Earnouts in M&A Interviews: Structure, Accounting Instinct, and Risks

Earnouts bridge valuation gaps. The seller wants credit for upside they believe is coming. The buyer refuses to pay for it in cash today. Interviews want the economics and the agency problems, not a twenty-page SPA lecture.

The short answer

"An earnout is contingent purchase consideration. Part of the price is paid later if the business hits agreed metrics such as revenue, EBITDA, or milestones. It lets parties close when they disagree on forecast. The tradeoff is misaligned incentives, disputes over accounting definitions, and complexity in the model and integration."

Why deals use them

Earnouts are not free upside for the seller. They are deferred price that may never pay. Buyers who market a "cheap" upfront multiple without mentioning expected earnout are playing presentation games.

Common structures

Earnout Payment = f(Actual Metric vs Target)
often capped: Payment between 0 and Cap

Interviewers like when you name the three levers: what is measured, over what window, and how payment scales. Vague "there is an earnout" answers fail the follow-up.

Buyer vs seller tension

Classic fight: buyer moves revenue recognition or loads corporate overhead onto the earnout entity to miss the target. Seller fight: inflate near-term metric at the expense of long-term health. Good SPAs try to define accounting policies, cost allocations, and operational covenants for the earnout period. You do not need to draft them in an interview. You need to know the fight exists.

Modeling instinct (interview level)

• Probability-weight or scenario the earnout in returns
• Treat expected earnout as part of consideration when thinking about true purchase price
• Do not assume base case hits max earnout without a story
• Remember earnouts can be liabilities on the buyer's books (fair value / contingency accounting themes at a high level)
• Track cash timing: Year 2 earnout cash is not free equity IRR padding

You do not need ASC paragraph numbers. You need: contingent consideration affects what we really paid, and when cash leaves.

PE angle

Earnouts can make a CIM look cheaper on upfront multiple while total consideration is higher. In diligence, rebuild purchase price including expected earnout. Ask whether management compensation already overlaps with the same metrics. If founders roll equity and also sit on a large earnout, incentives can stack in ways that encourage short-term metric maxing.

Also ask what happens if the buyer sells the asset before the earnout ends, or if a material contract is terminated. Process letters and SPA summaries matter here as much as the CIM hockey stick.

Earnout vs alternatives

Saying "we used an earnout" without contrasting these tools sounds junior. In interviews, a clean compare earns points.

30-second verbal

"Earnouts defer part of price until performance proves out. They close valuation gaps but create incentive and definition risk. I would scenario the payment, read the metric definition carefully, and include expected earnout when I talk about what the buyer really paid."

Follow-ups to prep

1. Earnout vs seller note vs rollover equity
2. What metrics are hardest to game?
3. How does an earnout change IRR if paid in Year 2?
4. How would you diligence an EBITDA definition in the SPA?

Common traps

• Treating max earnout as base case purchase price without probability
• Ignoring agency risk and accounting definition fights
• Quoting upfront EV / EBITDA as "the" multiple when earnout is material
• Forgetting cash timing in the returns case

Related

Cash vs Stock M&A, M&A Synergies, and MAC clauses for other closing-risk language.