Skip to content

Is a Memorandum of Understanding Legally Binding?

A memorandum of understanding (MOU), also referred to as a letter of intent, heads of agreement or term sheet, can be an extremely useful commercial tool. Parties use MOUs to quickly and inexpensively set out the commercial terms of a transaction. Typically, businesses utilise MOUs ahead of entering into a formal contract to gain traction during the negotiation stage. However, is a MOU legally binding? In this article, we outline some indicators that your MOU is legally binding.

Front page of publication
Directors' Duties Complete Guide

If you are a company director, complying with directors’ duties are core to adhering to corporate governance laws.
This guide will help you understand the directors’ duties that apply to you within the Australian corporate law framework.

Download Now

Is it a Final Agreement?

Firstly, a court will consider whether the parties have actually come to a final agreement. Often, parties use an MOU when they have commenced a commercial relationship but are still negotiating specific aspects of it.

If it is clear from the document that the parties are still negotiating, an MOU is probably not legally binding. Phrases such as “subject to further negotiation” will likely indicate that the parties have not come to a final agreement. Therefore, you should consider whether your MOU indicates that you have reached an agreement or that negotiations are still ongoing.

Is it a Complete Agreement?

To be legally enforceable, the MOU must contain all the essential terms of the agreement. Often, MOUs are not a complete agreement. Parties can leave several essential terms out because they remain undecided on them.

Essential terms are the terms that parties must finalise before a court can enforce the agreement. For example, in an agreement between a gym and a client, the parties must agree to the time frame of the contract before the agreement is binding. However, deciding on the brand of the gym equipment is not necessary to enforce the agreement.

Accordingly, consider whether you have finalised the essential aspects of your agreement. Ask yourself whether enough information is present to hold the parties to their promises.

Continue reading this article below the form
Loading form

Was There an Exchange of Promises?

For the agreement to be legally binding, each party has to promise something of value to the other party in exchange for something else. For example, in an agreement for the sale of a car, the buyer promises money, and, in exchange, the seller promises the car.

Often, MOUs simply outline the common goals and expectations of the parties. They often use language that indicates discretion of performance, such as “Party A may” rather than “Party A will”. When the language suggests that a party can choose whether they hold up their end of the bargain, the MOU is not enforceable. Therefore, consider what the parties have promised each other and how certain those promises are.

Do You Intend to Be Legally Bound?

For the MOU to be binding, it must suggest that the parties intend to be legally accountable for their promises. To determine whether this is the case, consider the consequences of a breach.

If there is a lot at stake, it is likely that the parties intend to receive legal protection. In addition, look for clauses that explicitly state whether the parties intend for the law to bind them. Some MOUs expressly include clauses along the lines of “the parties do not intend to be legally bound by the above terms”.

MOUs often fall under the category of preliminary agreements or “agreements to agree”. There are three categories of intention concerning preliminary agreements, where the parties:

  1. have come to a complete agreement and intend to be bound immediately, but want to rewrite the terms in a detailed document;
  2. have come to a complete agreement but do not intend to perform the agreement until they write a formal document; and
  3. do not intend to be bound by the agreement unless they write a contract.

The first two categories indicate an intention to be legally bound by the terms of the agreement. If the MOU falls into the third category, the law will not bind the parties until there is a formal contract.

Key Takeaways

MOUs and contracts are both tools to map out a commercial relationship between parties. MOUs do so in general and often incomplete terms, suggesting the parties do not intend for the law to bind them. However, when an MOU contains all the elements required for a contract, it will be legally binding, regardless of the title of the document.  

If you need help creating or enforcing an MOU, our experienced contract lawyers can assist as part of our LegalVision membership. For a low monthly fee, you will have unlimited access to lawyers to answer your questions and draft and review your documents. Call us today on 1300 544 755 or visit our membership page.

Register for our free webinars

Franchisor Compliance Update: Code Obligations from November 2025

Online
Stay compliant with the new franchising updates from November 2025. Register for our free webinar.
Register Now

Avoiding NDIS Pitfalls: Key Breaches and How to Prevent Them

Online
Understand NDIS pitfalls and reduce the risk of breaches affecting your business. Register for our free webinar.
Register Now

Demystifying M&A: What Every Business Owner Should Know

Online
Understand the essentials of mergers and acquisitions and protect your business value. Register for our free webinar.
Register Now

Social Media Compliance: Safeguard Your Brand and Avoid Common Pitfalls

Online
Avoid legal pitfalls in social media marketing and safeguard your brand. Register for our free webinar.
Register Now
See more webinars >
Eugenia Munoz

Eugenia Munoz

Read all articles by Eugenia

About LegalVision

LegalVision is an innovative commercial law firm that provides businesses with affordable, unlimited and ongoing legal assistance through our membership. We operate in Australia, the United Kingdom and New Zealand.

Learn more

We’re an award-winning law firm

  • Award

    2025 Future of Legal Services Innovation Finalist - Legal Innovation Awards

  • Award

    2025 Employer of Choice - Australasian Lawyer

  • Award

    2024 Law Company of the Year Finalist - The Lawyer Awards

  • Award

    2024 Law Firm of the Year Finalist - Modern Law Private Client Awards

  • Award

    2022 Law Firm of the Year - Australasian Law Awards