How Much Does an ABN Cost? ($0 — and Who Charges You Anyway)

An ABN costs nothing: registration through the Australian Business Register (ABR) is free, your number never expires, and there's no renewal fee — ever. The ABR is run by the ATO and, in its own words, "does not impose a fee for applying for an ABN online or by paper application". Anyone charging you for one is either a middleman selling a form the government gives away, or a scammer.

The short answer: $0, from the government, for life

Every step of the ABN lifecycle is free when you deal with the ABR directly:

What you're doing	Cost	Where
Applying for a new ABN	$0	abr.gov.au or register.business.gov.au
Updating your details (address, activity, contact)	$0	abr.gov.au
Cancelling your ABN when you stop trading	$0	abr.gov.au
Reapplying for or reactivating a cancelled ABN	$0	abr.gov.au
"Renewing" your ABN	Doesn't exist	—

There's no annual charge, no certificate to buy, and a second ABN for a company or trust you start later is free too. Most online applicants have their 11-digit number in about 15 minutes.

Why "ABN registration services" charge for a free form

Search "register ABN" and the top of the page is often ads for private websites with official-sounding names, coat-of-arms-style logos and reassuring .com.au addresses. Typical prices for a sole-trader ABN run from about $45 to $100 (as at September 2026), more once GST or a business name is bundled in. What you're actually buying:

• Data entry. They ask the same questions the ABR asks, then lodge the same form. There's no fast lane: unverifiable details land in the same manual review queue either way.
• A layer between you and the ABR. Some of these sites collect your TFN, date of birth and identity details on a page that isn't government-run. That's a lot of trust to extend to a business you found through an ad.

Legitimate operators lodge through a registered tax or BAS agent — only registered agents can lawfully charge for tax agent services — so if you're tempted, at least check the name on the Tax Practitioners Board register first.

When paying might make sense

Almost never for the ABN itself. The genuine exceptions are when an accountant is setting up a company or trust for you and the ABN is one line in a bigger job covering structure advice and ASIC paperwork, or when your application has gone to manual review and you'd rather your tax agent handle the back-and-forth. Either way you're paying a professional you'd have chosen anyway, not an anonymous website.

The fake "ABN renewal" letters

Once you have an ABN, your business name, state and postcode become public on ABN Lookup — and the mail starts: letters and emails styled as invoices, complete with reference numbers and due dates, demanding a fee for "ABN renewal" or an "ABN certificate". Two facts make you bulletproof:

1. An ABN never expires. There's nothing to renew, so every "ABN renewal" demand is misleading by definition. Bin it.
2. The only recurring fee anywhere near your ABN is a business name renewal, and it comes from ASIC — $47 for one year or $108 for three (as at September 2026). ASIC itself warns about third-party firms sending unsolicited renewal notices with a "service fee" stacked on top: you don't have to use them, genuine ASIC emails end in @asic.gov.au, and ASIC Connect shows what's actually due.

If you've received one, check your ABN status free on ABN Lookup, report it to Scamwatch, and call your bank if money has already gone. The ABR does cancel ABNs that look inactive, but it never invoices you to do it — if you're still trading, you simply reapply, free.

What does cost money around an ABN

The ABN is free, but the things people register alongside it aren't always. Here's the honest list (as at September 2026):

Item	Cost	Notes
ABN	$0	One per entity, no renewal
GST registration	$0	Compulsory once GST turnover reaches $75,000; you then lodge BAS
Business name (ASIC)	$47 for 1 year / $108 for 3 years	Only if you trade under a name that isn't your own; renewals cost the same
Company registration (ASIC)	$636 one-off, then $342 annual review	Only if you choose a Pty Ltd structure
Trust deed	Varies by provider	Solicitor or online deed fee, plus stamp duty in some states
Accountant or tax agent	Their fee	Worth it for structure advice; not needed for the ABN form

Trading as a sole trader under your own name? Your total government cost to start is $0; a business name takes it to $47. A company changes the picture: our company setup costs guide breaks down the ASIC fees and what accountants charge, and the family trust setup costs guide does the same for trusts.

GST registration is free, but it commits you to lodging a business activity statement every quarter or month. Below the $75,000 threshold it's optional — read the BAS and GST guide before you tick that box.

How to get your ABN free in about 15 minutes

1. Confirm you're entitled. You need to be carrying on, or starting, an enterprise — genuinely running a business, not working as an employee under a "contractor" label.
2. Gather your details. Your TFN, business structure, a plain description of what you'll do, business and postal addresses, and your start date. Applying without a TFN almost guarantees manual review.
3. Go to abr.gov.au — or register.business.gov.au to add a business name or GST in the same pass. Neither asks for a card unless you're paying ASIC's business name fee.
4. Answer honestly and submit. If your details verify automatically, your ABN appears on screen. If not, the ABR aims to review within 20 business days and may ask for documents. Don't lodge a second application while you wait.
5. Put it to work. Add the ABN to your invoices (without it, other businesses generally have to withhold 47% of your payments) and connect it to your accounting software.

The full walkthrough, including what triggers a review, is in our step-by-step ABN registration guide. Starting out on your own? How to become a sole trader covers everything else you need on day one.

Key takeaways

• An ABN costs $0 from the Australian Business Register — to apply, update, cancel or reapply — and it never expires, so there's no renewal fee.
• Paid "ABN registration services" charge roughly $45 to $100 to lodge the same free form; they're no faster and no more likely to be approved.
• Any invoice for an "ABN renewal" is a scam or a misleading private service. The only genuine recurring fee is a business name renewal from ASIC: $47 a year or $108 for three (as at September 2026).
• The real costs sit around the ABN, not in it: business name ($47/$108), company registration ($636 plus a $342 annual review), or a trust deed.
• GST registration is free but brings BAS obligations — optional under $75,000 turnover, compulsory above it.
• Do it yourself at abr.gov.au in about 15 minutes; pay an accountant for structure advice, not form-filling.

Where to get help

• Australian Business Register — apply for, update or cancel an ABN, free
• ABN Lookup — check any ABN's status, including your own
• Business Registration Service — ABN, business name and GST in one application
• ASIC — current business name and company fees, and warnings on unsolicited renewal notices
• Tax Practitioners Board register — check whether a paid service is a registered agent
• Scamwatch (ACCC) — report fake renewal letters and lookalike sites
• Your accountant — for structure advice before you register, especially if a company or trust is on the table