Setting clear payment terms on your invoices is one of the most effective things you can do to improve your cash flow as a freelancer or small business owner in Australia. Yet most invoices either skip this entirely or use vague language that leaves clients confused about when payment is actually due.

Payment terms define when and how your client is expected to pay your invoice. Getting them right can be the difference between a healthy cash flow and chasing unpaid invoices for months. This guide covers the most common payment terms used in Australia, how to add them to your invoices, and what to do when clients pay late.

For guidance on invoicing fundamentals as a self-employed person, see our step-by-step guide to invoicing as a sole trader in Australia.

What are invoice payment terms?

Invoice payment terms are the conditions you set for when and how a client should pay you. They typically include:

The number of days the client has to pay (e.g., 14 days, 30 days)
The accepted payment methods (bank transfer, credit card, etc.)
Any early payment discounts or late payment penalties

Common payment terms used in Australia

Here are the most frequently used payment term abbreviations and what they mean:

Net 7 — Payment due within 7 days of the invoice date. Ideal for small, one-off jobs or clients with a history of slow payment.
Net 14 — Payment due within 14 days. The most common standard for freelancers and sole traders in Australia. Short enough to maintain cash flow, long enough to be reasonable.
Net 30 — Payment due within 30 days. Standard in corporate and government procurement. Expect larger businesses to request this.
Net 60 / Net 90 — Used primarily in large B2B contracts. Generally unfavourable for sole traders and small businesses — try to negotiate shorter terms.
Due on Receipt — Payment expected immediately. Only practical for point-of-sale transactions or trusted repeat clients.
EOM (End of Month) — Payment due at the end of the calendar month in which the invoice was issued. Common in some industries but can mean waiting nearly 60 days if you invoice early in the month.

What payment terms should you use?

For most Australian freelancers and sole traders, Net 14 is the sweet spot. It is short enough to keep your cash flow healthy, yet reasonable enough that most clients will not push back. If a client insists on longer terms, consider whether you can charge slightly more to compensate for the wait, or require a deposit upfront.

Research from Xero and MYOB consistently shows that invoices with shorter payment terms — and those that are sent the same day work is completed — are paid significantly faster than invoices with vague or no terms.

How to write payment terms on your invoice

Payment terms should appear clearly on every invoice. You can include them in the notes section or dedicate a specific field to them. Common formats:

"Payment due within 14 days of invoice date"
"Please pay by [specific date, e.g., 4 July 2026]"
"Net 30 — due [date]"
"Payment due on receipt"

Including a specific due date alongside the terms (e.g., "Payment terms: Net 14. Due date: 4 July 2026") makes it even clearer for the client and reduces disputes.

Can you charge late payment fees in Australia?

Yes — but only if you have agreed to this with your client in advance. Late payment fees are not automatically enforceable. To charge them legally, you need to:

Include the late fee terms in your contract or engagement letter, or
State the late fee clearly on the invoice itself, and
Ensure the client agreed to these terms before you started work.

A typical late payment fee is 1.5% to 2% per month on the outstanding balance, or a fixed dollar amount (e.g., $50 per week overdue). The ACCC and ASIC both advise that fees must be a genuine reflection of the cost of late payment — excessive penalty clauses may not be enforceable.

What to do when an invoice is overdue

Even with clear payment terms, some invoices will go unpaid. Here is a practical escalation approach:

Day 1 past due: Send a polite reminder email. Keep it professional — late payment is often accidental. Reference the invoice number and due date.
Day 7 past due: Follow up again, this time by phone. Confirm the invoice was received and ask if there is an issue with the payment.
Day 14 past due: Send a formal written notice. Mention your late payment terms if applicable and state a final payment deadline.
Day 30+ past due: Consider using a debt collection service, engaging a solicitor, or pursuing the matter through the relevant state small claims tribunal. For amounts under $20,000, the ACCC small business resources and state tribunals (e.g., NCAT in NSW, VCAT in Victoria, QCAT in Queensland) can help resolve payment disputes cost-effectively.

Tips for getting invoices paid faster

Invoice immediately: Send your invoice the day you complete the work. The longer you wait, the longer the payment timeline stretches.
Use a specific due date: "Due 4 July 2026" is more actionable than "Net 30".
Offer multiple payment methods: The easier you make it to pay, the faster clients pay. Include BSB and account, and consider accepting PayPal or Stripe.
Request a deposit for large jobs: A 30–50% upfront deposit protects your cash flow and filters out low-quality clients.
Send a reminder before the due date: A friendly reminder 3 days before the due date is one of the highest-impact things you can do to reduce late payments.

Invoice Payment Terms Guide for Australian Businesses