ABN, GST and licences for government tenders

Before a government buyer reads a word of your response, they confirm you are a legitimate, eligible, appropriately licensed business. This check is binary. Get it wrong and the quality of your bid is irrelevant, because it will not be assessed.

Here is what is actually required, what buyers verify, and how long each item takes to put in place.

Do you need an ABN to bid for government work?

Effectively yes. An Australian Business Number is the identifier government uses to confirm you exist as a business, and tender portals require it at registration. Without an ABN you cannot register on AusTender or most state portals, so you cannot submit at all.

Beyond registration, there is a practical tax consequence: where a supplier does not quote an ABN, the payer is generally required to withhold tax from the payment at the top marginal rate. No government agency wants to administer that, so a valid ABN is treated as a baseline expectation.

An ABN is free to obtain through the Australian Business Register and usually issued quickly where your details are straightforward.

Your ABN must be active and correctly registered

This is where businesses come unstuck. Buyers look your ABN up on the Australian Business Register, and what they see must match what you have submitted.

• Active status. An ABN cancelled for inactivity looks like a business that no longer trades.
• Entity name matching. The legal entity name on the register must match the entity submitting the bid and the entity named on your insurance certificates. Trust structures cause frequent mismatches, because the registered entity may be "The Trustee for X Trust" while your paperwork says "X Pty Ltd".
• Trading names recorded. If you tender under a trading name, it should be registered as a business name against your ABN.
• Current details. Address, contact and ANZSIC industry code should reflect reality.

Look up your own ABN on the register before your next bid and check it against your insurance certificates and licences. Inconsistency between these three is a common and entirely avoidable cause of non-compliance — see insurance requirements for how the entity-name mismatch problem plays out.

GST registration

GST registration is mandatory once your turnover reaches the registration threshold, and government contracts can push you over it quickly. Tender pricing schedules typically require you to state prices excluding GST and confirm your registration status.

Being registered signals established trading, and being unregistered while bidding for a contract clearly above the threshold invites questions. If you expect to exceed the threshold, register before bidding rather than after award.

Trade and contractor licences by state

Licensing is state-based, and this is the requirement most often mismatched to scope. Holding a licence is not sufficient — it must be the correct class for the work described in the tender.

Jurisdiction	Licensing body
New South Wales	NSW Fair Trading — building, plumbing, electrical licences
Queensland	QBCC for building and plumbing; Electrical Safety Office for electrical
Victoria	Victorian Building Authority; Energy Safe Victoria for electrical
Western Australia	Building and Energy within DEMIRS; Building Services Board for builders
South Australia	Consumer and Business Services
Tasmania	Consumer, Building and Occupational Services
Northern Territory	NT Building Practitioners Board
ACT	Access Canberra

Two points worth emphasising. First, Queensland's QBCC licences carry a financial category that caps the contract value you may hold — exceeding it makes you non-compliant regardless of capability, as covered in our Queensland construction tenders guide. Second, cross-border work requires licensing in the state where the work is performed, and mutual recognition arrangements do not always apply cleanly.

Scope-specific accreditations

Beyond the base licence, many tenders require accreditation tied to the particular work:

• Backflow prevention and thermostatic mixing valves — for plumbing in health and education facilities
• Clean Energy Council accreditation — for solar, battery and EV charging installation
• Network service provider accreditation — for electrical work involving distribution connection
• Chemical or pesticide application licensing — for grounds maintenance including weed control
• Arboriculture qualifications — AQF Level 3 or 5 for tree works
• Traffic management accreditation — for roadside and streetscape work
• Asbestos removal licensing — where the scope touches asbestos-containing material

These are frequently the requirements that narrow a field from twenty bidders to four, which makes them worth obtaining strategically rather than reactively.

Personnel screening

Screening applies to your people rather than your business, and each jurisdiction uses a different instrument.

• NSW — Working with Children Check
• Victoria — Working with Children Check
• Queensland — Blue Card
• Tasmania and ACT — Registration to Work with Vulnerable People
• Northern Territory — Ochre Card
• Health, court and correctional facilities — national police checks
• Commonwealth and Defence facilities — security clearances, sometimes requiring Australian citizenship

All of these take processing time and cost money per person, so they belong in your mobilisation planning and your labour cost model, not in a scramble after award.

Prequalification schemes

Prequalification is separate from licensing. Most jurisdictions operate schemes for construction and certain services, assessing your technical capability, financial capacity and management systems. Once prequalified you are eligible to bid within a category and value band.

The critical scheduling point: prequalification takes weeks and generally requires audited financial statements. It cannot be completed inside a tender window. If you intend to bid state agency construction work, apply before you find a tender you want — a theme in our Victorian construction tenders guide.

Panels and standing offers

For many categories, particularly ICT and professional services, the real gate is panel membership rather than licensing. Agencies buy from panel members through limited approaches to market, so non-members never see much of the work. See how to get on a government panel.

A sensible order of operations

1. ABN active, entity and trading names correct on the register
2. GST registration if you meet or expect to meet the threshold
3. Trade or contractor licence in the correct class, in each state you work
4. Insurance at limits matching your target market
5. Scope accreditations relevant to the work you want
6. Personnel screening for the site types you will attend
7. Portal registration — see how to register on AusTender
8. Prequalification and panel applications, started early

Once those are in place you can bid without compliance anxiety. Log each item against its clause reference on every bid using a compliance matrix, and browse live work on our tender feeds — from Queensland to plumbing.

Frequently asked questions

Is an ABN required for a government tender?

In practice yes. Tender portals require an ABN to register, so without one you cannot submit. There is also a withholding tax consequence where a supplier does not quote an ABN, which agencies avoid. An ABN is free and generally issued quickly through the Australian Business Register.

Do I need to be registered for GST to win government work?

Only if your turnover meets the registration threshold, but government contracts often push businesses over it. Pricing schedules require you to state your GST status, and bidding for a contract clearly above the threshold while unregistered tends to prompt questions about readiness.

Does my licence from one state work in another?

Not reliably. Licensing is state-based and you generally need to be licensed where the work is performed. Mutual recognition arrangements exist but do not apply uniformly across trades and classes, so confirm with the relevant state body before bidding interstate work.

How long does prequalification take?

Typically several weeks, and it requires audited financial statements plus evidence of systems and past performance. It cannot be completed within a tender period, which is why it should be obtained in advance of the tenders you intend to pursue rather than in response to one.

Why would a buyer reject a bid over the entity name?

Because the entity submitting the bid must be the entity that holds the insurance, the licence and the ABN. Mismatches — common with trust structures where the register shows "The Trustee for X Trust" — create genuine legal uncertainty about who is contracting, and buyers treat that as non-compliance.