How To Find Your ABN On myGov: Step‑By‑Step Guide

When you’re running a small business, your Australian Business Number (ABN) pops up everywhere - invoicing, banking, contracts, supplier onboarding, government forms and even customer checks. The tricky part is that, once you’ve applied for an ABN and the weeks (or years) pass, it’s surprisingly easy to forget where to find it quickly.

If you’ve been searching for something like “how do I find my ABN number on myGov”, you’re not alone. Many business owners assume their ABN is simply “in myGov”, but there are a couple of moving parts (including the ATO’s online services, and how your business access is set up).

This guide walks you through the practical ways to find your ABN using myGov and related ATO tools, plus what to do if your ABN doesn’t appear, your business has multiple entities, or you’re worried your access or details aren’t set up correctly.

What Is An ABN And Why Does It Matter For Small Businesses?

An ABN is an 11-digit identifier used in Australia for businesses and other entities (like companies, sole traders, partnerships and some trusts). In day-to-day operations, your ABN helps:

• Customers and suppliers confirm who they’re dealing with
• You issue compliant invoices and get paid smoothly
• The ATO link your entity to tax and registration obligations (including GST where applicable)
• Other businesses avoid “no ABN withholding” when paying you

It’s worth noting that “your ABN” can get complicated if you operate through different structures. For example, you might have:

• a sole trader ABN for your consultancy work
• a company with its own ABN for your trading business
• a trust with a separate ABN for a specific investment or trading activity

So, when you’re trying to find your ABN in myGov, the key is knowing which entity you’re looking for and ensuring your access is linked to the right ATO profile (and, for many non-sole-trader setups, that you have the right business authorisations in place).

How Do I Find My ABN Number On myGov? (Step-By-Step)

Here’s the most common path: log into myGov, go to the ATO service, and locate your ABN within your business or account details. What you can see will depend on whether you’re a sole trader (using ATO online services via myGov) or accessing an entity like a company, trust or partnership (which often requires Online services for business and the right authorisations).

Step 1: Sign In To myGov

Go to myGov and sign in using your usual login details.

If you don’t have a myGov account yet, you’ll need to create one first. If you do have an account but can’t log in, sort out access first (it’s hard to troubleshoot ABN visibility until you can actually access the ATO service).

Step 2: Link The ATO To Your myGov Account (If It’s Not Already Linked)

From the myGov home screen, you can link services. If the ATO isn’t linked, you’ll need to link it using the identity and security prompts.

If the ATO is already linked, you should see it listed as a connected service.

Step 3: Open The ATO Online Services

Click into the ATO service from your myGov dashboard. This should take you into ATO Online Services (often labelled as Online services for individuals).

This is the key point: myGov is the “front door”, but ABN and registration details are usually shown inside the ATO online services area rather than on the myGov homepage itself.

Step 4: Navigate To Your Business Details Or Profile

Once you’re in the ATO environment, look for sections that relate to your profile and business registrations. Depending on the interface you see, this may be labelled like:

• Profile or Account settings
• Business details
• Registrations
• Australian Business Register details

In this area, you’ll typically find the ABN displayed along with key details like your entity name, trading name (if relevant), business address and registration statuses.

Step 5: Confirm You’re Looking At The Right Entity

If you run more than one business (or you’ve changed structures over time), you may see multiple options. Double-check you’re viewing the correct entity by confirming:

• the legal name (for example, your personal name as a sole trader vs your company name)
• the ABN matches your records (invoices, bank details, contracts)
• the status is current (active)

If your ABN is there, copy it into your business records and store it somewhere easy to access (for example, in your invoicing template and secure internal documentation).

What If My ABN Isn’t Showing In myGov?

If you followed the steps above and still can’t see your ABN, it usually means one of these issues is happening:

• you’re logged into the wrong myGov account (yes, it happens)
• the ATO service isn’t correctly linked
• you don’t have the right access to view business details (common if you’re not set up as the right authorised person for the entity)
• your business is operating through a different entity than you expect (e.g. company ABN vs sole trader ABN)
• your ABN was cancelled (sometimes intentionally, sometimes due to changes or ATO/ABR updates)

Check Whether You’re Searching For An ABN That Doesn’t Exist (Or Is No Longer Active)

A quick reality check can save a lot of time: sometimes the ABN you’re trying to find has been cancelled, or it was never registered in the first place (for example, someone started operating under a business name but never registered for an ABN).

If you’re unsure, you may need to confirm your current structure and registrations. This matters for contracts, invoicing, and even how you present your legal identity to customers.

Confirm Your Access Rights (Especially If Someone Else Set Things Up)

It’s common for a bookkeeper, accountant, previous business partner, or family member to have handled registrations. If your access isn’t set up correctly on the ATO side, your myGov login may not show the business details you expect.

In practice, many businesses (especially companies, trusts and partnerships) manage access through the ATO’s business access systems (for example, Online services for business and the Relationship Authorisation Manager). If you’re not authorised for that entity, you may not be able to see the ABN and registrations even though you can log into myGov.

Check Whether You’re Looking For Your ABN Or Your ACN

Another common mix-up: if you run a company, you’ll have an Australian Company Number (ACN) as well as an ABN. They’re not the same, and they’re used for different purposes.

• ABN: 11 digits, used for tax and business identification
• ACN: 9 digits, used for company identification with ASIC

In many cases, a company’s ABN includes the ACN within it (but you should still treat them as distinct identifiers and use the correct one for the correct form).

Other Quick Ways To Find Your ABN (If You’re In A Hurry)

Even if your goal is specifically finding your ABN via myGov, it’s helpful to have backup methods - especially if you’re trying to meet a deadline (like onboarding with a supplier or issuing an invoice today).

Check Your Past Invoices, Quotes And Purchase Orders

If your invoicing is set up properly, your ABN should appear on your invoices and often your quotes, too. This is one of the quickest ways to retrieve it.

Just make sure you’re looking at a current template. If your structure has changed, your old invoices may show an ABN that no longer matches your current trading entity.

Check Business Registration Documents And Emails

When you register for an ABN, you typically receive confirmation records. Search your email for:

• “ABN”
• “Australian Business Number”
• “Australian Business Register”

If you have a shared inbox for admin, that’s often where these details end up.

Search The Australian Business Register (ABR)

Many businesses can be searched publicly via ABR lookups using your legal name or trading name. This can help you confirm:

• your ABN number
• your ABN status (active/cancelled)
• the entity type

This is also what your customers and suppliers may use to verify you - so it’s worth checking that your details are accurate and consistent with how you trade.

Common ABN Problems For Small Businesses (And How To Avoid Them)

Finding your ABN is one thing. Making sure it’s being used correctly (and matches your legal setup) is another. Here are some common issues we see for small businesses.

Operating Under The Wrong Entity Name

Sometimes a business starts as a side project (sole trader), then grows and becomes a company - but the branding and paperwork don’t catch up. This can create confusion and risk, especially when you sign contracts or issue invoices.

If you’ve changed structures (or you’re not sure which entity is actually contracting with customers), it can be worth getting legal advice so your contracts and business details align with the right entity.

ABN Not Displayed Correctly On Your Website And Documents

Your ABN should be easy to find for customers and suppliers (and should match the entity actually providing the goods or services). Inconsistent details can cause:

• payment delays (accounts teams may refuse to process invoices)
• supplier onboarding issues
• confusion about who the customer is contracting with

This is especially important if you sell online. If you collect personal information through your website (like email addresses for marketing, customer addresses for delivery, or enquiry details), you’ll usually need a Privacy Policy in place that accurately identifies your business entity.

Using Personal Details When You Mean Business Details (And Vice Versa)

Small businesses often blur the lines between personal and business, especially in the early days. But once you’re dealing with contracts, customer complaints, and formal invoicing, those lines matter.

Having the right terms in place can help clarify who’s providing the services and on what terms. For example, many service-based businesses rely on a Service Agreement to clearly set out payment terms, scope, timelines, and liability expectations.

Not Knowing Whether You Need GST Registration (Or Assuming ABN = GST)

Another misconception: having an ABN does not automatically mean you’re registered for GST. GST registration depends on your circumstances (including turnover thresholds and business activities).

If you’re unsure what your tax registrations are, checking your registrations within the ATO online services is the place to start. This article is general information only and isn’t tax advice - if you’re unsure what applies to your situation, check the ATO guidance or speak to your accountant or tax adviser.

Keeping Your ABN Details Organised (So You Don’t Have To Search Again)

Once you’ve located your ABN, it’s worth taking a few minutes to make life easier for “future you”. Consider:

• adding your ABN to your invoice templates, quote templates and email footer
• saving it in a secure internal doc (for example, your “business admin checklist”)
• confirming the ABN shown on your website matches your current legal entity
• making sure your bank account name aligns with the entity that invoices customers

If you have staff or contractors handling admin tasks, it also helps to document who is allowed to issue invoices, sign supplier onboarding forms, and update registrations. This is where the legal setup and the operational setup overlap.

Key Takeaways

• If you’re searching “how do I find my ABN number on myGov”, the ABN is usually found by logging into myGov, opening the ATO service, and checking your profile or registration details (what you can see depends on your access and entity type).
• If your ABN isn’t showing, it’s often an access issue (wrong account, ATO service link, missing business authorisation) or a structure issue (you’re looking for the ABN of a different entity).
• Backup methods include checking past invoices, registration emails, and ABR lookups - which is also helpful for confirming your ABN status is active.
• It’s important that your ABN details match the entity that actually trades, invoices customers, and signs contracts, especially if you’ve changed structures as you grow.
• Once you find your ABN, save it in your internal business systems and make sure it’s consistently displayed across invoices, websites, and key documents.

If you’d like legal help getting your business structure and documents set up properly (so your ABN details, contracts and compliance all match), you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.