Garage Invoice Template - Australia

GST applies to both parts and labor at the standard 10% rate in Australia. Many invoices itemize parts and labor separately, calculating GST on the combined subtotal rather than each line item. This approach clarifies what the customer is paying for—some prefer seeing parts marked at cost plus margin, with labor listed separately. Ensure your invoice clearly shows the GST amount on the final total; this transparency builds customer trust and simplifies your accounting when reconciling with the ATO.

Yes, including the vehicle registration number and Vehicle Identification Number (VIN) significantly improves professionalism and helps with dispute resolution. These details create a clear audit trail, particularly useful if customers question what work was completed or if warranty claims arise later. Many Australian garages also include the service date, odometer reading, and the technician's name—these elements reduce confusion and demonstrate thoroughness. For fleet customers, this detail is essential for maintenance tracking and compliance documentation.

Diagnostic charges should be clearly stated upfront—either on a quote before diagnostics begin or prominently on the invoice if diagnosed without prior agreement. In Australia, diagnostic time is billable labor just like any repair work, so itemize it as a separate line item showing hours and rate. If the customer approves repairs, many garages credit the diagnostic fee against the repair total, but this should be agreed in advance. Transparency here prevents payment disputes and builds customer confidence that you're charging fairly for expertise.

A quote (or estimate) is a non-binding proposal provided before work begins; an invoice is a demand for payment issued after work is completed. Australian tax law and consumer protection standards expect quotes to include an expiry date and clear terms about what's included. Once work commences and you want to charge for time spent (particularly diagnostics), you may need to transition to an invoice or obtain explicit customer authorization. Using the garage invoice template for both documents—clearly labeled as Quote or Invoice—ensures consistency and protects both parties.

Absolutely. Warranty details should be itemized on the invoice—either as part of the service description or in a separate line. Australian consumer law expects clear disclosure of any warranty or guarantee period, so document whether parts carry a warranty, labor is guaranteed for a set period, and what the customer should do if issues arise. Including your contact details and warranty claim process directly on the invoice reduces customer confusion later and demonstrates professionalism. This detail also protects your business by establishing what was promised.

Parts should be listed separately from labor, showing the item description, quantity, unit cost, and total. Australian business practice typically marks up parts between 30–50% to cover storage, handling, and warranty overhead—this is standard across the industry and customers expect it. Your garage invoice template should make this distinction clear: parts under one section, labor hours under another, both subject to GST. Transparency about markup builds trust; hiding it behind inflated prices damages relationships and invites disputes.

Your Australian Business Number (ABN) is mandatory on all invoices if you're registered for GST, along with your business name, address, and contact details. These details establish legitimacy and make it easy for customers to verify your business. If you're a sole trader, your full name should also appear; if you're a Pty Ltd company, the company name and ACN (Australian Company Number) are required instead of a personal ABN. Including this information prominently on every invoice—header or footer—ensures compliance with ATO requirements and professional presentation standards.

Clearly label these as Customer-Supplied Parts or specify the supplier name—this avoids confusion about warranty responsibility and parts sourcing. If you're installing a part the customer provided, you should still invoice the installation labor, showing the part quantity and cost as zero (or with a note no charge). This protects you by documenting that you didn't source the part. For specialist suppliers like panel beaters or radiator specialists, invoice their work separately or include a line showing the third-party service and total cost, ensuring your invoice remains the complete record of all work performed.