Consideration in contracts and when $1 is enough to make a promise binding

Under Australian contract law, a simple contract is not binding merely because both parties have signed it. One of the things the law looks for is consideration, meaning something of legal value exchanged for each promise. The striking part is that the value does not have to match the commercial worth of the deal. A nominal amount such as $1 counted in the contract can sometimes supply the consideration that makes a promise enforceable.

This article explains what consideration is, why a single dollar can satisfy it, and where a "$1 clause" will and will not do the work. It covers:

• what consideration means and the test the courts apply to it
• why consideration must be sufficient but does not need to be adequate
• the situations where nominal consideration fails, including past consideration and pre-existing duties
• when a deed lets the parties avoid the consideration requirement altogether
• how a lawyer helps you structure a deal so enforceability is not left to chance

What consideration actually is

Consideration is the bargained-for exchange that turns a bare promise into a contract. The classic formulation, set out in the English case of Currie v Misa (1875) LR 10 Ex 153, describes it as a right, interest, profit or benefit accruing to one party, or some forbearance, detriment, loss or responsibility given, suffered or undertaken by the other. While that case is English, Australian courts apply the same basic test.

The point of the requirement is to distinguish a promise made as part of a bargain from a promise made as a gift. If your business promises to pay a supplier $1,000, and the supplier promises to deliver goods in return, each promise is consideration for the other. If your cousin promises to give your business $1,000 out of goodwill, with nothing expected in return and no document executed as a deed, the law treats that as a voluntary promise that is generally not enforceable.

For the consideration requirement to be satisfied, the exchange should move from the party seeking to enforce the contract. That means a person who wants to enforce a promise usually has to show they contributed something to the bargain themselves, rather than pointing at value given by a third party.

Consideration must be sufficient but need not be adequate

The core rule, reflected in Australian authority such as Woolworths Ltd v Kelly (1991) 22 NSWLR 189 and the English decision in Chappell & Co Ltd v Nestle Co Ltd [1960] AC 87, is that consideration must be sufficient but does not need to be adequate.

In plain terms, the law asks whether something of legal value has been exchanged, not whether the exchange is commercially fair. This is why nominal consideration is a recognised drafting device. A contract may state that a party grants a right "in consideration of the payment of $1 and other good and valuable consideration" or "in consideration of the sum of $1, receipt of which is acknowledged". The small figure is enough to satisfy the sufficiency test.

Chappell & Co Ltd v Nestle Co Ltd [1960] AC 87 makes the point sharply. Nestle offered a record in exchange for wrappers from bars of chocolate plus a small cash payment. The court held that the chocolate wrappers, which had essentially no commercial value, could still amount to good consideration. The lesson for a business is that the exchange does not have to be economically balanced. What matters is that each party gave something recognised in law.

There is a limit. The consideration still has to be real and identifiable rather than purely imaginary or illusory. A court will not accept a statement that merely asserts value where the document shows no genuine exchange. The nominal clause works best when it is drafted to reflect an actual bargain, even if the money identified is token.

Why past consideration does not count

One of the most common traps is past consideration. Consideration must be given in exchange for the promise. If your business does work first and the other party later promises to pay for it, the promise is not supported by fresh consideration, because the work was done before the promise and not in return for it. A promise to pay for something already completed is generally not enforceable unless the arrangement is documented as a deed or another exception applies.

The same logic extends to promises to do something the promisor is already legally obliged to do. If a contractor is already under a contractual duty to finish a job and the client promises a bonus for doing so, the contractor's performance of the existing duty is usually not treated as new consideration for the extra payment. A business that expects enforceability in these situations should not rely on a token clause alone.

The worked example: assigning software before an investment round

Consider a technology company preparing to close an investment round. The investors want to confirm the company owns its software, so the founders need to assign the source code, documentation and related intellectual property into the company before completion. The deal is agreed commercially. The question is purely legal: the assignment is being signed as a simple contract rather than a deed, so it needs consideration.

On the face of the document, the consideration is not obvious. The assignment is part of a broader investment arrangement, so the value flowing to the founders is found across a suite of documents rather than in the assignment itself. In this situation the solicitor can insert a nominal consideration clause, recording that the assignor transfers the intellectual property in consideration of $1, receipt of which is acknowledged, together with the mutual promises in the agreement.

That clause does not change the commercial deal, and the founders will never be pressed to hand over a literal dollar. But it does something legally useful. It makes the exchange express, satisfying the sufficiency test and removing the argument that the assignment is a mere voluntary promise. It is the difference between a clean ownership position the investor is comfortable with and a technical gap that could slow the round at the wrong moment.

Common misconceptions about the $1 clause

The biggest misconception is that a $1 clause automatically makes any contract enforceable. It does not. It only helps satisfy one element of a binding simple contract. The parties still need a sufficiently certain agreement, the right parties must sign, and the other elements of a contract must be present.

A second misconception is that signing a document on its own is enough. A contract also requires offer and acceptance, an intention to create legal relations and, unless it is a deed, consideration. A signed page is strong evidence, but it is not the whole story.

A third misconception is that the $1 clause can disguise a truly gratuitous promise. If there is no genuine exchange, or the clause is used to give the appearance of a bargain where none exists, it may not save the document. Nominal consideration is a drafting tool for making a real exchange express, not a way to manufacture value where there is none.

Finally, a $1 clause will not cure other defects. It does nothing about uncertainty, lack of authority, defective execution, duress, unconscionable conduct or misleading conduct. In an intellectual property assignment there can be additional requirements around writing, signatures, ownership history, moral rights, confidentiality and future improvements. A token consideration clause only addresses the consideration element.

When a deed lets you skip consideration

Where there is genuinely no exchange of value, a deed is the standard alternative. A deed can be binding without consideration, provided it is properly executed as a deed. It is commonly used for releases, guarantees, settlement arrangements and assignments where consideration is unclear.

For a company, execution is governed by s 127 of the Corporations Act 2001 (Cth), under which a company may execute a document without a common seal if it is signed by two directors, or by a director and the company secretary. To take effect as a deed, the document should also be expressed to be a deed on its face. This is why a business that expects to bind someone without any exchange of value should reach for a deed rather than a contract with a token clause.

Where a lawyer helps

Because each element of a binding contract has to be satisfied and because the drafting choices differ between a simple contract and a deed, this is an area where a commercial lawyer earns their fee quickly. A practitioner looks at the whole transaction rather than a single clause. They work out what value actually flows between the parties, whether the consideration is best recorded as a nominal sum, mutual promises, shares, settlement obligations or investment proceeds, and whether a deed would be safer given the formalities involved.

In an intellectual property assignment or pre-investment restructure, a lawyer also checks the surrounding requirements that a $1 clause cannot fix, such as whether the right people sign, whether the ownership history is clean and whether the wording reflects the actual transaction. The benefit is certainty at the point it matters, usually completion, rather than discovering an enforceability problem after a dispute begins.

The $1 question to ask about your own contract

Before you rely on a nominal consideration clause, ask whether your document reflects a genuine exchange that is simply being made express, or whether you are trying to bind someone with no exchange at all. If the value is really there but hard to see on the page, a carefully drafted $1 clause can bridge the gap. If there is no exchange, a token dollar will not save you, and a properly executed deed is the safer route. That single distinction, between real value made express and no value at all, is the one that decides whether your promise holds up.