Do Business Trusts Need a TFN in Australia and How to Get One?

Using a trust for your small business can be a smart move - it can help with asset protection, provide flexibility for profit distributions, and support long-term growth plans.

But when it comes to tax and reporting, you’ll quickly encounter an essential piece of the puzzle: the trust Tax File Number (TFN).

In this guide, we’ll explain what a trust TFN is, when you need one, how to apply, and the ongoing obligations to keep your trading trust compliant in Australia. We’ll also walk through common business scenarios that use trusts and the legal documents worth getting right from day one.

Let’s break it down in plain English so you can set up your structure properly and focus on running your business with confidence.

What Is A Trust TFN And Why Does It Matter?

A trust TFN is the unique identifier the Australian Taxation Office (ATO) uses for your trust. If your trust earns income or lodges tax returns, it generally needs its own TFN - separate from the TFN of any individual or company involved.

In practice, you’ll often apply for a TFN at the same time you register the trust for an Australian Business Number (ABN) through the Australian Business Register (ABR). The TFN allows the trustee to lodge the trust’s annual tax return, quote the TFN where required (for example, to investment bodies), and manage ATO interactions specific to that trust.

It’s helpful to think of the trust TFN as part of the trust’s “identity” for tax and reporting. This is different to an ABN, which identifies the trust as a business for GST and business dealings. Many trading trusts will need both.

If you’re still weighing up whether a trust is right for your business, it’s worth understanding the broader trusts in Australia landscape and how trusts compare to other structures.

Do All Trusts Need A TFN In Australia?

Most business trusts that derive income will need a TFN. Here’s how it plays out across common trust types used by small businesses:

• Discretionary (Family) Trusts: Frequently used by family businesses and consultants. If the trust receives income (for example, from a trading business or investments), the trustee will generally need to obtain a TFN and lodge a trust tax return each year.
• Unit Trusts: Common where investors hold fixed “units” (similar to shareholders in a company). A unit trust that carries on a business or earns income will also need its own TFN for tax lodgements and reporting.
• Hybrid Trusts: Combine features of family and unit trusts. If they earn income, expect a TFN requirement as part of annual compliance.
• Special Purpose or Passive Trusts: Even if a trust primarily holds assets (like IP or shares), if there is assessable income (interest, dividends, royalties, rent, etc.), the TFN requirement generally applies.

Importantly, a TFN for the trust is separate from any TFN or ABN that a trustee or beneficiary may have. The trust is its own reporting entity for tax purposes, even though it isn’t a separate legal person like a company.

If you’re still at the planning stage and want the big-picture view, this overview of trust, ABN and TFN requirements sets out how TFNs fit alongside other registration steps.

Step-By-Step: How Do You Apply For A Trust TFN?

The application process is straightforward once your trust has been properly established. Here’s a practical sequence most small businesses follow.

1) Establish The Trust Properly

Before you can apply for registrations, your trust needs to exist and have a trustee appointed. This typically involves executing a trust deed that sets out the trust’s rules and beneficiaries, and formally appointing the trustee (which might be an individual or a company).

Many businesses choose a corporate trustee for extra risk management and clarity - if you need help with the company setup that will act as trustee, our team can assist with company set up and the supporting documents that go with it.

2) Get The Deed And Details Ready

To apply for a TFN (and ABN), you’ll need basic details from the deed and trustee(s), such as trust name, date of establishment, trustee/beneficiary details, and contact information. Keep copies of your signed trust deed and any resolutions handy.

3) Apply For ABN And TFN (Often Together)

You can apply for the trust’s ABN and TFN through the ABR. Many trading trusts need both. During this process you’ll identify the trustee and provide the trust’s details - the ABR shares the necessary information with the ATO for the TFN application.

4) Set Up ATO Online Access And Banking

Once the TFN is issued, set up ATO online services for the trust so you or your tax agent can lodge returns and manage obligations. You’ll typically open a bank account in the trustee’s name “as trustee for” the trust; quoting the TFN can help avoid unnecessary withholding on investment income.

5) Keep Records From Day One

File copies of the trust deed, any variations, trustee resolutions (including yearly income distribution resolutions), and registration confirmations. Strong record-keeping will make annual compliance faster and reduce the chance of issues with distributions or audit queries later.

Common Business Scenarios Using Trusts (And Where TFNs Fit)

Trusts are flexible. Here are common ways small business owners use them - and how TFNs fit the picture.

• Trading Trust With A Corporate Trustee: The trust runs the business (trading in goods/services). The company acts as trustee. The trust requires its own TFN and ABN for business and tax purposes; the company (as trustee) has its own ACN and may also have its own ABN for its separate affairs, if any.
• Unit Trust For Investors: Investors subscribe for units (like shares). The unit trust generally needs a TFN, an ABN if it’s carrying on an enterprise, and clear governance documents. Where there are multiple arms-length investors, a well-drafted Unitholders Agreement often sits alongside the trust deed to manage decision-making and exits.
• Family Trust Holding Shares In Your Trading Company: A discretionary trust may hold the shares in your operating company for asset protection and distribution flexibility. If you adopt this approach, you’ll still need the trust TFN for investment income (like franked dividends). It’s also important the company is properly governed under a Company Constitution and, where there are multiple founders, a Shareholders Agreement.
• Trust As A Holding Vehicle For IP Or Other Assets: Some businesses place IP or key assets in a trust and license them to the operating entity. The trust may still need a TFN where it earns royalties or other income streams.

If your plan involves a trust owning equity, this piece on beneficially holding shares through a trust is a useful read before you finalise your structure.

Compliance: Your Ongoing Obligations After Getting A Trust TFN

Once the trust TFN is in place and you’re up and running, it’s important to stay on top of annual tasks and keep your records clean.

Annual Trust Tax Return

The trustee usually lodges a tax return for the trust each year, reporting income and distributions to beneficiaries. If income is distributed, beneficiaries generally declare their share in their returns. Timing and correct resolutions matter.

Trustee Resolutions Before 30 June

For discretionary trusts, trustee resolutions should be made (and documented) by financial year-end to validly distribute income. Keep those resolutions with your trust records and ensure they align with the trust deed’s rules.

TFN Reporting And Withholding

Where required, ensure TFN quotes are provided to relevant investment bodies to avoid withholding on investment income. If beneficiaries need to provide TFNs for certain reporting, make sure that process is handled securely and in line with your adviser’s guidance.

Record-Keeping, Variations And Notifications

• Maintain copies of the original trust deed and any deed of variation. If changes are needed, have them prepared properly - a formal Deed of Variation helps keep your trust compliant with its own rules.
• If the trustee changes (for example, appointing a new corporate trustee), update the ABR/ATO and your banks, suppliers and other stakeholders promptly.
• Keep minutes and distribution statements tidy - this makes tax time simpler and protects the trust if the ATO asks questions.

Work With Professionals

Trust taxation and distribution mechanics can be technical. Many business owners appoint an accountant or tax agent to manage annual lodgements under the trust’s TFN, while working with commercial lawyers to administer the deed and handle changes at key milestones.

Legal Documents To Put In Place For A Trading Trust

Your TFN and ABN are just the start. Strong documents help your trust operate smoothly and reduce risk as you grow.

• Trust Deed: The foundation document. It sets out the trust’s purpose, beneficiaries, trustee powers and distribution rules. It should be tailored to your business, not a generic template.
• Corporate Trustee Documents: If a company will act as trustee, make sure it has a fit-for-purpose Company Constitution and that appointments, shareholding and director roles are properly documented.
• Shareholders Agreement (Corporate Trustee): Where two or more founders own the corporate trustee, a Shareholders Agreement can cover decision-making, founder exits, restraints and dispute processes.
• Unitholders Agreement (Unit Trust): If you’re using a unit trust with multiple investors, a complementary Unitholders Agreement helps regulate transfers, capital calls and governance beyond the deed.
• Loan Agreement: Intra-group and related party funding is common in trust structures. Use a clear Loan Agreement to formalise amounts, interest (if any) and repayment terms.
• Commercial Contracts: If the trust trades, you’ll likely need customer terms, supply agreements and contractor agreements tailored to your model to manage liability and payment risk.
• Deed Of Variation: As your business evolves, your trust deed may need changes. A formal Deed of Variation ensures amendments are valid and recorded.

Each business is different, so you may not need all of the above on day one. But getting the essentials right early - and building out your documents as you scale - will save headaches later.

Choosing And Setting Up Your Structure: A Quick Recap

If you’re at the decision stage, it helps to map the structure before you register anything:

• Will the trust operate the business, or simply hold assets or shares?
• Who will act as trustee - individuals or a corporation?
• Will there be multiple founders or investors who need governance documents?
• What’s your plan for distributing profits year to year?

With those answers in mind, you can formalise the trust deed, appoint the trustee, and register for the trust TFN (and ABN if required). If you decide a corporate trustee is right for you, we can support you with company set up and the core structure documents so everything fits together cleanly.

Key Takeaways

• A trust TFN is separate from personal or company TFNs and is generally required when a trust earns income or lodges returns in Australia.
• Most trading, unit and family trusts will need both a TFN and (if carrying on an enterprise) an ABN - you can usually apply for them together via the ABR.
• Set up the trust correctly first: execute a tailored deed, appoint the trustee, then register for the TFN and establish ATO access and bank accounts.
• Keep on top of annual compliance, including trust tax returns, beneficiary distribution resolutions and clean record-keeping under the trust’s TFN.
• Support your trust with the right documents - for example, a Company Constitution and Shareholders Agreement for a corporate trustee, an Unitholders Agreement for unit trusts, and a Loan Agreement for related party funding.
• If you’re weighing up structures, review how trusts support asset protection and read up on core trust, ABN and TFN requirements before you register.

If you would like a consultation on setting up or maintaining a trading trust for your small business, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.