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Binding against non-binding agreements

A binding agreement is one a court will enforce because the parties intended it, exchanged something of value and set out terms certain enough to act on. A non-binding document records a position without that intention. The label at the top is evidence of which it is, and it is not the deciding factor.

People assume the words non binding at the top of a page settle the question. They help, and a document whose contents read like promises will be read as promises.

Indunil Asanka · Co-founder

5 min read · Published 12 September 2026

What each side of the line looks like
Signal	Points to binding	Points to non binding
Language	Will, must, agrees to, shall	Intends, anticipates, expects, aims to
Terms	Complete enough to perform	Key items left to be agreed
Price	A number, or a stated mechanism	Indicative, approximate, to be discussed
Conduct after signing	Both sides performing	Both sides continuing to negotiate
Express statement	Silent, or says the parties are bound	Says plainly which clauses bind and which do not
Formality	Signed, sometimes witnessed or sealed	Initialled, or exchanged by email

Intention is judged objectively

The question is not what either party privately meant but what a reasonable person would conclude from the words and the conduct. That is why a founder who insists they never meant to commit can still be bound, and why a document headed heads of terms can create obligations its author did not intend. Between businesses, an intention to be bound is presumed, so the party arguing that a signed commercial document meant nothing carries the burden of showing it. Between family members and friends the presumption reverses. The practical consequence is that commercial parties should assume anything they sign is enforceable unless the document says otherwise clearly and its contents match.

Subject to contract, and what it buys

The phrase signals that the parties do not intend to be bound until a formal document is executed, and it is effective if used consistently. It fails when the parties keep negotiating, drop the phrase halfway through, and start performing, at which point a court may find they abandoned the qualification. In property transactions the phrase is standard and understood. In commercial negotiations it is used loosely, appearing on the first email and nowhere afterwards. Where the intention is genuine, mark every document in the chain, keep marking it, and do not begin performance until the formal agreement is signed, because performance is the strongest evidence available that the parties considered themselves bound.

Marking binding clauses inside a non binding document

Most pre contract documents need a small enforceable core: confidentiality, exclusivity, costs, governing law. The clean method is a single clause near the front stating that clauses X to Y are legally binding and the remainder is a statement of intention only, with the binding clauses grouped together rather than scattered. Two mistakes recur. Placing the statement at the very end, where a reader who has already formed an impression will not revisit it. And leaving a substantive commercial obligation, such as a commitment to fund something, inside the binding group by accident because it happened to sit in the same numbered range.

Certainty, the element people forget

Even where both sides plainly intended to be bound, an agreement can fail because its terms are too vague to enforce. An agreement to agree is the classic example: a promise to negotiate a price in good faith at a later date gives a court nothing to enforce. The remedy is a mechanism rather than a promise: a formula, an index, a named valuer, a default position if the parties cannot agree. Any of those converts an unenforceable intention into a workable term. This matters most in long agreements with future price reviews, which are frequently drafted as if the parties will always be on good terms.

Reliance, when a non binding document still bites

A document that creates no contract can still produce liability through other routes. Estoppel can prevent a party from departing from an assumption they encouraged the other to act on, where doing so would be unfair and the other party has suffered detriment. Misleading conduct legislation applies to statements made in trade or commerce regardless of whether a contract formed. And confidentiality obligations can arise from the circumstances even without a clause. So a document marked non binding limits contractual exposure and does not create a general immunity for what was said and done around it.

Writing so the answer is obvious

The best documents leave nobody guessing. Say in one sentence whether the parties intend to be bound. Use the matching language throughout, so a non binding document says intends and an enforceable one says agrees. Name the document that will follow, if one will. State when the current document ceases to have effect. And put a date on it. None of this is legal drafting so much as ordinary clarity, and it removes almost all of the argument, which is the point: the cases that reach a court are overwhelmingly ones where the document was ambiguous rather than ones where the law was unclear.

Questions people ask

Does writing non binding at the top make it non binding?

It is strong evidence and it is not conclusive. A document labelled non binding whose clauses read as firm promises, and which both parties then perform, can be found to be a contract. The label works when the contents support it, which means matching the language and leaving genuinely open items open.

Can part of an agreement be binding?

Yes, and it is the normal arrangement in pre contract documents. Confidentiality, exclusivity and costs clauses are usually binding while the commercial terms are not. Say which is which in an express clause, group the binding provisions together, and check that nothing substantive has drifted into the wrong group.

Is a verbal agreement binding?

Often yes, if the four elements are present. Some contracts must be in writing by statute, including many land transactions and, in various jurisdictions, guarantees and certain consumer credit contracts. Outside those, the difficulty with a verbal contract is proving its terms rather than its existence.

What does an agreement to agree mean?

A promise to reach agreement later, which is generally unenforceable because there is nothing certain for a court to enforce. Replace it with a mechanism: a formula, an index, an independent expert, or a default that applies if no agreement is reached. That keeps the flexibility and removes the fatal uncertainty.

Does an email exchange create a binding agreement?

It can, and frequently does. Electronic transactions legislation makes clear that a contract is not invalid merely because it was formed electronically, and a name typed at the foot of an email can constitute a signature where that was the intention. Treat email negotiations with the same care as a signed document.

How do I make sure something is binding?

Put it in writing, use committing language, make sure each side is giving something, state the terms with enough precision that a stranger could perform them, sign it, and date it. Where one side is giving nothing, execute it as a deed. Those steps remove every one of the arguments described above.

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Sources

Written and checked by the OneCraft team. Last checked 12 September 2026.