agreement should provide records access, an objection process and a defined independent-accountant mechanism for accounting disputes.
Should an earnout be included in the LOI?
Yes. The LOI should state the amount, period, metric, payout concept and major protections. Leaving the structure open until the purchase agreement weakens the seller.
Next steps
KitsWest Capital helps sellers compare fixed and contingent offers, model expected proceeds and negotiate earnout economics alongside legal and tax advisors. This work forms part of our business sales advisory.
If an offer shifts a meaningful portion of value beyond closing, contact KitsWest Capital before accepting the headline price.
