Do Freelancers Need an ABN in Australia?

Working with freelancers can be a smart way to scale your business without committing to permanent headcount. But the admin can feel murky - especially around ABNs, tax withholding and getting your contractor agreements right.

If you’re wondering whether a freelancer needs an ABN before you pay their invoice (and what happens if they don’t have one), you’re in the right place. In this guide, we’ll walk through how ABNs fit into your compliance as a business, the risks of paying invoices without an ABN, and the essential terms your freelancer agreements should include.

Our goal is to help you onboard contractors confidently, reduce risk and keep your processes clean from the start.

Why ABNs Matter When Your Business Engages Freelancers

An Australian Business Number (ABN) helps you identify the contractor you’re dealing with. It also signals that the person is carrying on an enterprise (rather than doing one-off hobby work) and enables GST and other tax settings to be handled correctly.

From your business’ perspective, ABNs matter because they help you to:

• Verify who you’re paying and that they’re set up to invoice as a business.
• Decide whether GST should be charged on their invoices and claimed on your BAS.
• Avoid “no ABN” withholding at the top marginal tax rate, which can apply if an invoice is issued without an ABN and no exemption applies.
• Record-keep and satisfy your tax and supplier due diligence processes.

It also feeds into a bigger question: are you engaging a genuine contractor, or should they actually be treated as an employee? The more formal their business setup, the easier it is to keep the contractor relationship clear (more on classification below).

Do Freelancers Legally Need An ABN In Australia?

There’s no single law that says “every freelancer must have an ABN.” The test is practical: if a person is carrying on an enterprise (that is, they’re in business rather than doing a hobby), they generally should register for an ABN and use it when invoicing.

Common examples of freelancers who should have an ABN include designers, developers, copywriters, marketing consultants, photographers, trades, and coaches providing services to multiple clients for a profit.

Two points to keep in mind:

• Hobby or very occasional activities may not require an ABN, but many “side gigs” quickly cross into business territory. If your freelancer is promoting their services, issuing invoices and seeking repeat work, they’re likely carrying on a business.
• If a freelancer expects their annual turnover to reach the GST threshold, they’ll also need to register for GST. If they’re below the threshold, they can still register, but it’s optional; either way, they’ll need an ABN to issue valid tax invoices.

For background you can point them to, we’ve covered the advantages and disadvantages of having an ABN and what actually counts as a business activity in Australia.

What If A Freelancer Doesn’t Provide An ABN?

This is where your obligations kick in. If a supplier issues an invoice without an ABN and no exemption applies, the ATO requires your business to withhold tax from the payment at the top marginal rate (often called “no ABN withholding”). That’s an administrative headache and can strain the relationship with the contractor.

When you receive an invoice without an ABN, consider these steps:

• Ask for their ABN and a corrected invoice that includes it.
• If they say they’re exempt (for example, because the work is genuinely a hobby or falls under another limited exemption), ask them to provide the relevant details - many businesses use a supplier statement to record this.
• If there’s no valid exemption, you may need to withhold at the prescribed rate from the payment and report it to the ATO.

To help with due diligence, it’s good practice to verify the number on ABN Lookup and keep a record. Here’s a short guide on how to check if an ABN is active.

As part of your onboarding process, build a simple checklist: collect the supplier’s legal name, ABN, bank details, and whether they’re registered for GST. If they’re new to freelancing and unsure about ABNs, share information about why it can be risky to run a business without an ABN.

Practical tip: add a line to your purchase order or contractor pack stating “You must include a valid ABN on your invoices. If no ABN is provided, withholding tax may be deducted as required by law.” This sets expectations early.

Contractor Or Employee? Get The Classification Right

ABNs don’t determine employment status. An individual can have an ABN and still be your employee based on how the relationship operates in practice. Getting this wrong can trigger underpayment claims, superannuation, workers compensation and leave liabilities, as well as penalties.

Key indicators that someone is more likely to be an employee include:

• You control how, when and where the work is done, not just the outcome.
• They work for you regularly and form part of your team, rather than running their own business independently.
• They can’t delegate the work to others, and they don’t bear meaningful financial risk.
• You supply the equipment and set hours and rosters like you do for staff.

Indicators of a genuine contractor include the ability to subcontract, work for multiple clients, set their own hours, use their own tools and insurances, and invoice for results rather than time under day‑to‑day control.

Because this area is nuanced, it’s wise to get tailored guidance - our team regularly helps businesses with employee vs contractor advice to reduce misclassification risk.

Also remember that some contractors may still be entitled to superannuation under the “contract wholly or principally for labour” rules. Payroll and tax settings should be reviewed case by case.

What To Include In Your Freelancer Agreement

A clear written contract is your best protection when engaging freelancers. It sets expectations, assigns responsibility and reduces scope creep. At a minimum, make sure your agreement covers the following.

Scope, Deliverables And Milestones

Define the services, timelines, acceptance criteria and any dependencies. If the job is ongoing, include a straightforward change request process and how additional work will be priced.

Fees, Invoicing And Payment Terms

State whether fees are fixed, hourly, or milestone-based, when invoices will be issued, what a valid invoice must include (such as ABN and GST status), and your payment timeframe. It’s helpful to align this with your finance policies - here’s a quick primer on setting invoice payment terms.

Intellectual Property And Moral Rights

Make sure IP created for your business is assigned to you on payment, or that you receive the required licence if full assignment isn’t appropriate. Address moral rights consents where relevant (for example, in creative work where you may edit or adapt materials).

Confidentiality And Data Handling

Include a robust confidentiality clause so your sensitive information is protected. If you’ll be sharing early-stage ideas or customer data, consider using an NDA before kicking off, and ensure your agreement explains how personal information must be handled.

Liability, Warranties And Indemnities

Allocate risk proportionately. For example, your contractor should warrant that their work won’t infringe third-party IP and that they’ll perform services with due skill and care. Limit liability appropriately and consider a cap tied to fees for the engagement (except for non-excludable liabilities under the Australian Consumer Law).

Insurance And Work Health & Safety

State the insurances you require (e.g. public liability, professional indemnity, workers compensation if applicable) and ask for certificates of currency. If you’d like a refresher on what’s common in the market, we’ve covered whether contractors need insurance in Australia.

Termination And Dispute Resolution

Allow termination for convenience on notice (e.g. 14 days) and immediate termination for material breach, insolvency or misconduct. Add a simple dispute process before legal escalation.

GST, ABN And Tax Responsibilities

Make it explicit that the contractor must quote a valid ABN on invoices, state their GST status clearly, and is responsible for their own tax, superannuation and payroll obligations. Reserve the right to withhold payments as required if no ABN is provided.

If you want a solid starting point, we can prepare a tailored Contractor Agreement that reflects how your business actually works (and scales with your growth).

Frequently Asked Questions From Businesses

Do we have to refuse work if a freelancer doesn’t have an ABN?

Not necessarily, but you take on extra admin and compliance risk. Unless an exemption applies, you may have to withhold tax from the payment. In practice, most businesses require freelancers to obtain an ABN before work starts - it keeps invoicing and GST straightforward.

Should we prefer contractors who operate through a company?

Some freelancers trade as sole traders, others as companies. Either can work. A company structure doesn’t automatically change your obligations, but it can indicate a more established business. Focus on the practical working arrangement and get the contract terms right. If you do deal with a company contractor, ask for their ACN as well as ABN.

Can we require GST registration?

You can require that invoices clearly state the contractor’s GST status. If they’re not registered for GST and not required to be, that’s fine - their invoices should not include GST. If they are registered, ensure you receive valid tax invoices so you can claim input tax credits.

How do we vet a new freelancer quickly?

Adopt a simple onboarding checklist: collect legal name, ABN, address, GST status, bank details, insurance certificates (if required), and a signed contractor agreement. Verify the ABN is active using ABN Lookup - here’s how to check if an ABN is active. For spend or riskier engagements, consider reference checks or a trial milestone before a larger scope.

What about income reported against an ABN?

For finance teams, it’s useful to understand how contractor earnings are tracked and when reporting is required. We’ve explained how businesses can view and verify certain details in our note on how businesses can check ABN income.

Key Takeaways

• Most freelancers operating as a business should have and use an ABN when invoicing; it helps you manage GST, record-keeping and compliance.
• If a contractor invoices without an ABN and no exemption applies, your business may need to withhold tax at the top marginal rate - build this into your onboarding process.
• Classification matters: an ABN doesn’t decide status. Review the working arrangement carefully to avoid misclassifying an employee as a contractor, and seek employee/contractor advice if unsure.
• Use a clear, written Contractor Agreement that covers scope, fees, IP, confidentiality, risk, insurance, termination, GST and ABN responsibilities.
• Tighten your supplier onboarding: collect ABNs up front, verify they’re active, set clean payment terms, and keep copies of certificates and key correspondence.
• Share practical resources with freelancers who are new to business - for example, why running a business without an ABN is risky and the benefits of obtaining an ABN.

If you’d like a consultation on onboarding freelancers and setting up compliant contracts and processes for your business, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.