Mechanic Invoice Template - Australia

Many Australian mechanics show both the hourly rate and total labour hours for transparency, helping customers understand the time investment. Breaking down labour by service type (e.g., "Engine diagnostics - 1 hour" vs "Brake replacement - 2 hours") makes the invoice clearer and helps justify charges. This approach reduces customer disputes and demonstrates professionalism. Some mechanics use flat-rate labour for routine services while itemizing complex diagnostic work. Choose whichever method aligns with your pricing model, but consistency across invoices builds customer trust and simplifies your bookkeeping.

GST must be shown separately on Australian invoices unless you're not GST-registered. Include GST at 10% on the total of labour and parts—it cannot be hidden in quoted prices. Always clearly label "GST" with the amount as a separate line item before the final total. Customers expect to see this breakdown and may question invoices that don't itemize GST, especially for larger repairs. If your business is below the GST registration threshold, you can operate without showing GST, but many customers prefer working with registered businesses.

Yes, you can charge for diagnostics even if the customer declines repairs—this is standard industry practice in Australia. Diagnostic fees compensate you for time, equipment use, and expertise. Clearly state the diagnostic cost before starting work or include it as an itemized line on the invoice with the findings. Some mechanics offer to credit the diagnostic fee if the customer proceeds with repairs, which builds goodwill. Always communicate upfront whether diagnostics are charged separately or included in repair costs to avoid disputes.

Australian mechanics commonly add a markup on supplied parts, typically ranging from 15–50% depending on the part type and competition. This markup must be shown transparently on the invoice. You can either list the part cost and markup separately or show only the final part price—both approaches are acceptable. However, transparency builds trust; some customers appreciate seeing the cost breakdown. Include the part description and quantity to justify charges. Avoid marking up parts excessively; competitive pricing retains customers and encourages them to use your service rather than seeking external suppliers.

Warranty or guarantee information can be noted on the invoice itself or included as standard terms. Many Australian mechanics add a warranty statement such as "12-month warranty on parts" or "Parts covered for 12 months from invoice date" at the bottom of the invoice. This clarifies what's covered and protects both you and the customer. If specific work carries a limited warranty (e.g., brake work covered for 6 months), note it against that line item. Digital invoices can include a terms section at the bottom, making warranty coverage immediately clear and reducing future disputes.

Breaking down labour by service type is generally preferable as it shows customers exactly what work consumed time. Instead of "Labour: 3 hours @ $90/hour," itemize as "Engine diagnostics: 1 hour," "Brake replacement: 1.5 hours," and "Wheel alignment: 0.5 hours." This transparency justifies labour charges and helps customers understand value. However, some mechanics use flat-rate labour for routine services (e.g., "Oil change labour: $50" as a package). Consistency matters—choose one method and apply it across all invoices. Itemized labour also simplifies warranty claims and future maintenance conversations with customers.

If parts are backordered, don't invoice for them until they arrive and are installed—this avoids customer confusion and payment disputes. Create a separate invoice or invoice addendum once the parts are received and the work is complete. Alternatively, invoice for work completed (labour and installed parts) and create a follow-up invoice for additional parts once they're available. Clearly communicate the backorder situation to the customer verbally or by email first. Australian Consumer Law expects clear pricing, so adding parts retroactively to an invoice can appear deceptive. Transparency prevents disputes and maintains customer trust.

Offer multiple payment methods to accommodate customer preferences: bank transfer (most common in Australia), credit/debit card, EFTPOS, and cash. Include your payment details prominently on the invoice—BSB, account number, or card payment link. Specify payment terms such as "Due on receipt" or "Due within 7 days" for invoice clarity. For regular fleet customers, establish ongoing terms such as "Net 30" (payment due within 30 days). Digital payment links can speed up payment processing. Clear payment instructions reduce payment delays and administrative follow-up, improving cash flow for your business.