What Is an Earn-Out Provision in an Acquisition, and Can My Acquirer Keep Me From Hitting the Target?

You finally receive the acquisition offer you have been working toward. The headline number looks impressive. Investors are excited. Advisors are congratulating you. Then you get deeper into the term sheet and notice something unexpected.

A large portion of the purchase price is tied to an earn-out.

Suddenly, the acquisition value you thought was guaranteed starts looking much less certain. This concern is justified.

Earn-outs are one of the most common sources of disagreement in mergers and acquisitions because they shift part of the purchase price into the future and tie payment to specific performance targets. Founders often focus on the total deal value without fully understanding how difficult those targets may be to achieve after the transaction closes.

The reality is that many earn-out disputes have little to do with founder performance. They arise because the buyer controls the business after closing, and the agreement fails to protect the seller’s interests.

How an Earn-Out Works

An earn-out is a deferred payment mechanism that allows the buyer to pay a portion of the acquisition price later if agreed-upon milestones are achieved after closing.

Instead of paying the entire purchase price upfront, the buyer splits the transaction into two components:

• Guaranteed consideration paid at closing
• Additional payments tied to future performance

Common earn-out metrics include:

• Revenue targets
• EBITDA targets
• Annual Recurring Revenue (ARR) growth
• Customer retention goals
• Product launch milestones
• Gross margin benchmarks

The difference between the upfront payment and the maximum transaction value is the amount at risk.

For founders, that distinction matters because the headline acquisition number may not represent money that is guaranteed to arrive.

The Buyer Controls The Business After Closing

One of the biggest challenges with earn-outs is that the seller usually loses operational control once the acquisition closes.

After closing, the buyer typically controls budget decisions, staffing levels, sales priorities, marketing investments, and product strategy, all of which can directly affect whether earn-out targets are achieved.

This creates an obvious concern.

Imagine your earn-out requires $5 million in revenue over the next two years. Six months after closing, the buyer reallocates your sales team to a different business unit.

Revenue growth slows. The target becomes harder to achieve.

The buyer may argue that it simply made a business decision. Meanwhile, your earn-out payment disappears.

This is why experienced founders evaluate not only the financial target but also who controls the environment required to achieve it.

Accounting Definitions Often Decide Whether You Get Paid

Many earn-out disputes are not about performance. They are about definitions.

Terms such as revenue, net revenue, gross profit, and EBITDA may appear straightforward, but they can produce dramatically different outcomes depending on how they are defined in the acquisition agreement.

For example, an earn-out tied to “net revenue” may allow the buyer to allocate shared expenses, discounts, or overhead against the acquired business.

The result can be lower qualifying revenue even when customer demand remains strong.

Founders frequently assume common accounting terms have universally accepted meanings.

In acquisition agreements, the contractual definition controls. Every word matters.

Operating Covenants Can Protect Your Earn-Out

Many founders negotiate heavily around valuation and spend much less time reviewing operating covenants.

That can be a costly mistake.

Operating covenants establish guardrails that limit the buyer’s ability to undermine earn-out performance after closing.

Common protections include:

• Minimum funding commitments
• Restrictions on transferring key employees
• Requirements to continue supporting the acquired product
• Limits on diverting customers to other business units
• Independent dispute resolution procedures

Without these provisions, the buyer may retain broad discretion over decisions that directly affect earn-out results.

Strong covenants create accountability. Weak covenants often create litigation.

Independent Review Rights Matter

Another protection many founders overlook involves dispute resolution.

If disagreements arise regarding earn-out calculations, relying entirely on the buyer’s internal accounting team rarely benefits the seller.

Many sophisticated agreements include provisions allowing review by:

• Independent accountants
• Neutral valuation experts
• Third-party auditors

These mechanisms can reduce disputes and create more objective outcomes.

Without them, founders may face an expensive legal battle simply to verify whether calculations were performed correctly.

Common Founder Mistakes

• Treating the Headline Purchase Price as Guaranteed: A $20 million acquisition with a $12 million earn-out is not the same as a guaranteed $20 million transaction. The earn-out portion remains conditional. Founders should evaluate the certainty of payment, not just the advertised deal value.
• Ignoring Operating Covenants During Negotiations: Many sellers focus entirely on financial metrics and overlook post-closing protections. If the buyer controls resources, staffing, and strategy, those decisions can directly affect earn-out performance. Strong covenants help reduce that risk.
• Failing to Review Accounting Definitions Carefully: Revenue and EBITDA calculations may look familiar, but can be defined differently in acquisition agreements. Small wording changes can produce major economic consequences. Definitions deserve the same scrutiny as valuation.
• Waiting Until Closing To Raise Concerns: Courts generally focus on the language that parties agreed to sign. If the agreement grants broad discretion to the buyer, fixing the issue later becomes difficult. The strongest negotiating leverage exists before execution.

10 Minute Earn-Out Self-Check

Before signing an acquisition agreement with an earn-out, ask:

• Are performance metrics clearly defined?
• Do operating covenants protect the business?
• Are funding commitments included?
• Is customer diversion prohibited?
• Are key personnel protections addressed?
• Is an independent accounting review available?
• Have downside scenarios been modeled?

If several answers remain unclear, additional negotiation may be warranted before closing.

Earn-Out Success Depends On More Than Performance

Many founders assume earn-outs reward future business results.

In practice, they often reward careful drafting.

The founders most likely to receive earn-out payments are usually the ones who negotiated definitions, protections, and dispute mechanisms long before the acquisition closed.

Thinking About An Acquisition Or Reviewing Deal Terms?

Our next free session on June 9, 2026, explores the three fundraising blind spots that cost founders leverage: diligence preparation, term sheet mechanics, and board control. We will also discuss hidden provisions that can reshape outcomes after a deal closes, board decisions that affect long-term authority, and practical strategies founders use to avoid costly ownership and governance mistakes.

Reserve your seat: https://howtoraisevcround.com/how-to-raise-priced-round-2

Sources Used

• [Earnouts in M&A Transactions: Key Issues and Best Practices](https://www.americanbar.org/groups/business_law/publications/blt/2021/01/earnouts/) — American Bar Association, Business Law Today
• [The Risks and Rewards of Earnouts in M&A Deals](https://hbr.org/2010/03/the-risks-and-rewards-of-earnouts) — Harvard Business Review
• [M&A Earnout Provisions: Lessons From Litigation](https://corpgov.law.harvard.edu/2018/09/27/ma-earnout-provisions-lessons-from-litigation/) — Harvard Law School Forum on Corporate Governance
• [Startup Acquisitions and Earnout Disputes](https://techcrunch.com/2022/05/10/startup-acquisitions-and-earnout-structures/) — TechCrunch