How to Invoice as a Builder in Australia

What Should Go on a Builder's Invoice

A builder's invoice typically references the job or site address, the stage of work it covers — for example, 'Progress Claim 2 – Frame Stage' — and a description that ties back to the contract or scope of works. Break out labour, materials, and any subcontractor costs as separate line items so the client (and their financier, if there is one) can see exactly what each progress claim covers.

GST for Builders

Most building businesses are well over the $75,000 annual turnover threshold that generally triggers mandatory GST registration, so registration is almost always required. Once registered, you charge 10% GST and must issue a tax invoice showing your ABN and the GST amount (or a note that the price includes GST) for any sale over $82.50. This is general information rather than tax advice — check the specifics with your accountant or the ATO.

ABN and Contract Compliance

Your ABN needs to appear on every invoice and progress claim — it's expected under standard building contracts (including HIA and Master Builders templates) and avoids clients withholding tax from payments over $75 when an ABN isn't provided. Keeping this consistent across quotes, contracts, and invoices also makes your paperwork easier to reconcile at tax time.

Progress Payments, Variations & Retention

Most building work is invoiced in stages tied to the contract — a deposit, then progress claims at agreed milestones like slab, frame, lock-up, and fit-out, rather than one invoice at the end. Variations to the original scope are best invoiced separately from the main contract so there's a clear record of what changed and why, and if the contract includes a retention amount held until completion or the end of a defects liability period, it's worth noting this clearly on the relevant invoice.

Getting Paid on Bigger Jobs

Progress claims fund the next stage of materials and subcontractors, so following them up promptly matters more on a build than almost any other trade. Send each progress claim as soon as the milestone is reached, keep clear records of what's been invoiced and paid against the contract, and don't let a late payment on one stage delay ordering for the next.

How Invogo Helps Builders Invoice Faster

Invogo lets you create GST-ready, ABN-verified progress claim invoices tied to each stage of a job, keep a running record of what's been invoiced and paid on a build, and send professional invoices straight from your phone or desktop. The free tier covers up to 5 invoices or quotes a month, so you can try it on your next project before deciding if you need unlimited invoicing.