Bilateral Contract: Meaning and Template (Australia)

Updated on 13 August 2026

"Bilateral contract" is a legal category, not one specific document: it describes any contract where both sides promise to do something — one side's promise to pay, for example, in exchange for the other side's promise to deliver goods or perform a service. That's most contracts. It's the opposite of a unilateral contract, where only one party makes a promise (a reward offer, for instance, which the other side accepts only by actually doing the requested act).

The widely circulated US free version of this document takes the concept query and turns it into one specific, thin sale-of-goods contract with a hard-coded Buyer/Seller structure, no termination or breach remedy beyond the seller withholding delivery, and a malformed interest clause. If you actually need a two-party agreement for a specific purpose — a sale, a service, a barter, a lease — use the specific template for that: it will fit better and this page links to each one below. This page explains the concept and gives a general-purpose two-party agreement for when no more specific template fits.

0 of 11 blanks filled

Tap any highlighted blank in the document below and type straight into it.Free — no sign-up, no watermark

General Agreement

This Agreement is made on between ("Party A") and ("Party B").

1. Subject Matter

This Agreement concerns the following: .

2. Compensation

Party A shall pay Party B by , via .

3. Delivery or Performance

4. Late Payment Interest

Any amount not paid when due shall accrue interest at % per annum from the due date until paid.

5. Breach and Cure

If either party materially breaches this Agreement, the non-breaching party shall give written notice, and the breaching party shall have days to cure the breach.

6. Termination

If a material breach is not cured within the period stated above, the non-breaching party may terminate this Agreement and pursue any remedy available at law, including damages.

7. Force Majeure

Neither party is liable for delay or failure to perform (other than an obligation to pay money already due) caused by an event beyond that party's reasonable control, including acts of God, war, government order, or industrial action.

8. General

This Agreement is governed by the law of , constitutes the entire agreement between the parties, and may be amended only in writing signed by both parties. If any provision is held unenforceable, the remaining provisions remain in effect.

Party A

Date:

Party B

Date:

Bilateral vs. unilateral, in Australian contract law

Australian contract law follows the same common-law tradition as English law on this point: in a bilateral contract, both sides are bound the moment the contract is formed, while in a unilateral contract only one side makes a binding promise, and the other side accepts by performing the requested act rather than by promising anything back. The English case Carlill v Carbolic Smoke Ball Co [1893] 1 QB 256 — an advertised reward for anyone who used a product as directed and still fell ill — remains a standard illustration of a unilateral contract cited in Australian courts and textbooks. Most real-world commercial agreements, including sales, services, leases and employment, are bilateral.

A concept query needs cross-links, not one thin document

Someone searching "bilateral contract" is very often trying to find out what the term means, or looking for a general two-party agreement template because they haven't found the specific one they need yet. This page answers the concept question directly and links to the specific family that actually fits: a sale of goods, a service engagement, a barter, or an amendment to an existing contract — each of those is a bilateral contract in the legal sense, drafted for its actual subject matter rather than left generic.

If you do need a general agreement, it needs real remedies

The free version's only consequence for non-payment is that the seller may withhold delivery — no cure period, no termination right, no damages, and an interest clause with a percent sign and no time period attached to it. The general agreement below fixes that: a stated cure period, a right to terminate for an uncured material breach, and a properly stated interest rate with a clear time basis.

Clause-by-clause guide (general agreement)

Parties and subject matter: Identifies both parties and what the agreement is actually about — described specifically, not left blank.
Compensation: The amount payable, when it's due, and the payment method.
Delivery or performance: When and how the non-monetary side of the exchange is delivered or performed.
Late payment interest: A stated interest rate with a clear annual basis, applied to any payment made after it's due.
Breach and cure: A stated cure period before either party can terminate for the other's breach.
Termination: The right to terminate for an uncured material breach, and what happens to amounts already paid or delivered.
Force majeure: Excuses delay caused by events genuinely beyond a party's control, but not the underlying payment obligation.
General provisions: Entire agreement, severability, amendment in writing, notices, and governing law.

Australian notes

This is a general-purpose agreement, not a substitute for a specific contract type where one exists.

Use the specific template if one fits
A sale of goods, a service agreement, a lease, a barter and an amendment are all bilateral contracts, each with their own standard terms — use the specific family for that subject matter rather than this general agreement whenever one exists.
Check whether the Australian Consumer Law applies
If either party is a consumer, the Australian Consumer Law implies consumer guarantees and restricts certain unfair contract terms that this general commercial-agreement template does not attempt to cover.

How to use this template

Check whether a more specific template fits first. If this is a sale, a service engagement, a lease, or a barter, use that specific template instead — it's drafted for the actual subject matter.
Describe the subject matter clearly. State specifically what each party is agreeing to do — don't leave it as a placeholder.
Set the payment and delivery terms. Enter the amount, due date, payment method, and delivery or performance terms.
Set the cure period and interest rate. Enter how long a party has to cure a breach, and the late-payment interest rate.
Sign and download. Both parties sign, then download a clean Word or PDF file — no sign-up, no watermark.

Frequently asked questions

What is a bilateral contract, in plain terms?

A contract where both sides promise to do something — most contracts are bilateral. It's contrasted with a unilateral contract, where only one side makes a binding promise and the other side accepts by actually performing an act rather than promising anything back.

Is a bilateral contract the same as a mutual contract?

Yes — "bilateral" and "mutual" describe the same idea: both parties have binding obligations to each other under the same contract.

What's an example of a unilateral contract, for comparison?

Carlill v Carbolic Smoke Ball Co [1893] 1 QB 256 is the classic English example, still cited as authority in Australian courts: an advertised reward, accepted not by a promise back but by actually performing the stated conditions.

Do I need this specific template, or a more specific one?

Almost always a more specific one. If you're selling goods, hiring a contractor, leasing property, or bartering, use that specific template — it's drafted for the actual subject matter and legal issues involved. Use this general agreement only when nothing more specific fits.

What happens if one party doesn't pay on time?

Under this template, late-payment interest accrues at the stated rate, and if the non-payment isn't cured within the stated cure period, the other party can terminate the agreement for material breach.

Can this template be used for a consumer contract?

It's written as a general commercial agreement. A consumer contract carries additional protections under the Australian Consumer Law that this general template doesn't include — use a consumer-specific template or advice for that situation.

Related templates

Barter Agreement Template (Australia)

Disclaimer

This template and guide are for general information only and do not constitute legal advice. This is a general-purpose agreement; a more specific template exists for most common transactions and should be used instead where it fits. Confirm whether the Australian Consumer Law applies to your situation before relying on this agreement.