When and How to Cancel an ABN You No Longer Need
You must cancel your ABN when you stop trading, and you can do this online through the Australian Taxation Office (ATO). In practice, businesses close for many reasons, including retirement, a sale, or the end of a side hustle.
Regardless of your reason, you should notify the Australian Business Register (ABR) when you cease trading. If you leave your ABN active, you could face fines, confusing tax records, or questions from the tax office later.
But don’t worry, Australian Business Magazine has you covered. We’ll walk you through exactly:
- When to cancel your Australian Business Number (ABN)
- How the online process works
- What to sort out first with the ATO
Stick around, and you’ll close things out properly, with no loose ends chasing you later.
When Should You Cancel Your ABN?
You should cancel your ABN as soon as your business stops operating for good. You may also need to cancel your ABN if your business structure has changed.
A few situations make closing your ABN clear-cut:
- You’ve sold the company and handed over the reins to someone else.
- You’ve retired and closed the business for good.
- You started a side project that didn’t bring in enough work, and you’ve shut it down.
If any of these apply to your current situation, don’t sit on it. The ATO expects a cancellation request within 28 days of trading stopping. And an ABN left active past that point can bring in fines or follow-up letters asking why you’re still registered.
One Brisbane sole trader we spoke to got a please-explain notice two years after closing shop, just because nobody cancelled the number.
Before You Cancel: Sorting Out GST Registration and Tax Returns
Many people expect ABN cancellation to take one step: log in, select the cancellation option and finish.
In practice, you may need to complete several tasks first, like settling tax obligations and updating your business details. And following the right order of process can help you avoid extra paperwork after you’ve closed the business.
So before you start the cancellation procedure, settle your tax position first, then sort out your GST registration.
Lodging Your Final Tax Returns
Lodge any outstanding tax returns before you cancel your ABN. The ATO needs your final activity statements to confirm you’ve reported all business activity up to your closing date.
You still need to submit nil activity statements to prove that you had no business activity or tax to pay for the period. This keeps your lodgments up to date, and if you skip one, the ATO may follow up later and apply penalties for the missed lodgment.
Once you’ve settled your tax obligations, cancel Pay As You Go (PAYG) withholding if you had employees on the books. Business owners often miss this step because they assume ABN cancellation also ends their PAYG withholding registration. But it doesn’t, so contact the ATO to cancel it separately.
What If You’re Still GST Registered?
If you’re registered for GST, make sure your final BAS is lodged, and any outstanding GST is paid before you cancel your ABN. Cancelling the ABN closes your GST registration automatically, but the ATO still needs your final figures submitted first.
Before you cancel, pay off any outstanding tax debts first. But if the paperwork feels like a lot to manage alone, a registered tax agent or Business Activity Statements (BAS) agent can lodge your final statement for you.
Once your debts are settled, you may not need to cancel each registration separately. Cancelling your ABN also cancels your GST, luxury car tax and wine equalisation tax registrations, as well as your fuel tax credit registration.
After you’ve settled your payment obligations, you can cancel your ABN and related registrations together.
How to Cancel an ABN Online Through the ATO
You can cancel your ABN online through the Australian Business Register. The process usually takes less than 15 minutes when you have your details ready. No paper forms to post, waiting weeks for a reply letter, or call centre queue to sit through.
Now, let’s have a look at the cancellation process in detail:
1. What You’ll Need Before You Start
Before you start, set up a digital ID using the myID app, then link it to your ABN through Relationship Authorisation Manager (RAM). You’ll need this to access the online cancellation service.
Once you can log in, check that your postal address on the ABR is current, as the cancellation notice goes there. If the address is outdated, update it in the ABR before submitting your cancellation.
Also, keep your ABN details and recent business records nearby, so you can complete the process without stopping to find them.
2. Steps to Cancel Your Australian Business Number
Once you’ve prepared your details, log in to ABR Online Services with your digital ID and select “Cancel ABN”. Choose “Continue”, then answer the prompts to confirm that your business has stopped trading or has been sold. Then, review your answers before submitting the cancellation request.
After submission, you should receive confirmation once the ABR processes it. If you don’t receive one, check your ABR contact details and follow up with the ABR to confirm you sent a request.
Can’t access ABR Online Services? Then visit the Australian Business Register website for instructions on requesting the NAT 2955 cancellation form by mail.
3. Confirming Your ABN Cancellation
The good news is that cancelling your ABN online starts the process immediately. When you submit, your ABN, GST, luxury car tax, wine equalisation tax, and fuel tax credit registrations all close at once.
After you receive confirmation, check your ABN’s status through ABN Lookup to ensure the cancellation appears. Keep the confirmation with your business records, either in a digital folder or with your paper documents.
Tying Up Loose Ends: What Cancelling an ABN Doesn’t Cover
Cancelling the ABN feels like the finish line, but a few loose ends may show up right after. It’s because ABN cancellation doesn’t automatically cancel your business name, company registration, supplier accounts or licences. So sorting these early saves you an awkward phone call to the ATO months down the track.
The table below breaks down what actually closes with your ABN, and what you’ll need to sort separately:
| What gets cancelled with your ABN | What doesn’t |
|---|---|
| GST, luxury car tax, wine equalisation tax, fuel tax credits | Your registered business name |
| myID authorisation linked to the ABN | ASIC company registration (if applicable) |
| Online access to ABR services under that ABN | Supplier accounts, licences, insurance policies |
Simply put, cancelling your ABN doesn’t cancel a separately registered business name, since that’s a different legal entity registration entirely. So if you’re done with your ABN, cancel the business name separately through the Australian Securities and Investments Commission (ASIC).
Common Mistakes When You Cancel Your ABN
Even when you follow the right steps, timing and small oversights can still cause problems. The mistakes are common, but you can avoid them with a few checks before and after you cancel your ABN.
The slip-ups below cause the most headaches for business owners after cancellation:
- Cancelling Too Early: Cancelling the ABN before lodging final tax returns delays any refund owed to you.
- Reusing the Old Number: Customers and suppliers get confused when the same ABN stays on invoices or a website after cancellation.
- Skipping the Follow-Up: Forgetting to update licences, employee records, or supplier details once you closed the business.
- Assuming Too Much: Other registrations, like your business structure details with ASIC, don’t close automatically alongside the ABN.
Quick Tip: Keep your business records for five years after you cancel, regardless of a sole trader setup or a registered company.
For context, the ATO may count the five years from when you created the record or completed the transaction, whichever comes later. This means paperwork for a sale completed shortly before closure may need to stay on file beyond your ABN cancellation date.
Wrapping Up Without the Loose Ends
During ABN Cancellation, timing often causes more confusion than the paperwork. Settle your tax and GST obligations first, then submit your cancellation through the ABR. With those details ready, you can complete the process in one sitting.
Most follow-up letters and awkward ATO calls happen from rushing that order. So sort your final lodgments, double-check your details on the register, and you’ll sidestep the headache entirely.
If you’re closing, selling, or restructuring a business, there’s more worth reading before you make your next move. Australian Business Magazine has you covered.
