Preventing S100A: Safeguarding Your Family Trusts

Family trusts are a powerful tool for protecting assets and managing tax obligations, but they also come with regulatory challenges. The Australian Taxation Office (ATO) has increased scrutiny on family trust distributions, particularly under Section 100A of the Income Tax Assessment Act. Understanding how to properly manage and safeguard your family trusts is crucial to ensuring compliance and maximizing benefits.

What is a Family Trust?

A family trust is a discretionary trust set up to manage a family’s assets or business. It provides tax planning advantages, asset protection, and succession planning benefits. Generally, it is established by a family member to benefit individuals within the ‘family group.’

Key Benefits of a Family Trust:

  • Asset Protection: Helps safeguard family assets from creditors or legal claims.
  • Tax Efficiency: Enables distribution of income to beneficiaries with lower marginal tax rates.
  • Estate Planning: Facilitates the smooth transition of wealth across generations.
  • Flexibility: The trustee has discretion in distributing income to beneficiaries.

The Role of the Trustee and Trust Deed

  • The Trustee manages the trust and has discretion over income distribution.
  • The Trust Deed sets out the terms and conditions under which the trust operates, including the definition of beneficiaries and the rules for distributing income.

Family Trust Elections and Tax Compliance

A Family Trust Election (FTE) allows the trust to access certain tax concessions, but it also limits distributions to the ‘family group’ as defined by the ATO. If income is distributed outside this group, it attracts penalty tax rates at the top marginal rate plus the Medicare levy.

ATO’s Focus on Section 100A – Why It Matters

The ATO is actively targeting arrangements where trust distributions appear artificial or contrived to reduce tax liabilities. Under Section 100A, distributions made under reimbursement agreements—where a beneficiary receives income but does not actually benefit from it—may be considered tax avoidance. This could lead to serious tax penalties.

How to Prevent S100A Issues

  1. Ensure Beneficiaries Benefit from Distributions – Distributions should be genuine and directly benefit the intended recipient.
  2. Keep Proper Documentation – Maintain clear records of trust resolutions and distribution decisions.
  3. Avoid Circular Arrangements – Ensure income distributions do not involve reimbursement agreements or artificial arrangements.
  4. Review Trust Deed Regularly – Ensure your trust deed is up to date and compliant with tax laws.
  5. Seek Professional Advice – Consult an accountant or tax specialist to structure distributions correctly and avoid penalties.

Undistributed Income and Tax Implications

A trust does not pay tax on distributed income, as the tax liability shifts to the beneficiary. However, any undistributed income is taxed at the highest marginal tax rate (currently 45%). To minimize tax burdens, trustees should aim to distribute income before the end of the financial year.

Additionally, distributions to minors are subject to penalty tax rates, so careful planning is necessary when allocating trust income.

The Importance of Seeking Expert Advice

Family trusts offer significant benefits but require careful management to stay compliant with evolving tax regulations. At Endurego Tax, we specialize in helping families navigate trust structures, ensuring optimal tax outcomes while safeguarding against ATO scrutiny.

If you need guidance on family trust elections, trust distributions, or tax compliance, our team is here to assist. Contact us today to protect and optimize your family trusts.


By structuring your family trust correctly, you can maximize tax efficiency, protect assets, and ensure compliance with ATO regulations. Don’t take risks—seek professional advice to keep your trust secure and effective.