Earnout arrangements are a common feature in business sale agreements, particularly in Australia. These arrangements provide a mechanism for bridging valuation gaps between buyers and sellers by tying part of the purchase price to the future performance of the business.
This article, written by our M&A business lawyers, explores the key aspects of earnout arrangements, their benefits, risks, and legal considerations under Australian law. Whether you are a buyer or seller, understanding earnout arrangements is essential to ensure a fair and legally sound transaction.
Key Takeaways
- Earnout arrangements are used to address valuation disputes in business sales.
- They involve deferred payments based on the future performance of the business.
- Clear drafting of terms is critical to avoid disputes.
- Australian tax implications and legal enforceability must be carefully considered.
- Expert legal advice is essential to structure an effective earnout arrangement.

What is an Earnout Arrangement?
An earnout arrangement is a contractual agreement where part of the purchase price for a business is contingent on the business achieving specific financial or operational targets post-sale. These targets may include revenue, profit, or other performance metrics agreed upon by the parties.
Benefits of Earnout Arrangements
Benefits for Sellers
- Higher Potential Sale Price: Sellers can achieve a higher overall price if the business performs well post-sale.
- Retention of Value: Sellers can demonstrate confidence in the business’s future success.
Benefits for Buyers
- Risk Mitigation: Buyers can reduce upfront costs and pay based on actual performance.
- Alignment of Interests: Sellers are incentivised to ensure a smooth transition and continued success of the business.
Risks of Earnout Arrangements
Risks for Sellers
- Non-Payment Risk: Buyers may manipulate performance metrics to avoid payments.
- Dependency on Buyer’s Management: Sellers rely on the buyer to manage the business effectively.
Risks for Buyers
- Overpayment Risk: Buyers may end up paying more than anticipated if the business outperforms expectations.
- Complexity: Monitoring and calculating earnout payments can be administratively burdensome.
Key Legal Considerations in Australia
Drafting the Earnout Terms
The terms of an earnout arrangement must be clearly defined to avoid disputes.
Key elements include:
- Performance Metrics: Specify measurable targets (e.g., revenue, EBITDA).
- Timeframe: Define the period over which performance will be assessed.
- Payment Structure: Outline your payment terms, including how and when payments will be made.
Tax Implications
Under Australian tax law, earnout payments may have implications for both buyers and sellers. The Australian Taxation Office (ATO) provides specific guidance on the tax treatment of earnouts, including the application of the “look-through” earnout rules under Division 118 of the Income Tax Assessment Act 1997 (Cth). These rules ensure that earnout payments are treated as part of the capital proceeds for the sale of the business.
Dispute Resolution Mechanisms
Given the potential for disagreements, it is prudent to include dispute resolution clauses in the agreement. Options may include mediation, arbitration, or litigation.
Enforceability
Earnout arrangements must comply with Australian contract law principles, including certainty, consideration, and intention to create legal relations. Ambiguities in drafting can render the arrangement unenforceable.
See our article on how to write a contract to learn more!
Practical Tips for Structuring an Earnout Arrangement
- Engage Legal and Financial Experts: Seek advice from experienced professionals to draft and review the agreement.
- Use Clear and Objective Metrics: Avoid subjective performance criteria.
- Include Audit Rights: Allow for independent verification of performance metrics.
- Consider Security Mechanisms: Use escrow accounts or guarantees to secure payments.
- Plan for Tax Implications: Consult with tax advisors to understand the impact on your financial position.

Frequently Asked Questions (FAQs)
What is the purpose of an earnout arrangement?
An earnout arrangement bridges valuation gaps by tying part of the purchase price to the future performance of the business.
Are earnout arrangements legally enforceable in Australia?
Yes, provided they comply with Australian contract law principles and are clearly drafted.
How are earnout payments taxed in Australia?
Earnout payments are generally treated as part of the capital proceeds for the sale of the business under Australian tax law, subject to specific rules.
What are common disputes in earnout arrangements?
Disputes often arise over the calculation of performance metrics, non-payment, or ambiguities in the agreement.
Can earnout arrangements be used in all business sales?
While common, earnout arrangements may not be suitable for all transactions, particularly where performance metrics are difficult to define or measure.
This article provides a comprehensive overview of earnout arrangements under Australian law. For tailored advice, consult with an experienced business sales and contract lawyer.
About the Author

Farrah Motley
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