What a legally compliant quote must include in Australia

A quote feels like admin, but it is the document that decides who is right when a job goes sideways. Get it clear and you have a record of exactly what you agreed to build and for how much. Leave it vague and you are arguing from memory months later. This is general guidance, not legal advice, but it covers the things a solid Australian trade quote should spell out.

The basics every quote should carry

Whatever the trade, a clear quote should make these obvious at a glance:

• Your business details. Trading name, ABN, and your contact details. If your trade is licensed in your state, put the licence number on the quote too. Customers and regulators expect to see it.
• The customer and the site. Who the quote is for and the address the work happens at.
• A dated quote number. So the quote, any variations, and the final invoice all tie together.
• A clear scope of work. What is included, in plain terms, and just as importantly what is not. Most disputes are about scope, not price.
• The price and whether it includes GST. If you are registered for GST, show a GST-inclusive total and say so. If you are not registered, do not add GST.
• Whether it is a fixed quote or an estimate. Say which. They are treated very differently if there is a dispute.
• Payment terms. Deposit amount, any progress-claim stages, and when the final balance is due.
• An expiry date. Prices move. A quote that is valid for, say, 30 days protects you from being held to an old number after material costs jump.
• Exclusions and assumptions. Things like rock excavation, asbestos, or works requiring council approval. Flag them so a surprise on site is not a surprise on the invoice.

GST and your ABN

If you are registered for GST, consumer prices must be shown GST inclusive, so quote the total the customer actually pays. If you are not registered, you cannot charge GST or show a GST line. Putting your ABN on the quote is good practice and helps the customer (and you) at invoice time. Without a valid ABN on a tax invoice, a business customer may have to withhold tax from your payment.

Fixed quote or estimate: say which

This single word changes your exposure. A fixed quote is a price you commit to for the stated scope. An estimate is a considered guess that can move as the job is revealed. Both are fine, but the customer needs to know which they are getting. If you label something a quote, expect to be held to it for the agreed scope, with anything extra handled as a written variation.

Variations: get them in writing

The single biggest cause of payment fights is extra work that was agreed verbally and then disputed. Before you do work outside the original scope, write down what changed, the new price, and get the customer to accept it. A text or email is enough. The original quote plus a trail of accepted variations is a far stronger position than your word against theirs.

Where the states differ

Consumer protection and the GST rules are national, but residential building and licensing sit with each state and territory. The detail differs, so always check your own state authority. A few examples of the kind of thing that varies:

• New South Wales. Home building work over a set dollar value needs a written contract, and work above a higher threshold needs home building compensation (insurance) cover. Licensed trades must show their licence number. NSW Fair Trading is the authority to check.
• Victoria. Domestic building work above a set value needs a major domestic building contract with required terms, and domestic building insurance applies above a higher threshold. The Victorian Building Authority and Consumer Affairs Victoria set the rules.
• Queensland. Building work above a low threshold generally needs a licensed contractor and, above set values, a written contract on an approved form, with the Queensland Building and Construction Commission (QBCC) overseeing licensing and home warranty cover.

Thresholds and forms change, so treat the above as a prompt to check your state authority rather than a fixed rule. The principle holds everywhere: the bigger the residential job, the more formal the paperwork needs to be.

Make the compliant version the easy version

The reason quotes go out vague is that doing them properly by hand is slow. A quoting tool built for Australian trades carries your ABN, licence and GST settings automatically, forces a clear scope, and keeps the quote, variations and invoice linked. The compliant quote becomes the default, not the extra effort.