Recurring Invoices — How to Set Up and Manage Them

When to use recurring invoices

Recurring invoices are appropriate whenever you provide a regular, ongoing service to the same client under an established agreement. Common use cases include:

Monthly consulting or advisory retainers
Regular maintenance contracts (HVAC servicing, IT support, cleaning)
Software subscriptions
Property management fees
Accounting and bookkeeping engagements
Security monitoring and alarm services

The key requirement is a documented agreement that sets out the service, the fee, the frequency and the cancellation terms. Without a clear agreement, disputes about what was agreed are much harder to resolve.

What to include on a recurring invoice

A recurring invoice must meet the same ATO requirements as any other tax invoice. In addition, include:

The service period covered (e.g. "July 2026 — 1 to 31 July")
A reference to the retainer or service agreement
The invoice number in your sequence
The due date explicitly stated
Your payment details (BSB, account number, or payment link)

See the full Australian tax invoice requirements for the mandatory fields. Use our free invoice generator to create a professional recurring invoice.

Invoice numbering sequences

Good invoice numbering is essential for record-keeping and professional presentation. Best practice for recurring invoices:

Sequential by client: INV-ACME-2026-001, INV-ACME-2026-002. Makes it easy to track all invoices for a specific client. Good for businesses with a small number of recurring clients.
Sequential across all clients: INV-2026-001, INV-2026-002 (or reset each year). Simpler to manage. Most accounting software uses this approach. The year prefix helps identify the period at a glance.
Date-based: INV-20260701-001. Includes the date in the number. Can be useful but makes numbers longer. Only use if your accounting system supports it natively.

The most important rule: never reuse invoice numbers. Duplicate numbers cause reconciliation problems and can create GST issues.

Invoice frequency options

Weekly: Appropriate for short-term projects or contractors billing for time worked each week. Issue every Monday (or Friday) for the prior week. High-frequency invoicing improves cash flow but increases administrative load.
Fortnightly: A reasonable middle ground — less frequent than weekly but faster cash flow than monthly. Common for smaller retainers and service contracts.
Monthly: The most common frequency for retainers and service contracts. Issue on a consistent date each month — the 1st or the last business day. Monthly aligns with most clients' payment cycles.
Quarterly or annually: Used for annual software licences, insurance premiums and some maintenance agreements. Less frequent invoicing means larger individual amounts — ensure payment is received before services continue.

How accounting software handles recurring invoices

Popular accounting platforms used by Australian businesses include Xero, MYOB and QuickBooks. All three support recurring invoice templates that automatically generate invoices on a set schedule and send them to the client. Features typically include:

Setting a template with your standard line items and amounts
Choosing the frequency (weekly, fortnightly, monthly)
Automatic delivery by email to the client on the scheduled date
Automatic sequential numbering
Integration with payment gateways for one-click payment by the client

If you are invoicing a small number of recurring clients without accounting software, use our invoice generator and the guidance in this article to manage the process manually.

Updating details when prices change

When your retainer or service fee increases, do not amend a previously issued invoice. Instead:

Give the client written notice of the new rate (check your agreement for the required notice period — commonly 30 days)
Issue the first invoice at the new rate for the period starting after the effective date
Note on that invoice: "Rate updated to $X per month effective [date] per notice of [date]"

ATO record-keeping for recurring invoices

The ATO requires you to keep records of all tax invoices for at least 5 years from the date the record was prepared or obtained. For recurring invoices, this means retaining every invoice in the series — not just the most recent. Electronic records are acceptable: you do not need to keep paper copies if you have a legible digital version. See the ATO record-keeping requirements guide for detail.

Frequently asked questions

Can I issue invoices in advance?

Yes — you can issue an invoice before the period it covers begins, as long as your agreement with the client allows for this. For example, a monthly retainer invoice issued on 1 July for services to be provided in July is common practice. Note the invoice date, the service period, and that payment is due by your specified date. For GST purposes, the tax point is generally the date the invoice is issued.

How should I number recurring invoices?

Use a consistent numbering sequence that makes it easy to identify the invoice and its order. A common format for recurring clients: INV-[ClientCode]-[Year]-[Sequence], for example INV-ACME-2026-001, INV-ACME-2026-002. Alternatively, use a single sequential series across all clients: INV-2026-001, INV-2026-002. Never reuse invoice numbers. If you use accounting software, the system typically handles numbering automatically.

What if the client disputes a recurring charge?

Respond promptly and in writing. Ask the client to specify the grounds for the dispute in writing. If the charge is correct under your agreement, provide the relevant clause and supporting documentation. If the client claims the agreement has ended, check your records — what notice period was agreed and when was notice given? For ongoing disputes, consider issuing a separate invoice for the undisputed amount while the dispute is resolved. See the invoice disputes guide for the full process.

How do I update the amount on a recurring invoice when prices change?

Issue a new invoice for the updated amount — do not amend a prior invoice that has already been issued and accepted. Give the client reasonable notice of a price increase (check what your agreement requires — commonly 30 days). The notice should be in writing and reference the clause that allows for price adjustments. Your first invoice at the new rate should clearly note 'New rate effective [date] per our notice of [date]'.