What is an assignment of contract?

Claudia AinsleyWritten byClaudia Ainsley
Reviewed byMatt Leeburn
Updated 26 Aug 2026

An assignment of contract is the transfer of one party's rights under a contract, such as the right to be paid, to a third party, without transferring the assignor's obligations.

Also known as: assignment of rights, transfer of contractual rights, deed of assignment

Key points

  • The assignee steps into the assignor's shoes to receive payment or performance, but the original parties stay bound by their obligations.
  • Selling receivables through factoring or invoice discounting is a common use of assignment in business finance.
  • Check the contract first: an anti-assignment clause or a consent clause can make an assignment ineffective or a breach.
  • The debtor keeps any set-offs and defences it had against the assignor, and can keep paying the assignor until it receives notice.
  • Register on the PPSR: a transfer of receivables counts as a security interest even on an outright sale, which protects priority.

How an assignment works

When you can and cannot assign

Registration, tax and stamp duty

Example

Not to be confused with

Novation
a novation replaces one party with a new one, transfers rights and obligations together, needs every party's consent and creates a new contract; an assignment transfers rights only
Factoring
factoring is the finance product where a business sells its invoices; the assignment of those receivables is the legal transfer that makes it work

Frequently asked questions

Can I assign a contract without consent?

It depends on the contract. If there is an absolute prohibition on assignment, assigning may breach the contract or be void. If the clause only requires consent, get it in writing; many commercial contracts say consent cannot be unreasonably withheld, but that varies. Contracts for personal services are usually not assignable at all.

What is the difference between assignment and novation?

Assignment transfers rights only, such as the right to be paid, and does not need the counterparty's consent unless the contract requires it, although notice is needed to redirect payment. Novation replaces one party with another, transfers rights and obligations together, needs every party's consent and creates a new contract.

Do I need a deed of assignment?

Not always. A deed strengthens enforceability, avoids arguments about consideration for a legal assignment and is common for high-value or complex transfers. For a straightforward sale of receivables a written assignment agreement may be enough. Either way, identify the rights clearly and send the obligor a notice of assignment.

What happens to set-offs and counterclaims after an assignment?

They survive. The debtor can raise against the assignee any set-off, counterclaim or defence it had against the assignor, which can reduce what the assignee actually recovers. An assignee should ask about known disputes, and may want the assignor to obtain releases or account for them.

Is an assignment taxable?

It can be. Selling receivables or assigning contract rights may have GST and income tax consequences, and state or territory stamp duty can apply to assignments or deeds. The treatment depends on the nature of the transfer, so check the ATO's guidance and speak with your accountant before you sign.

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Sources

This article is general information only and is not financial advice.