Key Takeaways
- Florida business law protects companies from unfair competition, contract breaches, and partner disputes.
- Acting early saves time, money, and business relationships.
- An experienced business attorney helps you assess risk and choose the right legal strategy.
An earnout dispute is a disagreement over whether a contingent payment tied to post-closing performance, such as adjusted EBITDA or annual recurring revenue, was calculated correctly and earned in good faith. These fights often involve substantial legal fees and can drag on for extended periods. Beyond the dollars, they poison the buyer-seller relationship right when integration needs cooperation most, and they often hinge on the implied covenant of good faith and fair dealing.
Key Takeaways
Earnout disputes almost always trace back to ambiguous metric definitions, buyer control over post-closing operations, and dispute-resolution language that fails to separate arithmetic from legal questions.
| Point | Details |
|---|---|
| Definition drives outcomes | Precise, line-item metric definitions prevent most Adjusted EBITDA and ARR disputes before they start. |
| Know your dispute type | Calculation, integration, bad faith, and access disputes each need a different resolution strategy. |
| Match the forum to the question | Accounting experts handle arithmetic; arbitration or courts handle interpretation and intent. |
| Move fast when disputes arise | Preserve records and request supporting schedules immediately to protect your position. |
| Get the clause reviewed early | Fornarolegal helps draft and review earnout language, and represents clients when disputes escalate to litigation. |
This article is general information, not a substitute for advice from a qualified lawyer. Consult a qualified legal professional about your own circumstances before acting on anything here.
Table of Contents
- What Is an Earnout Dispute Really About?
- Why Do Earnouts Generate So Many Disputes?
- What Are the Most Common Types of Earnout Conflicts?
- How Do You Resolve an Earnout Dispute?
- How Should You Draft an Earnout Clause to Prevent Disputes?
- What Role Does the Implied Covenant of Good Faith Play?
- What Should You Do Immediately If an Earnout Dispute Arises?
- What Do Recent Court Decisions Teach About Earnout Drafting?
- How Does Experienced Counsel Turn This Checklist Into Contract Language?
- Sources
What Is an Earnout Dispute Really About?
Strip away the legal jargon and every earnout dispute boils down to one question: did the buyer’s post-closing decisions and calculations give the seller a fair shot at the payment both sides negotiated? Earnout disputes rank among the most common forms of post-closing M&A litigation, largely because the buyer runs the business during the very period that determines the seller’s payout. That structural imbalance is the root of nearly every fight that follows.
Why Do Earnouts Generate So Many Disputes?
The buyer controls operations after closing. The seller just watches and hopes the metric lands where it should. That mismatch alone creates friction, but three other structural features make it worse:
- Metric ambiguity. Vague definitions of Adjusted EBITDA, ARR, or revenue categories leave room for interpretation, and sometimes manipulation, on either side.
- Integration risk. Folding the acquired business into the buyer’s operations, rerouting customers, killing the brand, or reallocating shared overhead can distort the very number the earnout depends on.
- Timing and control. Accounting cutoffs, discretionary spending decisions, and the buyer’s unilateral choices during the earnout window all shape the outcome.
Undefined pro forma adjustment language is a particularly common trigger, since it lets a buyer apply assumptions after the fact that quietly shrink earnout-eligible earnings.
Pro Tip: Replace any metric definition that relies on “in accordance with the Buyer’s customary practices” with a fixed, line-item schedule locked in at signing. Ambiguity always gets read against whoever wrote the clause.
What Are the Most Common Types of Earnout Conflicts?
Most earnout payment disagreements fall into four buckets, and knowing which one you’re in changes your entire strategy.
- Accounting and calculation disputes. Arguments over specific line items, pro forma adjustments, or which expenses count against Adjusted EBITDA.
- Integration and operational disputes. Claims that the buyer’s consolidation, customer transfers, or overhead allocation made the metric unmeasurable or unfair.
- Bad faith manipulation claims. Allegations that the buyer took deliberate action, cutting sales staff, delaying orders, diverting leads, specifically to depress the number.
- Access and information disputes. The seller can’t get the books, workpapers, or supporting schedules needed to verify the calculation at all.
A Delaware Superior Court recently found that a dispute over the definition of ARR was interpretive, not arithmetic, and therefore fell outside the narrow scope of an accountant’s true-up authority entirely.
That distinction, arithmetic versus interpretation, is the fault line running through nearly every resolution mechanism discussed below.
How Do You Resolve an Earnout Dispute?
Three paths exist, and picking the wrong one for your dispute type wastes months. Here’s how each works:
- Accounting expert (true-up) determination. A neutral accountant resolves narrow arithmetic questions, was an expense classified correctly, was a formula applied as written. Fast and relatively cheap, but limited.
- Arbitration. Broader authority, potentially covering both calculation and interpretive questions if the agreement says so. Private, faster than court, but harder to appeal.
- Litigation. Courts step in for bad-faith claims, breach of the implied covenant, and other legal questions an accountant has no power to decide.
Pros and cons run roughly like this: expert determination is quick (often a few months) and inexpensive but powerless over intent-based claims. Arbitration takes longer (six months to a year-plus) and costs more but can resolve mixed calculation-and-legal disputes in one forum. Litigation is the slowest and priciest path, sometimes stretching past a year, yet it’s the only venue for genuine bad-faith allegations.
Pro Tip: Build a “gateway” clause that states, in plain language, which categories of dispute go to the accountant and which go to arbitration or court. Silence on this point is exactly what turns a $50,000 calculation fight into a $500,000 forum battle.
How Should You Draft an Earnout Clause to Prevent Disputes?
Every earnout valuation dispute traces back to something the contract should have said more clearly. Fix these five things before signing:
- Define the metric with line-item precision. Specify how acquisitions, divestitures, discounts, and deferred revenue get treated. Don’t leave it to “GAAP as customarily applied.”
- Lock the measurement period and cutoffs. State the exact start and end dates, which accounting standard governs, and how mid-period accounting changes get handled.
- Write real operational covenants. Set floors on staffing, marketing budget, and customer routing so the buyer can’t quietly starve the business feeding the earnout.
- Grant access and audit rights. Guarantee the seller monthly reporting, raw supporting schedules, and the right to request a formal review before disputes escalate.
- Architect the dispute-resolution path deliberately. Name who decides calculation questions, who decides legal and intent questions, and what happens if the two overlap.
One of the most consistent lessons from recent case law: parties who left dispute language generic ended up litigating over which forum should even hear their fight, before ever reaching the merits.
For businesses building or reviewing these clauses, a checklist of overlooked contract provisions is worth running against any draft earnout schedule.
Pro Tip: Never use “calculation” and “amount” interchangeably in your ADR clause. Courts have read “calculation disputes” broadly enough to hand an accountant authority the drafters never intended. If you want the expert’s power limited to arithmetic, say “arithmetic calculation errors” explicitly.
What Role Does the Implied Covenant of Good Faith Play?
Every earnout agreement, even a badly drafted one, carries an implied covenant of good faith and fair dealing. It doesn’t create new obligations. It stops a buyer from exploiting a contract gap to defeat the seller’s reasonable expectations.
Courts distinguish ordinary business judgment from bad faith by looking at timing and motive. Judges have allowed manipulation claims to proceed where a buyer’s operational decisions suspiciously coincided with the earnout measurement period.
- Remedies typically include damages, declaratory relief, and sometimes injunctions.
- Fee-shifting is possible where the contract provides for it.
Pleading bad faith requires more than disappointment with the number. You need facts suggesting intent, an odd-timed layoff, a sudden customer transfer, a budget cut that only affected the acquired unit.
What Should You Do Immediately If an Earnout Dispute Arises?
Move fast. Evidence disappears and positions harden the longer you wait.
- Preserve every communication touching the metric, the acquired business, or integration decisions.
- Request the earnout statement and supporting schedules in writing, formally, even if you’ve asked informally before.
- Document operational decisions made during the earnout period, along with who approved them.
- Identify witnesses now, while memories and email trails are still fresh.
- Engage counsel promptly to issue a preservation notice and evaluate interim relief if data is at risk.
Pro Tip: Keep your preservation notice narrowly tailored to the earnout period and metric at issue. An overbroad demand invites resistance and slows down the very records you need. A practical first-48-hours framework can help structure this response.
What Do Recent Court Decisions Teach About Earnout Drafting?
Delaware courts keep drawing the same line: arithmetic goes to the accountant, interpretation and intent go to a broader forum.
- In Fortis Advisors v. Stillfront, the Delaware Supreme Court held that broad ADR language covering “calculation” disputes can grant the expert arbitrator-like authority unless the contract narrows that scope.
- In the Webata/1WorldSync line of decisions, a court found an ARR definition fight interpretive, not arithmetic, and kicked it out of the accountant’s lane entirely.
The lesson negotiators keep missing: sloppy ADR wording doesn’t just risk losing a calculation fight. It can hand a bad-faith claim to the wrong decision-maker before anyone argues the merits.
How Does Experienced Counsel Turn This Checklist Into Contract Language?
Turning these principles into an enforceable clause takes deliberate drafting, not boilerplate.
- Prioritize metric definition first; every other protection depends on it being airtight.
- Reserve narrow, specific ADR paths, one for calculation, a separate one for legal and intent questions.
- Require regular, structured reporting throughout the earnout period, not just a final statement at the end.
During drafting sessions, insist on redlines that name the accounting standard, list excluded adjustments, and spell out access rights in specific terms rather than general assurances. Document every integration decision as it happens, since that record becomes the evidence base if a dispute follows.
Pro Tip: If you’re the seller, push for a “no worse than historical practice” operational covenant. It’s simple, enforceable, and closes the biggest loophole buyers use to justify integration changes that quietly hurt the metric.
A Practitioner’s View on Earnout Fights
Most earnout disputes I’ve seen didn’t start as bad faith. They started as a vague clause nobody argued about at 11 PM before signing. Get the metric definition and dispute path right at drafting, and you’ll spend far less time and money defending the deal later.
How Matthew Fornaro, P.A. Helps With Earnout Drafting and Disputes
Fornarolegal drafts and reviews earnout provisions before they become expensive fights, and represents South Florida business owners when a dispute has already started. Matthew Fornaro brings over 20 years of court-tested experience and an AV® rating to contract negotiations, post-closing reporting disputes, and litigation over disputed calculations or bad-faith claims.
If you’re negotiating an earnout right now, get the calculation and dispute-resolution language reviewed before signing, not after a disagreement surfaces. If a dispute has already started, Fornarolegal’s contract dispute resolution service can evaluate your position and outline next steps. Schedule a consultation to have your earnout clause or dispute reviewed directly.
Sources
- Earnout Disputes: Litigation, Arbitration, and the Implied Covenant of Good Faith – Robert Melton
- Calculation or Interpretation? Delaware Superior Court Holds Earn-Out Definition Dispute Falls Outside Accountant True-Up Mechanism | Delaware Business Dispute Blog
- Delaware Court Greenlights Earnout Manipulation Claims | ReedSmith
- Contractual Complexity in Debt Agreements: The Case of EBITDA (DeFontenay et al.)
