Discretionary Trust 30% Minimum Tax and MTAS Reporting in Australia: An Accountant's 2026 Guide

Australian discretionary trusts are facing their most significant tax reform in decades. From 1 July 2026, the ATO''s Modernisation of Tax Administration Systems (MTAS) program introduces sweeping changes to trust reporting, including pre-fill services and new return labels that will fundamentally change how trust distributions are processed. From 1 July 2028, a 30% minimum tax on discretionary trusts will apply at the trustee level. For trustees and their accountants, the time to plan is now — not in 2027 or 2028.

Understanding the Discretionary Trust Landscape in 2026

Discretionary trusts — also known as family trusts — have long been a cornerstone of Australian tax planning. They offer flexibility in distributing income to beneficiaries in lower tax brackets, asset protection, and estate planning benefits. However, this flexibility has also attracted sustained ATO scrutiny, particularly around arrangements that the ATO views as primarily tax-driven rather than commercially motivated.

The 2026 environment brings two distinct but related challenges for discretionary trust operators. First, the MTAS program is transforming how trust tax returns are lodged and how distribution data flows to beneficiaries. Second, the federal government''s announcement of a 30% minimum tax on discretionary trusts from 2028 is forcing trustees to reconsider whether their current structure remains fit for purpose.

An experienced accountant who specialises in trust taxation is essential for navigating both challenges simultaneously — particularly given the interaction between the new reporting requirements, Section 100A compliance, and the upcoming structural reforms.

MTAS Trust Reporting Changes from 1 July 2026

The ATO''s MTAS program introduces significant changes to trust tax return lodgement and beneficiary reporting, effective for the 2025-26 income year and beyond.

Pre-fill Services for Trust Distributions

From 1 July 2026, the ATO will introduce pre-fill services for trust distributions. Data from lodged trust tax returns will automatically populate in the individual tax returns of beneficiaries. This creates a sequential dependency: beneficiaries must wait for the trust return to be processed before they can finalise their own returns.

For accountants managing multiple trust clients and their beneficiaries, this change requires a fundamental shift in workflow. Trust financial statements and returns must be prepared and lodged earlier in the tax season to avoid cascading delays for individual beneficiaries.

New Reporting Labels

Trust tax returns for the 2025-26 income year include three new labels that improve reporting granularity and give the ATO greater visibility into trust income streams.

• Label B1 — Non-primary production managed investment scheme amount. This captures income from managed investment schemes that is not related to primary production activities.
• Label U2 — Franked distribution related to investments amount. This separates franked distributions arising from investment activities from other trust income.
• Label H1 — Other assessable foreign source income from a financial investment amount. This captures foreign income from financial investments that was previously reported under broader categories.

Enhanced Pre-lodgement Validations

The ATO is implementing stronger pre-lodgement checks to identify mathematical errors, inconsistencies in distribution components, and missing beneficiary information before the return is submitted. Returns that fail these validations will be rejected, requiring correction before lodgement can proceed.

Accountants should review their trust return preparation processes to ensure all distribution components are correctly categorised and all beneficiary details are complete and accurate before lodgement.

The 30% Minimum Tax on Discretionary Trusts from 2028

The most significant structural change is the federal government''s announcement of a 30% minimum tax on discretionary trusts, effective from 1 July 2028. This tax will apply at the trustee level, meaning the trustee — rather than individual beneficiaries — will be assessed on trust income at a minimum rate of 30%.

Non-corporate beneficiaries who are presently entitled to trust income will be eligible to claim a non-refundable income tax credit for the tax paid by the trustee. This credit mechanism is designed to prevent double taxation, but its practical operation will depend on the beneficiary''s marginal tax rate and the composition of the trust''s income.

To assist businesses and families in adjusting to this reform, the government will introduce a time-limited three-year restructure rollover beginning 1 July 2027. This rollover will allow trustees to transfer assets out of discretionary trusts to other entities — such as companies or unit trusts — without triggering immediate income tax consequences. Accountants are already advising clients to begin modelling restructure scenarios well in advance of the 2027 rollover window.

Section 100A and Unpaid Present Entitlements

Section 100A of the Income Tax Assessment Act 1936 remains a primary focus of ATO compliance activity in 2026. It applies to reimbursement agreements where a beneficiary is made presently entitled to trust income, but the economic benefit is diverted to another party — typically a lower-taxed entity — resulting in a reduced overall tax liability.

If Section 100A applies, the trustee may be assessed at the top marginal tax rate of 47% on the relevant amount, regardless of the beneficiary''s actual tax rate. The ATO has explicitly flagged the reporting of unpaid present entitlements (UPEs) as a critical compliance area for Tax Time 2026.

Trustees are advised to ensure that distribution resolutions are backed by genuine commercial substance, that UPEs are clearly documented in working papers, and that the rationale for all distributions is recorded contemporaneously. The ATO continues to rely on PCG 2022/2 when reviewing distribution patterns, and accountants should ensure their clients'' arrangements are consistent with this guidance.

Common Mistakes Trustees and Accountants Must Avoid

• Delaying trust return lodgement — Under the new MTAS pre-fill system, late trust returns cascade into delays for all beneficiaries. Accountants should prioritise trust return preparation in their workflow.
• Failing to document distribution resolutions contemporaneously — The ATO expects distribution resolutions to be made before 30 June each year and documented at the time. Backdated resolutions are a significant compliance risk.
• Ignoring the 2027 restructure rollover window — The three-year rollover window from 1 July 2027 is time-limited. Trustees who delay planning risk missing the opportunity to restructure without immediate tax consequences.
• Overlooking Family Trust Election status — Distributions outside the defined family group can trigger Family Trust Distribution Tax at 47%. Accountants should verify FTE and Interposed Entity Election (IEE) status annually.
• Assuming the credit mechanism eliminates double taxation — The non-refundable credit for the 30% minimum tax will not benefit beneficiaries whose marginal tax rate is below 30%. For low-income beneficiaries, the reform may result in a net tax increase at the trust level with no offsetting benefit.

Australian Regulatory Context

Discretionary trust taxation is governed by the Income Tax Assessment Act 1936 and the Income Tax Assessment Act 1997, administered by the ATO. The ATO''s compliance approach to trust distributions is set out in PCG 2022/2, which provides a risk framework for assessing whether trust distribution arrangements are consistent with the law.

The 30% minimum tax on discretionary trusts was announced as part of the 2026-27 Federal Budget and is subject to legislation being passed by Parliament. Accountants should monitor the progress of the enabling legislation and advise clients accordingly, as the final design of the tax may differ from the announcement.

The Tax Practitioners Board (TPB) registers and regulates tax agents and BAS agents in Australia. Accountants providing tax advice on trust structures must hold appropriate TPB registration. When engaging an accountant for trust restructure advice, verify their registration at the TPB register and confirm they have specific experience in trust taxation.

Questions to Ask Your Accountant

1. How will the MTAS pre-fill changes affect the timing of my trust return lodgement and my beneficiaries'''' individual returns? — Your accountant should have a clear workflow plan for the new sequential dependency.
2. Are my current distribution resolutions compliant with Section 100A and PCG 2022/2? — This should be reviewed annually, not just when the ATO announces a compliance focus.
3. Should I be modelling a restructure out of my discretionary trust before the 2027 rollover window opens? — Early modelling allows you to compare the tax outcomes of different structures before committing to a course of action.
4. What is the impact of the 30% minimum tax on my beneficiaries'''' effective tax rates? — The answer will depend on each beneficiary''''s marginal rate and the composition of the trust''''s income.
5. Are my Family Trust Elections and Interposed Entity Elections current and correctly documented? — Outdated elections can expose the trust to punitive distribution tax.
6. What stamp duty and GST implications arise from a potential restructure? — The income tax rollover does not automatically extend to other taxes.

How MyMoney® Can Help

The combination of MTAS reporting changes, Section 100A compliance obligations, and the looming 30% minimum tax on discretionary trusts makes 2026 a critical year for trust review and planning. Trustees who act now — with the guidance of a qualified accountant — will be far better positioned than those who wait until the reforms take effect.

MyMoney® connects Australian trustees and business owners with CPA Australia and Chartered Accountants ANZ members who specialise in trust taxation, restructuring, and ATO compliance. Whether you need a trust distribution review, restructure modelling, or help navigating the new MTAS reporting requirements, the right accountant can protect your position and reduce your long-term tax exposure.

Post a Brief on MyMoney® to receive tailored proposals from qualified accountants experienced in discretionary trust taxation, or Browse Accountants to find a specialist who understands the complexity of your trust structure.