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Family trust distributions and Section 100A when someone else gets the benefit

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Navid | Managing Director

06 August 2026

Overview

Before your family trust distributes income, check who will actually use the money. A prior agreement for someone else to benefit can change who pays the tax.

Knowledge

What triggers a Section 100A tax assessment on trust income?

A trustee decides how to distribute trust income under the trust deed. A beneficiary can become entitled to income before cash changes hands. Section 100A can shift the tax to the trustee when an arrangement benefits someone else and has a tax-reduction purpose. An exception covers arrangements made in the course of ordinary family or commercial dealings.

Knowledge

What triggers a Section 100A tax assessment on trust income?

A trustee decides how to distribute trust income under the trust deed. A beneficiary can become entitled to income before cash changes hands. Section 100A can shift the tax to the trustee when an arrangement benefits someone else and has a tax-reduction purpose. An exception covers arrangements made in the course of ordinary family or commercial dealings.

When Section 100A can apply

Your family trust plans to distribute income to an adult daughter. She’ll pay tax on it, but the family has already agreed that the money will go back to her parents for their home loan. That agreement deserves a conversation before the trustee signs. It raises a question that a distribution minute alone can’t answer. Who gets the benefit?

Section 100A deals with certain arrangements known as reimbursement agreements. Broadly, someone becomes entitled to trust income under an arrangement that benefits someone else, and reducing income tax is a purpose of that arrangement. The agreement can be informal. If the section applies, the trustee can generally be assessed on that income at the top marginal rate.

There’s an exception for agreements made in the course of ordinary family or commercial dealings. Being related doesn’t establish the exception on its own. Equally, a delay between a distribution and a cash payment doesn’t settle the matter. The full arrangement, including why the family made it, matters.

Talk through the payment while everyone is at the table

Ask who will control the money, who will bear the tax, whether anyone has agreed to pass on a benefit and what each person understands about their entitlement. Keep the resolution, beneficiary account, bank movements and any loan or gift documents together. The paperwork should reflect the decision the family actually made.

If the proposed beneficiary would be surprised to learn what’s being distributed to them, pause before signing.

Explore family office and tax planning

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Advice for your family starts with understanding your family.

Your trust may support adult children, hold investments or play a part in the family business. Behind each distribution are people with their own needs, expectations and tax positions.

Bon Conseil takes the time to understand what your family wants to achieve and how the money will be used. We review proposed distributions, explain the Section 100A considerations and help you identify the records and conversations needed before the trustee makes a decision.

Let’s talk through the distribution before you sign.

Whether the family’s circumstances have changed or you’d like a clearer explanation of an existing arrangement, we can help you work through it with the people involved.

Talk to Bon Conseil about your family trust. You don’t need to arrive with an agreed distribution plan.

Good advice makes a difference.

From your first tax return to building a business or planning for retirement, Bon Conseil supports individuals, families and businesses at every stage. Our qualified accounting, tax and advisory professionals bring years of experience, specialist knowledge and genuine care to every client relationship.

✔️ Qualified professionals ✔️ Registered expertise ✔️ Australian standards

Our team includes Certified Practising Accountants (CPA), Chartered Accountants Australia and New Zealand (CA ANZ) members and registered tax agents, with relevant ASIC registrations. We work in accordance with applicable Australian laws, regulations and professional standards, giving you confidence in the people looking after your financial affairs.

Explore family office and tax planning

Learn More →

Advice for your family starts with understanding your family.

Your trust may support adult children, hold investments or play a part in the family business. Behind each distribution are people with their own needs, expectations and tax positions.

Bon Conseil takes the time to understand what your family wants to achieve and how the money will be used. We review proposed distributions, explain the Section 100A considerations and help you identify the records and conversations needed before the trustee makes a decision.

Let’s talk through the distribution before you sign.

Whether the family’s circumstances have changed or you’d like a clearer explanation of an existing arrangement, we can help you work through it with the people involved.

Talk to Bon Conseil about your family trust. You don’t need to arrive with an agreed distribution plan.

Good advice makes a difference.

From your first tax return to building a business or planning for retirement, Bon Conseil supports individuals, families and businesses at every stage. Our qualified accounting, tax and advisory professionals bring years of experience, specialist knowledge and genuine care to every client relationship.

✔️ Qualified professionals ✔️ Registered expertise ✔️ Australian standards

Our team includes Certified Practising Accountants (CPA), Chartered Accountants Australia and New Zealand (CA ANZ) members and registered tax agents, with relevant ASIC registrations. We work in accordance with applicable Australian laws, regulations and professional standards, giving you confidence in the people looking after your financial affairs.

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