Notice Of Assignment Of Debt: How To Draft One In Australia

Buying or selling a business, taking on new financing, or simply cleaning up your accounts receivable can involve one deceptively simple legal step: transferring a debt from one party to another.

If you’re an Australian business owner, this is where sending a notice of assignment of debt becomes important. It’s often the difference between getting paid smoothly and running into delays, confusion, or disputes (especially if the debtor pays the wrong party).

In this guide, we’ll walk you through what a notice of assignment of debt is, when you should use one, how it works under Australian law, what to include, and how to draft a practical version that fits real-world business scenarios.

What Is A Notice Of Assignment Of Debt (And Why Does It Matter)?

A notice of assignment of debt is a written notice to a debtor that the debt they owe has been transferred (assigned) from the original creditor to a new creditor.

In plain English:

• Assignor = the original creditor (the business currently owed money)
• Assignee = the new creditor (the business buying/receiving the debt)
• Debtor = the party who owes the money and must pay

The notice tells the debtor:

• the debt has been assigned to someone else
• from a certain date, payment must be made to the new creditor
• how to pay the new creditor (bank details, reference, etc.)

Is The Notice The Same As The Assignment Agreement?

No. This is a common point of confusion.

• The assignment agreement (sometimes called a deed of assignment or assignment of debt agreement) is the contract between the assignor and assignee.
• The notice of assignment of debt is a separate document given to the debtor, so they know who to pay.

You generally want both in place: one to transfer the right to collect the debt as between assignor and assignee, and one to make sure the debtor is properly informed.

Why Does The Notice Matter In Practice?

Even if an assignment between assignor and assignee is valid, the debtor may be entitled to keep paying the original creditor until they receive notice. That can mean the debtor “discharges” their obligation by paying the old creditor, and the new creditor may need to chase the assignor rather than the debtor.

From a commercial perspective, the notice helps you:

• avoid misdirected payments (debtor pays the old creditor out of habit)
• reduce disputes (“we didn’t know who to pay”)
• speed up collections (clear instructions and a firm effective date)
• protect goodwill (clean communication with customers/clients who are debtors)

When Would Your Business Need A Notice Of Assignment Of Debt?

Assignments happen more often than many small businesses realise. Here are some common scenarios where a notice of assignment of debt is relevant.

1. You’ve Sold Or Purchased A Business (And The Debts Come With It)

If you’re selling a business, you might transfer outstanding receivables to the buyer. If you’re purchasing a business, you might want the ability to collect existing invoices.

In these transactions, you’ll often need both:

• a properly drafted asset sale/transfer document, and
• individual notices sent to each debtor whose debt is being assigned.

2. Invoice Factoring, Receivables Finance Or Funding Arrangements

Some funding structures involve assigning debts or receivables to a financier or special purpose vehicle.

In these cases, the notice is critical because your customers (the debtors) need clarity about where their payments should go.

Depending on your arrangement, you may also want to consider broader security and asset protection steps (for example, a General Security Agreement may come up in some finance arrangements).

3. Internal Restructures (Changing The Entity That Owns The Debt)

If you move contracts or receivables from one entity to another (for example, from a sole trader to a company, or between group companies), an assignment may be required.

This is particularly common when you “level up” your structure and start operating through a company, supported by governance documents like a Company Constitution.

4. Debt Purchases And Collection Arrangements

Some businesses purchase debt portfolios or acquire specific debts as part of a commercial deal.

If you’re the assignee (buyer of the debt), a clear notice to the debtor is a key step in ensuring collections can proceed efficiently and lawfully.

How Does Assignment Of Debt Work Under Australian Law?

Assignment of debt is a well-established concept in Australian contract law. The key idea is that the right to receive payment can be transferred from one party (assignor) to another (assignee).

But there are some practical legal considerations you should understand before you send a notice.

You Can Assign Rights, But Not Always Obligations

In many business contracts, assignment of rights (like the right to be paid) is possible, but assignment of obligations (like the obligation to deliver services) usually requires something different (often a novation).

That distinction matters because:

• a notice of assignment of debt is focused on payment rights
• if you are also transferring ongoing performance obligations, you may need a different legal mechanism

Legal vs equitable assignment (and why notice matters)

In Australia, the rules about what counts as a “legal” assignment (as opposed to an “equitable” assignment) are set out in state and territory legislation (for example, in NSW, Victoria and Queensland there are statutory provisions dealing with assignments of debts and other choses in action).

While the details can vary, a legal assignment commonly requires the assignment to be in writing and the debtor to receive written notice of the assignment. If those requirements aren’t met, the assignment may still operate as an equitable assignment between the assignor and assignee, but the debtor may be entitled to keep paying the assignor until notice is given (and certain procedural/enforcement steps can be more complicated).

Check The Underlying Contract For Restrictions

Before assigning a debt, check whether the original contract/invoice terms include:

• a restriction on assignment (e.g. “no assignment without consent”)
• a requirement to notify the other party in a particular way
• set-off or counterclaim clauses that may affect how much is ultimately payable

It’s also a good time to sanity-check whether your contract terms are properly set up for payment and enforcement. If your debt arises from customer-facing terms, consider whether your Terms of Trade clearly cover invoicing, due dates, interest, recovery costs, and dispute processes.

What Changes For The Debtor Once They Receive Notice?

Once the debtor has been notified that the debt has been assigned, they should pay the assignee in accordance with the notice (and the original contract terms, unless varied).

Importantly, a debtor’s existing defences may still apply. For example, if they dispute the invoice or claim they are entitled to a set-off under the original contract, they may raise that against the assignee too (depending on the circumstances).

This is why it’s important that the assignment agreement between assignor and assignee deals with risk allocation, including what happens if the debt is disputed or partially uncollectable.

What Should A Notice Of Assignment Of Debt Include?

A strong notice of assignment of debt is clear, specific, and practical. It should be easy for the debtor’s accounts team to action immediately.

While there’s no one-size-fits-all format, most notices should cover the following essentials.

Key Details To Include

• Date of the notice
• Debtor’s correct legal name and address (avoid trading name confusion)
• Assignor’s details (original creditor’s name, ABN/ACN if relevant)
• Assignee’s details (new creditor’s name, ABN/ACN if relevant)
• Description of the debt (invoice number(s), contract reference, purchase order, or a clear description)
• Amount outstanding (or a clear way to calculate it, if it varies)
• Effective date of assignment (when the debtor must start paying the assignee)
• Payment instructions (bank account details, payment reference, remittance email)
• Statement that the debt has been assigned and that payment should be made only to the assignee from the effective date
• Point of contact for questions (email/phone)

Optional (But Often Helpful) Extras

• Request for acknowledgement (e.g. debtor signs and returns confirmation)
• Copy invoices attached (or a statement of account)
• Clarification on where disputes should be directed (assignor vs assignee)
• Privacy wording if you are handling personal information in the notice (particularly if the debtor is an individual or sole trader and you include personal contact details)

If your business deals with personal information as part of collections or account administration, it’s worth ensuring your Privacy Policy and internal processes are aligned with how you collect, use and disclose that information.

Common Mistakes We See Small Businesses Make

• Not identifying the correct debtor entity (e.g. invoiced the trading name, but the customer is a company)
• Vague descriptions of the debt (“all amounts owing”) without enough detail to action payment
• No effective date, creating uncertainty about which payments go where
• Incorrect bank details (sounds obvious, but it happens)
• Not checking contract restrictions before assigning

How To Draft A Notice Of Assignment Of Debt (Step-By-Step)

Drafting a notice of assignment of debt is usually straightforward, but you want to treat it like any other important business communication: accurate, consistent, and properly documented.

Step 1: Confirm You Actually Have A Valid Assignable Debt

Start with the basics:

• Is there a contract, purchase order, accepted quote, or other legal basis for the debt?
• Is the invoice correctly issued and due?
• Is the amount certain and not subject to an unresolved dispute?

If the debt arose from a quote or informal arrangement, it’s worth double-checking whether the quote and acceptance formed a binding contract (questions like these come up often when businesses rely on short-form documents like emails and purchase orders).

Step 2: Review The Underlying Contract Terms

Look for clauses about:

• assignment
• consent requirements
• notice requirements (email vs post, addresses for notice)
• set-off, variations, and dispute resolution

If your contract terms are silent, that doesn’t automatically mean you can ignore best practice. Clear written processes reduce risk and help preserve the commercial relationship with the debtor.

Step 3: Align The Notice With The Assignment Agreement

Your notice should match the key commercial points in the assignment agreement, including:

• the effective date
• which debts are included
• who will manage disputes
• what communications are permitted

This is especially important where there are multiple invoices or where only part of a ledger is assigned.

Step 4: Use Clear Payment Directions (And Keep Them Consistent)

The purpose of the notice is to tell the debtor exactly what to do next.

Make it easy for the debtor’s accounts payable team:

• include bank details and a payment reference
• include a remittance email for proof of payment
• state whether future invoices will come from the assignee or whether existing invoices remain valid

Step 5: Deliver The Notice Properly And Keep Evidence

Send the notice in a way that creates a paper trail. For example:

• email to the debtor’s usual accounts email address (and request a read receipt or acknowledgement), and/or
• post to the registered address, especially if the contract requires written notice by post

Keep a copy of:

• the signed assignment agreement
• the notice sent
• delivery evidence (email trail, registered post receipt)

If your internal processes involve staff sending notices and managing payment communications, make sure your team has clear templates and authority levels. Consistency matters, particularly if more than one person in your business can communicate with debtors.

Step 6: Consider The Flow-On Documents You Might Need

Depending on your business and the relationship, you may also need to update:

• your customer onboarding terms
• your invoicing footer text
• your debt collection workflow
• any finance/security documents

If you have staff involved in credit control or collections, it can also be worth ensuring responsibilities and confidentiality expectations are clear (for example, your Employment Contract can help support that baseline protection).

Template Clauses And A Simple Notice Of Assignment Of Debt Example

Below is a practical example of what a notice of assignment of debt can look like. You should still tailor it to your transaction, your contract terms, and the particular debt being assigned.

Example: Notice Of Assignment Of Debt (Simple Format)

Date:

To:

Notice Of Assignment Of Debt

We refer to the debt owed by you to (ABN/ACN ) in connection with , including the following invoice(s): .

We notify you that, effective from , the above debt has been assigned by to (ABN/ACN ).

From the effective date, all payments in respect of the assigned debt must be made to:

Bank:
BSB:
Account Number:
Reference:

If you have any queries regarding this notice, please contact at or .

Yours sincerely,

Should The Debtor Sign The Notice?

A debtor acknowledgement isn’t always legally required, but it can be commercially helpful.

If you want extra certainty, you can add an acknowledgement section like:

• “Please sign and return a copy of this notice to confirm receipt and acceptance of the updated payment directions.”

Just keep in mind: some larger organisations have strict internal policies and may refuse to “sign” anything, even if they will comply operationally. In that case, an email acknowledgement can still be useful evidence.

Key Takeaways

• A notice of assignment of debt is a written notice to the debtor telling them a debt has been transferred to a new creditor and confirming who must be paid going forward.
• The notice is different from the assignment agreement: the agreement transfers the rights between assignor and assignee, while the notice informs the debtor and reduces payment disputes.
• Common situations where notices are used include business sales, receivables financing, group restructures, and debt purchases.
• A good notice clearly identifies the parties, the debt (invoice numbers/amount), the effective date, and precise payment instructions for the assignee.
• Before assigning a debt, check the underlying contract for assignment restrictions and make sure your commercial terms (like Terms of Trade) support enforceable payment processes.
• Keep evidence of delivery and consider related documents (privacy processes, internal workflows, employment documentation) to support smooth collections.

Important: This article is general information only and doesn’t take into account your specific circumstances. Assignment rules and “legal assignment” requirements can differ depending on the governing law of the contract and the state/territory legislation that applies, so it’s worth getting advice for your situation.

If you’d like help drafting or reviewing a notice of assignment of debt (or the underlying assignment agreement), you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.