Earn-outs have become an established feature of private mergers and acquisitions, particularly in transactions involving founder-led businesses, technology companies and other enterprises whose future growth is difficult to value with certainty. By making a portion of the purchase price contingent upon the future performance of the target, earn-outs enable parties to bridge valuation gaps without abandoning commercially desirable transactions.

Paradoxically, however, the very mechanism that facilitates the transaction often becomes its greatest source of post-closing disputes. Indian transactional practice has largely responded by drafting increasingly detailed earn-out provisions. While greater contractual precision undoubtedly reduces ambiguity, it has not eliminated disputes. This suggests that the problem lies not merely in inadequate drafting but in the structural characteristics of earn-out arrangements themselves.

We focus on the transaction structure most commonly encountered in private acquisitions, where the buyer acquires legal and operational control of the target upon completion while a portion of the purchase price remains contingent upon future financial or operational performance. In such transactions once an earn-out is agreed, the relationship between buyer and seller does not end at completion. It continues until the deferred consideration has either become payable or lapsed. During that period, the parties' rights and obligations extend beyond payment mechanics and require a contractual framework governing information, operational decision-making and economic risk allocation.

The Structural Imbalance

Unlike a conventional purchase price, an earn-out separates the transfer of ownership from the determination of final consideration. Although the seller relinquishes control of the business at completion, the amount ultimately received frequently depends upon decisions that will thereafter be taken by the buyer.

This creates an inherent asymmetry. The buyer acquires the contractual freedom to determine the commercial direction of the business while the seller remains financially exposed to the consequences of those decisions. Decisions concerning investment, staffing, pricing, accounting methodologies, customer allocation or corporate restructuring may all influence whether earn-out targets are achieved.

Importantly, these decisions may be entirely legitimate from the buyer's perspective. A buyer cannot reasonably be expected to operate its newly acquired business solely to maximise the seller's deferred consideration. Equally, the seller cannot be expected to bear the risk of operational decisions that fundamentally alter the assumptions upon which the earn-out was negotiated.

The legal challenge therefore lies not in preventing the buyer from exercising commercial judgment, but in preserving the integrity of the contractual mechanism through which deferred consideration is determined.

Information Rights: Eliminating Information Asymmetry

The first pillar of the proposed framework concerns transparency.

Following completion, sellers ordinarily lose access to the financial and operational information necessary to evaluate whether the earn-out has been correctly calculated. This information asymmetry frequently transforms routine disagreements into costly disputes because the seller lacks the means to verify the buyer's calculations.

Accordingly, earn-out arrangements should incorporate comprehensive information rights throughout the earn-out period. These rights should extend to periodic financial statements, management accounts, operational reports and reasonable access to records relevant to the agreed performance metrics. Inspection rights exercisable through independent professional advisers further enhance confidence in the integrity of the calculation process while preserving commercially sensitive information through appropriate confidentiality obligations.

Equally important is a structured review mechanism. The buyer should prepare an earn-out statement within a specified period after the measurement date, the seller should have a clearly defined opportunity to raise objections and technical accounting disagreements should be referred to an independent accounting expert. Questions concerning contractual interpretation or alleged manipulation should instead remain subject to arbitration or judicial determination.

Transparency cannot eliminate disputes entirely, but it substantially reduces the informational imbalance that often causes them.

Governance Rights: Regulating Post-closing Conduct

The second pillar concerns governance.

Earn-out disputes frequently arise not because financial calculations are incorrect, but because one party alleges that the business itself has been managed in a manner that distorted those calculations. Conventional drafting often attempts to address this issue through broad "ordinary course" covenants. Such provisions, however, frequently prove unsatisfactory because they either unduly restrict the buyer's commercial freedom or provide insufficient guidance regarding permissible conduct.

A more balanced approach focuses upon preserving the agreed performance measurement rather than restricting legitimate business decisions.

Accordingly, agreements should expressly address matters capable of materially affecting the earn-out, including significant changes in accounting methodologies, diversion of business opportunities, transfer of key customers or intellectual property to affiliated entities, extraordinary disposals, major restructurings and integration measures that fundamentally alter the target's operations.

Rather than requiring the buyer to maximise the earn-out, the agreement should prohibit conduct principally intended to frustrate the agreed performance mechanism. This distinction preserves the buyer's autonomy while protecting the commercial expectations that underpinned the transaction.

Economic Protection Mechanisms: Preserving the Bargain

The final pillar concerns the financial assumptions upon which the earn-out was negotiated.

The performance metric itself must first be defined with precision. Whether the earn-out depends upon revenue, EBITDA, customer acquisition or another measurable criterion, the agreement should specify the applicable accounting principles, treatment of extraordinary items, intra-group transactions and adjustments arising from changes in accounting standards.

The agreement should also address events capable of fundamentally altering the economic assumptions underlying the transaction. Material acquisitions, disposals, regulatory changes or corporate reorganizations may significantly affect financial performance without reflecting the underlying success of the acquired business. Advance agreement on the treatment of such events reduces uncertainty and discourages opportunistic conduct.

Finally, contractual remedies should distinguish between errors in calculation and breaches of contractual obligations. While accounting disputes are appropriately resolved through expert determination, allegations that a party has intentionally undermined the earn-out mechanism should remain matters for arbitration or litigation. Separating these categories promotes both procedural efficiency and legal certainty.

Conventional drafting attempts to anticipate every future contingency by increasing contractual detail. Such an approach inevitably encounters practical limits because commercial relationships evolve in ways that no agreement can comprehensively predict.

The proposed framework instead recognises that earn-outs create a temporary governance relationship extending beyond completion. The objective of drafting should therefore be to regulate that relationship through transparency, balanced governance and preservation of the agreed economic assumptions, rather than attempting to prescribe every future commercial decision.

This approach does not diminish contractual certainty. Rather, it provides a coherent structure through which contractual provisions can be designed to address the unique risks inherent in deferred consideration arrangements. As earn-outs continue to gain prominence in Indian M&A, the quality of transaction documentation will be measured not by the length of the earn-out clause, but by the effectiveness with which it governs the relationship that survives long after the acquisition has closed.

Beyond Boilerplate: A Contractual Framework for Reducing Earn-out Disputes in Indian M&A Transactions