Most people who go sole trader do it because they want to get moving fast. Low cost, minimal paperwork, full control. No company structure to maintain, no annual filings with ASIC beyond what is needed.
It is genuinely the simplest way of setting up a business in Australia. The whole registration process can be done online in one to two hours. But simple does not mean there is nothing to understand. Get the setup wrong and you end up with compliance gaps that cost more to fix later than they would have cost to get right from the start.
Here is everything you need to know, in the right order.
What a Sole Trader Actually Is
Before anything else, be clear on what you are signing up for.
A sole trader is an individual running a business. You and the business are legally the same entity. That means:
- You keep all the profits
- You report business income on your personal tax return
- You are personally liable for every business debt
That last point is the one people underestimate. There is no separation between your personal assets and your business. If the business owes money, you owe money. A bank account, a car, savings, all of it is on the table if things go wrong.
For a freelancer, consultant, or someone testing a business idea, this structure makes complete sense. For someone taking on significant contracts or financial risk, a Pty Ltd might be worth considering instead. Worth thinking about before you register rather than after.
Step 1: Make Sure You Have a Tax File Number
Before you register anything, you need a Tax File Number. Most Australians already have one from previous employment or tax returns. Check your myGov account linked to the ATO if you are not sure where yours is.
As a sole trader, you do not need a separate business TFN. Your personal TFN handles both individual and business tax. If you genuinely do not have one, apply through the ATO before you do anything else. It is free and straightforward but needs to be in place before the next steps.
Step 2: Apply for an Australian Business Number
This is the core registration step. Your ABN is an 11-digit number that identifies your business to the government, to clients, and to suppliers. Without one:
- Businesses paying you are required to withhold tax at the highest marginal rate
- You cannot register for GST
- You cannot register a business name
- You cannot legally invoice most clients
ABN registration is free. Apply through the Australian Business Register online. The application takes around ten to twenty minutes if you have everything ready.
What you need to have on hand:
- Your Tax File Number
- Full legal name and date of birth
- Residential address and contact details
- Business start date, which cannot be more than six months in the future
- A description of your business activity
- Expected annual turnover
Most sole traders receive their ABN immediately after submitting the application. In some cases it takes up to 28 days if manual review is required, which typically happens when the ATO needs to verify that you are genuinely carrying on a business.
One thing worth knowing. The ATO can review your ABN entitlement at any time. If they do, you need to be able to demonstrate that you actually began or took genuine steps to begin business activities from the start date you listed. Keep records of client communications, invoices, or any other evidence from early in your business.
Step 3: Register a Business Name If You Need One
You only need to register a business name if you plan to trade under a name that is not your own legal personal name.
If your name is Sarah Chen and you invoice as Sarah Chen, no business name registration is needed. If you want to trade as “Chen Creative” or “Sydney Brand Co,” that name needs to be registered with ASIC.
Business name registration is done through ASIC and costs:
- $45 for one year
- $104 for three years
Before you register, check the ASIC business name register to confirm the name is available. Also check the IP Australia trademark database separately. A name can be available on the ASIC register and still belong to someone else as a registered trademark. Registering a business name does not give you trademark protection. These are two completely different things.
A few naming rules to know:
- The name cannot be identical or too similar to an existing registered name
- Restricted words like “bank,” “trust,” and “government” require special approval
- The name must not be misleading about the nature of your business
Once registered, you must display your business name on invoices, signage, and any official documentation.
The most efficient way to handle all of this is through the Australian Government’s Business Registration Service, which lets you apply for your ABN, register your business name, and set up GST simultaneously in one online form.
Step 4: Register for GST If Required
GST registration is mandatory once your annual turnover reaches AUD 75,000. Register within 21 days of hitting that threshold. If you expect to exceed it from the beginning, register upfront before you start trading.
A few things worth understanding about how the threshold works:
- It is calculated on a rolling 12-month basis, not just by financial year
- Turnover includes all business income before expenses
- If you exceed AUD 75,000 in any consecutive 12-month period, the obligation kicks in regardless of which months those are
Some sole traders register voluntarily below the threshold. Reasons to consider it:
- You can claim GST credits on business purchases
- Clients in B2B settings often expect tax invoices that include GST
- It signals a more established business presence to certain clients and suppliers
Once registered, you charge 10% GST on taxable goods and services, lodge Business Activity Statements with the ATO on a regular basis, and claim back GST you have paid on business expenses. The net effect is that GST is ultimately borne by the end consumer, not your business. But it does affect cash flow timing, so factor that in.
Step 5: Sort Out Any Industry-Specific Licences
Registration with the ATO and ASIC is not always sufficient on its own. Depending on your industry, you may also need:
- Local council permits for certain business activities or premises
- State or territory-specific licences for trades, real estate, healthcare, or financial services
- Federal licences for industries regulated at a national level
The Australian Business Licence and Information Service is the best starting point for checking what applies to your specific business activity and location. Do this before you start trading, not once a client or council raises it.
Step 6: Open a Separate Bank Account
Not a legal requirement for sole traders. But one of the most practically important steps you can take.
Mixing business and personal finances creates real problems. It makes tax time significantly harder, it muddies your records if the ATO ever reviews your returns, and it makes it genuinely difficult to understand how your business is actually performing financially.
Open a separate account as soon as you have your ABN. Keep all business income going in and all business expenses going out through that account. It takes ten minutes to set up and saves hours of untangling later.
Step 7: Understand Your Ongoing Tax Obligations
This is where sole traders sometimes get caught off guard. Registration is the beginning, not the end.
Income tax: Your business income is added to your personal income and taxed at your individual marginal rate. You report it through your annual personal tax return using the Business and Professional Items schedule.
PAYG Instalments: Once your tax bill reaches a certain level, the ATO will move you onto quarterly PAYG instalments. This means you pay estimated tax throughout the year rather than in one lump sum at the end. It is designed to help with cash flow but can surprise people the first time it happens.
Superannuation: You are responsible for your own super as a sole trader. The ATO does not require it, but contributing to super is worth taking seriously from the beginning. It reduces your taxable income and builds something for the future.
If you hire employees: Register for PAYG withholding, contribute to their superannuation at the current rate of 11.5% of ordinary earnings, and ensure WorkCover insurance is in place.
What Sole Trader Registration Does Not Cover
A few things that sit outside this process and often get overlooked:
- Trademark protection: Registering a business name with ASIC does not protect your brand. If the name matters to your business, register it as a trademark through IP Australia separately
- Public liability insurance: Not legally required but strongly recommended, especially if you work with clients on-site or handle physical goods
- Professional indemnity insurance: Worth considering for consultants, advisors, and anyone providing services where a mistake could create client losses
Setting Up a Business in Australia as a Sole Trader
The process itself is genuinely straightforward. An hour or two online, a free ABN application, a business name registration if you need one, and you are operating legally.
What matters beyond registration is staying on top of the tax obligations, keeping clean financial records, and understanding where the structure has limits. Sole trader works well until the liability risk or the compliance complexity outgrows it. Most people know when that point arrives.
At Aadmi, we help people navigate setting up a business in Australia correctly from day one. Whether you are starting as a sole trader or thinking about a more structured approach, we make sure the foundation is solid before you build on it.
It also helps to explore sole trader tax obligations in Australia, ABN registration, GST registration requirements, business name registration ASIC, and small business compliance in Australia as you get started.
FAQs
1. Is registering as a sole trader in Australia free?
ABN registration is free. Business name registration costs $45 for one year or $104 for three years. GST registration is free. The main costs are industry-specific licences if your business activity requires them.
2. Do I need a business name if I trade under my own name?
No. If you invoice and operate under your full legal personal name, no business name registration is required. You only need to register a business name if you trade under anything different.
3. Can a sole trader hire employees?
Yes. Being a sole trader refers to your business structure, not whether you work alone. You can hire staff but you cannot employ yourself. You will need to register for PAYG withholding and pay superannuation for any employees.
4. What is the biggest risk of being a sole trader?
Unlimited personal liability. You and the business are legally the same, which means personal assets can be used to settle business debts. If your business carries significant financial or legal risk, a Pty Ltd structure may offer better protection.
5. How long does ABN registration take?
Most applications are processed immediately online. Some take up to 28 days if the ATO requires manual review to verify genuine business activity.
