To negotiate an earnout when selling an ABA practice, turn the headline promise into a calculation you can reproduce. Define the metric, measurement period, accounting policies, payer and collections treatment, buyer-controlled decisions, employment relationship, information and audit rights, payment timing, dispute process, taxes, and what happens after another acquisition or leadership change. Model ordinary setbacks as carefully as the maximum payout, and do not let the earnout reward choices that undermine clinical judgment, truthful billing, or sustainable staffing.

An earnout is deferred uncertainty, not extra cash

An earnout can make a difficult price conversation feel solved. The buyer believes the practice can grow but does not want to pay today for results that may never arrive. The seller believes the future is worth more than the buyer will recognize at closing. A contingent payment bridges that disagreement, but it also moves part of the purchase price into a period when the buyer may control budgets, hiring, systems, accounting, and strategy.

That does not make earnouts inherently unfair. It means the owner should treat the maximum amount as a possibility rather than part of closing proceeds. Learning how to negotiate an earnout when selling an ABA practice begins with a simpler question: under whose decisions, using whose data, and after which real-world events will this money be calculated?

Start with the reason the gap exists

Ask the buyer to explain what the earnout is meant to prove. Is the disagreement about current earnings, a new location, clinician recruiting, payer rates, a backlog of authorizations, unusually high owner compensation, recent investments, or projections that have not yet become revenue? A metric cannot be negotiated intelligently until both parties can name the uncertainty it is supposed to resolve.

The SBA sale guidance recommends valuation, qualified advice, and a comprehensive sales agreement that addresses assets, liabilities, adjustments, fees, and information access. The SBA page supplies no earnout formula and does not say contingent consideration is appropriate. Transaction counsel, tax advisers, accountants, valuation professionals, and ABA operating leaders should help determine whether a lower fixed price, seller note, escrow, rollover, staged purchase, or no deal addresses the gap more honestly.

Rebuild the formula in plain English

Write one sentence that a manager could apply without knowing the negotiation history: what is measured, for which entity and locations, over what dates, compared with what threshold, multiplied by what rate, subject to which floor, cap, and payment date. Then define every noun. “Revenue” could mean contracted charges, gross charges, submitted claims, allowed amounts, cash collected, or recognized revenue. “EBITDA” is even less self-explanatory once add-backs, shared costs, management fees, and acquisition expenses appear.

Use several months of real practice data to calculate the proposed formula independently. Reconcile the starting point to the general ledger, payroll, claims, deposits, refunds, and existing contracts. If the seller, buyer, and accountant cannot produce the same answer from the same facts before closing, they are unlikely to agree when a payment is due.

ABA revenue has a long trip before it becomes cash

A scheduled hour can be canceled. A delivered service can be missing documentation, outside an authorization, submitted under the wrong enrollment, denied, corrected, recouped, or paid months later. An earnout tied to collections may extend the buyer's control well beyond the measurement period. One tied to billed charges may reward volume that never becomes allowable revenue. One tied to recognized revenue inherits the accounting policy that defines recognition and reserves.

Document how the formula handles services delivered before closing but collected later, services delivered during the earnout but paid afterward, retroactive rate changes, secondary coverage, refunds, credit balances, recoupments, write-offs, bad debt, settlement payments, and payer delays outside the local team's control. The goal is not to make the formula generous. It is to make timing and attribution visible before they become a dispute.

Put the buyer's operating choices inside the negotiation

After closing, the buyer may decide whether to open a location, fund recruiters, replace a billing vendor, change fee schedules, centralize intake, move clinicians, allocate corporate overhead, add debt, acquire a nearby practice, or close a service line. Each choice can change the earnout even when the seller performs every promised duty. The agreement should address the decisions that matter, the seller's consultation or consent rights where negotiated, and the remedy if the buyer materially changes the measuring business.

Avoid a vague promise that the buyer will operate in the ordinary course or use reasonable efforts unless counsel can explain how it works in the actual jurisdiction and documents. Some sellers negotiate specific budgets, staffing commitments, consistent accounting policies, separate books, limits on cost allocations, or an acceleration or neutralization mechanism after defined events. No protection removes all risk, so the economic model should assume some control will be lost.

Keep the employment agreement in its own lane

A founder may be a seller, employee, clinician, executive, board member, and landlord after closing. The earnout documents need to say what happens if employment ends because of resignation, termination without cause, disability, death, role change, buyer breach, licensure limits, or a clinical disagreement. A payment for the transferred business and compensation for future services can have different legal and tax consequences; labels alone do not settle the issue.

If the seller remains a practicing behavior analyst, the BACB Ethics Code continues to govern people within its scope. It addresses truthfulness, competence, conflicts, client welfare, documentation, supervision, continuity, and transition. Nothing in the code determines earnout rights. The deal should never require a clinician to approve inappropriate intensity, unsafe caseloads, unsupported documentation, or questionable claims to protect a payment.

Read the tax rules before comparing structures

The IRS Publication 537 describes contingent-payment sales, including an example in which a business selling price includes a percentage of future profits. It explains that different installment-sale rules can apply when total selling price is not determinable by the end of the sale year. It also explains that a sale of a business is generally treated as a sale of separate assets for installment purposes, with some assets potentially ineligible.

That federal publication is orientation, not a tax answer for a particular earnout. Entity type, asset allocation, employment linkage, imputed interest, state law, timing, loss, depreciation recapture, and later price changes can matter. The Form 8594 instructions also discuss supplemental reporting when consideration later increases or decreases in covered asset acquisitions. Have qualified tax advisers model the signed structure for both parties before the seller treats deferral as a benefit.

Information rights matter after the deal team leaves

A seller cannot verify a result using only a one-line certificate from the buyer. Specify periodic statements, underlying schedules, source-system access or extracts, calculation deadlines, document retention, questions, correction periods, and the right to have an independent adviser inspect relevant records under confidentiality. Define who pays for a review and whether costs shift when the error exceeds a negotiated threshold.

Privacy still applies. The current definition of health care operations in 45 CFR 164.501 includes certain sale, transfer, merger, consolidation, and related due-diligence activities when its conditions are met. That does not give a former owner unlimited access to PHI after closing. Design reports around financial and operational evidence, use aggregated or de-identified data when adequate, and have qualified privacy and security leaders approve any continued individual-level access.

Decide how disagreements end before one begins

Earnout disputes can become expensive because the money is meaningful and the accounting questions are fact-heavy. The agreement should identify the notice, discussion, escalation, expert determination or other process, decision scope, evidence standard, timetable, payment of undisputed amounts, fees, confidentiality, and finality. An independent accountant may be well suited to a defined calculation issue but not an employment, contract, fraud, clinical, or legal dispute.

Also address change events: another acquisition, sale of the platform, recapitalization, insolvency, accounting-policy change, service-line transfer, location closure, buyer default, or loss of key data. Counsel should say which events accelerate, terminate, extend, or modify the earnout. Leaving every hard outcome to a generic dispute clause is not simplicity; it is deferred negotiation with less leverage.

Rehearse a normal setback, not only a catastrophe

River Glass Behavioral is fictional. Its two-year earnout initially pays on annual EBITDA above a threshold. In the first walkthrough, both sides assume stable staffing and collections. A second walkthrough uses events the practice has actually experienced: a 90-day credentialing delay, two supervisor leaves, a payer recoupment, and a corporate billing-system conversion. The same clinical work produces a very different earnout.

The parties revise the metric definitions, preserve the pre-close accounting policy for named items, separate a buyer-acquired location, add monthly calculation reports, and create a neutral treatment for the planned system conversion. The seller still accepts performance risk, and the buyer still avoids guaranteeing the maximum. What changes is that both can explain which risks each accepted.

Check the incentives against care and compliance

Before signing, ask how the metric behaves when the right operational choice reduces short-term results. Examples include holding a claim for correction, honoring a clinician's capacity concern, funding supervision, pausing intake, refunding an overpayment, replacing an unsafe vendor, or giving a family an appropriate transition. If the formula penalizes every responsible delay, the governance plan needs enough independence and reporting to keep financial pressure from becoming clinical or billing pressure.

The OIG General Compliance Program Guidance is voluntary and nonbinding. Its discussion of leadership, risk assessment, reporting, incentives, auditing, investigation, and corrective action can help owners test the post-close environment. That guidance approves neither an earnout nor a transaction. A defensible arrangement keeps qualified decisions, truthful claims, and corrective action outside the seller's private financial interest.

Know what would make you walk away

A seller should be willing to pause when the metric cannot be reproduced, material buyer controls remain unaddressed, required records are unavailable, accounting policies can change unilaterally, employment and earnout consequences are entangled, tax treatment is unmodeled, the dispute process is impractical, or the payout depends on care or billing choices no one should promise. The owner can compare a revised fixed price or another structure instead of treating the earnout as the only path to agreement.

The final decision record should show the fixed proceeds, maximum and expected contingent value, assumptions, buyer-controlled risks, seller duties, information rights, tax advice, clinical and compliance safeguards, downside cases, and unresolved items. A negotiated earnout is not “good” because it pays later. It is understandable because the owner can see what would produce each outcome and live with the uncertainty that remains.

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