Key takeaways
- Earnout disputes are the most common source of post-close litigation in middle market M&A, approximately 30–40% of earnouts are contested at some point during the earnout period.
- The most common earnout dispute is definitional: buyer and seller interpret the earnout measurement formula differently. Negotiate the exact formula, including every edge case, before closing.
- Founders who remain operationally involved post-close achieve earnout targets at a significantly higher rate than those who transition out quickly, but the involvement must be structured to preserve authority.
- New ownership will almost always change something about the business in the first 90 days. Prepare for change and negotiate protective provisions where earnout performance could be affected by buyer decisions.
- Rollover equity, retaining a minority stake in the business post-close, has significant upside in the second transaction but requires active engagement in the intervening period to protect and grow its value.
Earnouts appeared in 31% of lower-middle-market private company transactions in 2023, most commonly in cases where buyer and seller had a valuation disagreement, where the business had a significant growth inflection in the period immediately before closing, or where the buyer had concerns about post-close management performance.
Earnout disputes, formal disagreements about whether earnout targets were met or how they should be calculated, occurred in approximately 32% of transactions where earnouts were included, according to SRS Acquiom analysis. The disputes ranged from informal negotiations to full litigation.
The median earnout period in lower-middle-market transactions was 24 months, with EBITDA as the most common measurement metric (58% of earnouts), followed by revenue (31%) and a combination of financial and operational metrics (11%).
The close of a transaction is often described as the finish line. For founders with earnouts, seller notes, or rollover equity, it is better described as the start of the second race. The post-close period is where a meaningful portion of total transaction proceeds are earned, protected, or lost, and it is a period most founders enter with far less preparation than they devoted to the pre-close process.
The dynamics of the post-close environment are fundamentally different from anything most founders have experienced. You are no longer the owner. Decisions that you previously made unilaterally, about hiring, strategy, capital allocation, customer pricing, now require buyer approval or are made by the buyer without your input. Your role is redefined, your authority is circumscribed, and your financial outcome depends on navigating this new structure successfully.
Understanding your earnout mechanics before day one
Many founders who close transactions with earnouts cannot accurately describe, from memory, the exact formula by which their earnout will be calculated. This is one of the most expensive preparation gaps in M&A. The earnout mechanics document, typically an exhibit to the purchase agreement, governs hundreds of thousands or millions of dollars in potential proceeds, and its interpretation will be contested if performance is close to the target.
Before close, you should be able to answer all of the following questions about your earnout without consulting the agreement: What is the exact metric? (EBITDA, revenue, gross profit?) How is that metric defined? (Which accounting policies apply? Which addbacks are included?) What is the measurement period? (Calendar year? Trailing 12 months? Quarter-by-quarter?) What is the target? What is the maximum payment? What is the payment schedule? (All at end? Installment by period?) What triggers partial payment? What triggers no payment?
If your earnout calculation produces a result within 10% of the threshold amount, either above or below, expect a dispute. Build your financial tracking systems before day one so that you are generating your own independent earnout calculation from the first day of the earnout period.
The first 90 days: setting up for earnout success
The 90-day post-close period is the most critical window for earnout success. The decisions made in this period about financial systems, reporting relationships, customer communication, and operating structure will determine whether the earnout environment is functional or contested for the next 2–3 years.
First 90 Days Post-Close Priorities
Days 1–15: Financial infrastructure
Confirm that the accounting systems being used for the business will produce an earnout calculation that you can independently verify. Identify who produces the financial statements, how they are reviewed, and what the month-end close process looks like. Set up parallel tracking in a format you control.
Days 15–30: Reporting relationships
Clarify who you report to, what decisions require buyer approval, and what decisions remain within your authority. Get this in writing if it is not already in the employment agreement. Ambiguous authority structures are the primary source of post-close management conflict.
Days 30–60: Customer communication
Proactively communicate the ownership transition to key customers. Buyers often underestimate the importance of founder-to-customer relationship management in the transition. A customer who feels abandoned during the transition is a churn risk that will directly affect your earnout.
Days 60–90: Earnout tracking system
Build a monthly earnout performance tracking report. This should mirror the purchase agreement calculation exactly. Share it with the buyer's CFO and establish a monthly reconciliation process. Disputes that are identified and addressed monthly are far less likely to become formal disputes at year-end.
The most common earnout disputes and how to prevent them
Earnout disputes are rarely about bad faith, they are almost always about definitional ambiguity that both parties interpreted in their favor. The disputes that most commonly arise:
The prevention for virtually all earnout disputes is definitional precision in the purchase agreement, confirmed by your counsel before closing. After closing, you are arguing about a document that has already been signed. Before closing, you can negotiate every word.
A founder sold his $18M revenue technology services business at 7.5x EBITDA, with $2.5M of the purchase price in a 2-year earnout tied to EBITDA exceeding $2.8M annually. In year one, the business generated $3.1M of EBITDA by his calculation, well above the $2.8M target. The buyer's calculation showed $2.6M of EBITDA, below the target, after allocating $320K of corporate overhead (IT infrastructure, insurance, shared services) that was not in the business during the measurement period used for the purchase price. The founder's purchase agreement did not cap overhead allocations. After 14 months of dispute and legal fees exceeding $180K, the parties settled for approximately 60% of the disputed earnout amount. The founder later described the lack of an overhead allocation cap as his most expensive post-close oversight.
Managing rollover equity through the second bite
Rollover equity, the minority stake that founders retain in the business after a PE acquisition, represents the "second bite at the apple": an opportunity to participate in the value creation that occurs between the first and second transaction. In the lower middle market, rollover equity typically represents 5–20% of the post-close capitalization, with an expected second transaction occurring 4–7 years after the initial close.
The economics of rollover equity are highly variable. In a PE-backed business that grows EBITDA from $3M to $6M and sells at a similar multiple 5 years later with modest leverage paydown, the equity value roughly doubles or triples. A founder with 10% rollover equity on a $15M enterprise value transaction who participates in a second exit at $35M enterprise value, after debt paydown, can realize $2–4M from the rollover, on top of the proceeds from the first transaction.
Typical rollover equity percentage for founders
5–20% of post-close equity
Expected hold period to second exit
4–7 years
Rollover equity multiple of invested capital (range)
0.5x–4x depending on business performance and leverage
Protecting the value of rollover equity requires active engagement. Founders who disengage completely after the initial close often find that their rollover equity has been diluted by additional management equity grants, has underperformed due to the buyer's strategic decisions, or has been structured with preferences or waterfalls that significantly reduce their actual recovery. Read the operating agreement and shareholder agreement carefully, particularly the distribution waterfall and the anti-dilution provisions.
Frequently asked questions
How are earnout payments taxed?
Earnout payments received by founders who sold equity in a corporation are typically taxed as capital gains, the same character as the initial sale proceeds, provided the earnout is structured as additional purchase price for the equity. If the earnout is tied to the founder's continued employment (as opposed to the performance of the business), it may be characterized as ordinary income. Consult a tax advisor before and after close.
What happens to my earnout if the buyer sells the business during the earnout period?
This depends on your purchase agreement. Most well-negotiated purchase agreements include an earnout acceleration provision: if the business is sold before the earnout period expires, the outstanding earnout balance either accelerates and becomes immediately due, or the buyer must cause the acquiring party to assume the earnout obligation. Always confirm which provision applies before close.
Should I try to negotiate an earnout out of my deal entirely?
The ideal outcome is always clean cash at close with no earnout, no seller note, and no rollover. If you have negotiating leverage and a well-prepared business, push hard for this. Earnouts are almost always buyer-favorable instruments. Accept them only when they are genuinely necessary to bridge a material valuation gap or when the earnout target is clearly achievable based on trailing performance.
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