Family Trust Tax Rates in Australia Explained

Family trusts are one of the most flexible structures your clients can use. The rules around who's taxed, at what rate, and when can save a family thousands of dollars in tax, or lead to a top-rate assessment that could have been avoided.

For accountants, that's the difference between a smooth lodgement and a stressful one. Once you're clear on how trust income is taxed and what the ATO's looking for, the rest comes down to process.

And, getting family trust tax rates right matters more than ever, with the ATO paying close attention to how trust income is allocated and documented. The right tax software keeps the records, calculations, and lodgements in order so nothing slips through at the worst possible moment.

What is a family trust?

A family trust is a discretionary trust that holds assets for a family's benefit, with a trustee who decides how income and capital get shared each year. It's commonly used for asset protection, investment, and estate planning.

A trust isn't a separate legal entity; it's a relationship. But the ATO still treats it as a taxpayer, so it has its own tax file number and lodges its own return.

What sets a family trust apart from a fixed or unit trust is discretion. The trustee decides each year how much each beneficiary gets, rather than following shares set in advance. Three roles make it work:

• Trustee: Runs the trust and carries its tax and reporting obligations.
• Beneficiaries: The family members who can receive income or capital.
• Appointor: Holds the power to appoint or remove the trustee.

These rules are set out in a legal document called the trust deed. Family trusts often hold assets like property, shares, businesses, and business premises.

How are family trusts taxed in Australia?

Family trusts are taxed as flow-through structures, so the trust's net income is taxed in the beneficiaries' hands at their own marginal rates, not at a flat trust rate. Each beneficiary's assessed on the share they're 'presently entitled' to at the end of the financial year.

That's why timing and documentation matter so much for family trust tax rates. If income isn't distributed, or no beneficiary's presently entitled to it, the trustee is taxed instead, usually at the top marginal rate of 45%.

In practice, the taxation of a family trust each year depends on:

• The trust's net income for the year
• How that income is distributed under the trust deed
• Each beneficiary's presently entitled share
• Any amount the trustee is assessed on directly

Clear records make this far easier to manage, and good tax preparation tools help accountants track distributions and prepare the trust return accurately.

What happens if the family trust isn’t distributed?

If a family trust's income isn't distributed, the trustee's taxed on the undistributed amount, usually at the top marginal rate of 45%. Income that might've been taxed at a beneficiary's lower rate ends up taxed at the highest rate instead.

The fix is simple. Trustees should make and document a distribution resolution before 30 June each year, spelling out how the income's allocated. Leave it late, or skip it, and the trustee is exposed to a bigger tax bill and to questions from the ATO, so it's one deadline worth protecting for every trust client.

ATO compliance for family trusts in 2026

ATO compliance for family trusts in 2026 is all about how distributions are made and documented, with section 100A reimbursement agreements drawing the most attention. If you advise trust clients, these are the points to watch:

• Section 100A reimbursement agreements: If a beneficiary's made presently entitled to income but the benefit ends up with someone else, the ATO can treat it as a reimbursement agreement and tax the trustee at the top rate.
• Documentation requirements: Distributions need proper records behind them, including the trust deed, financial statements, and evidence of entitlements.
• Distribution resolutions: They should be valid, made before year-end, and consistent with the deed.
• Family trust elections: Where one's in place, distributions outside the family group attract family trust distribution tax, so they're worth reviewing.

Responsibilities involved in a family trust

For accountants, managing a family trust well means staying on top of the trust's reporting obligations, lodging accurately and on time, keeping clean financial records, and meeting every deadline through the year. The responsibilities sit with both the trustee and the beneficiaries, and each has a distinct role.

Trustee responsibilities

The trustee registers the trust for a tax file number, and an Australian Business Number too if the trust runs a business, and must lodge a trust tax return with the ATO regardless of the trust's net income. If any income is left undistributed, the trustee receives a separate assessment and is taxed on that share at the highest marginal tax rate, which is a key reason resolutions are made before year-end. The trustee also has to withhold tax where a beneficiary is a minor or a non-resident. Where a company acts as trustee, its own corporation tax position is assessed separately from the trust.

Beneficiary responsibilities

A beneficiary is taxed on the share of the trust's net income they are presently entitled to, meaning the amount they can demand for that financial year, and they include it in their individual tax return. Depending on the size of that income, they may also pay tax through the year under the pay-as-you-go instalment system, so it pays to plan ahead of the end of financial year. Where the trust has held an asset for at least 12 months, the 50% capital gains tax discount on any gain can flow through to beneficiaries with the right entitlement. For how these entitlements are treated, see section 100A of the Income Tax Assessment Act 1936.

The benefits of a family trust

A family trust can offer real advantages for families and business owners who want flexibility and protection around their assets. The main benefits include:

• Income distribution flexibility: The trustee can decide each year how income is shared among beneficiaries, which allows tax to be spread across people on different marginal rates within the rules.
• Asset protection: Because assets are held by the trustee rather than individuals, they can be better shielded from personal creditors or legal claims, depending on the circumstances.
• Succession planning: Control of the trust can pass to the next generation through the appointor and trustee roles, without the assets themselves changing hands.
• Estate planning opportunities: A trust can hold assets outside an individual's personal estate, which can make passing wealth to family more orderly.
• Investment ownership: A trust can hold property, shares, and other investments in one structure, with income flowing to beneficiaries.

Potential drawbacks of a family trust

A family trust is not the right fit for everyone, and the benefits come with ongoing cost and complexity. The main drawbacks include:

• Setup costs: Establishing a trust involves legal fees to prepare the deed and, where a company acts as trustee, the cost of setting up that company.
• Annual tax returns: The trust must lodge its own return every year, regardless of how much income it earns.
• Ongoing accounting fees: Preparing financial statements, resolutions, and lodgements adds to the yearly cost of running the trust.
• Compliance obligations: Trustees must keep records, make valid resolutions on time, and meet ATO requirements, which takes ongoing attention.
• Complex tax rules: Trust taxation, including section 100A and distribution rules, is detailed, so most trusts need professional advice to stay compliant.

Let Intuit help you this tax season

Family trusts give your clients a flexible way to hold assets and share income, but that flexibility comes with real responsibility. Get a handle on family trust tax rates and the right systems, and you'll keep clients compliant and free of nasty year-end surprises. 

The right tools make that work lighter. The Intuit Accountant Suite pulls client management, tax preparation, and lodgement together, so you can prepare and lodge a tax return in Australia with less manual handling and a clearer view of every client.

See how QuickBooks can support your practice this tax season, and put it to work with your trust clients.