Testamentary Trusts: A Complete Guide for Protecting Your Family’s Future

Why Consider a Testamentary Trust?

When planning your estate, you’re not just passing on assets — you’re securing your family’s future. A testamentary trust can:

• Reduce the tax burden on your beneficiaries.
• Protect inheritances from divorce, bankruptcy, and other risks.
• Safeguard young or financially inexperienced beneficiaries from mismanaging what you leave them.

Think of it as a safety net that only activates when it’s needed most — after you’ve gone.

What Exactly Is a Testamentary Trust?

A testamentary trust is a trust created under the terms of your will. Unlike a family trust you set up during your lifetime, a testamentary trust only comes into effect when you pass away.

The structure is simple in concept:

• Trustee → manages and controls the assets.
• Beneficiaries → may benefit from the assets, but don’t directly own them.
• Discretion → the trustee decides who benefits, when, and how much.

This separation of ownership and benefit is what gives testamentary trusts their strength — assets are much harder for outside parties (creditors, ex-partners, or others) to claim.

How Does It Work in Practice?

Here’s a step-by-step outline:

1. Will Preparation – The trust is drafted into your will while you’re alive.
2. Activation – The trust “switches on” after your death.
3. Trustee Control – Trustees (who may also be beneficiaries) manage the assets.
4. Income Distribution – The trustee decides how income is allocated among beneficiaries, often year to year.
5. Ongoing Administration – Annual compliance applies, but the potential tax benefits usually far outweigh the administrative effort.
6. Review Triggers – Major life changes (new children, relationship breakdowns, legislative changes) may require updating your will to keep the trust effective.

Key Benefits of a Testamentary Trust

1. Tax Efficiency

• Trustees can distribute income across family members to take advantage of lower marginal rates.
• Unlike other trusts, children under 18 can receive “excepted trust income” taxed at adult rates — meaning they can access significant amounts (approximately $18,000 – $22,000) tax-free each year.

2. Asset Protection

• Protects inheritances from claims in bankruptcy proceedings.
• Reduces exposure to relationship property disputes (e.g., divorce).

3. Flexibility and Control

• Trustees can adapt distributions based on changing needs.
• You can nominate who controls the trust and under what conditions.

4. Intergenerational Planning

• Benefits don’t stop with your children — grandchildren (and beyond) may continue to receive tax-efficient distributions.

Case Study 1: Young Children

A couple with two children aged 10 and 12 set up testamentary trusts in their wills.

With a Testamentary Trust Will

• If both parents pass away, trustees manage the inheritance until the children reach financial maturity.
• Each child could receive around $20,000 in trust income annually, tax-free, which covers schooling, activities, and living costs.
• The capital is preserved and released gradually, avoiding waste at a young age.

With a Simple Will

• The inheritance passes directly to the children. If both parents die, the children gain access once they reach 18 or 21 (depending on the state), irrespective of the parents’ wishes per will.
• They may receive a lump sum too early, with little guidance.
• Any income generated by the inheritance is taxed at adult rates for the guardian, reducing funds available for day-to-day expenses.

Case Study 2: Adult Children with Families

A widower leaves his estate to his two adult children, both of whom have young families of their own.

With a Testamentary Trust

• Each child receives their share through a testamentary trust.
• They can stream income to their own children, allowing school fees and other costs to be covered from tax-free distributions.
• The assets remain protected from divorce or creditor claims.

With a Simple Will

• The adult children inherit outright.
• They have no ability to distribute income to their children for tax efficiency — meaning the entire inheritance income is taxed at their personal marginal rate.
• If one child divorces or faces bankruptcy, the inheritance can be at risk in property settlements or claims.

Case Study 3: Blended Family

A woman in a second marriage wants to provide for her spouse while ensuring her children from her first marriage inherit long term.

With a Testamentary Trust

• Her will establishes a testamentary trust.
• Income can be distributed to her spouse for life, but capital is preserved for her children.
• Co-trusteeship ensures no single party can divert the inheritance.

With a Simple Will

• If she leaves everything outright to her spouse, there is no guarantee her children will inherit later.
• If the spouse remarries or leaves a new will, the children could miss out entirely.
• Even if assets are left directly to the children, they may be exposed to claims from the surviving spouse.

Case Study 4: Financially Vulnerable or Special Needs Beneficiary

A father is concerned about leaving a large inheritance to his adult son, who has a history of poor money management and is also receiving a disability support pension.

With a Testamentary Trust

• The will establishes a testamentary trust with an independent trustee.
• The trustee controls when and how funds are released, ensuring the son’s essential needs are met while preventing wasteful spending.
• Because the son doesn’t technically own the assets, the inheritance is less likely to affect his pension entitlements or be targeted by creditors.
• Over time, the trustee can distribute income to cover living costs, healthcare, and support services in a sustainable way.

With a Simple Will

• The inheritance is paid directly to the son in a lump sum.
• There is a high risk the money could be spent quickly or unwisely.
• The lump sum could affect his eligibility for government benefits, leaving him financially worse off in the long run.
• If he later incurs debts or faces bankruptcy, the entire inheritance may be exposed to claims.

Who Should Consider a Testamentary Trust?

You should strongly consider including a testamentary trust in your will if one or more of the following apply:

• Your estate (including superannuation and life insurance) is likely to exceed $500,000.
• You want to leave assets to children under 18.
• You wish to protect inheritances from divorce, bankruptcy, or financial mismanagement.
• You have blended family dynamics or anticipate complex family relationships.
• You want your wealth to benefit multiple generations.

Trustee Guidance: Choosing Wisely

The trustee role is crucial. Consider:

• Appointing someone financially responsible, trustworthy, and impartial.
• Using co-trustees to balance family involvement with independent oversight.
• Professional trustees (e.g. Solicitor/Office of the NSW Trustee & Guardian) where independence is paramount (though this comes with added cost).

Review Triggers: Keeping It Relevant

Even the best-drafted testamentary trust can become outdated. Review your will if:

• You marry, divorce, or re-partner.
• You have children or grandchildren.
• There are major changes to your wealth or business structure.
• Tax laws change (e.g., rules around excepted trust income).

Final Thoughts

A testamentary trust can be one of the most effective tools in estate planning, offering both protection and flexibility. But it must be drafted carefully — you only get one chance to include it in your will.

Estate planning is about protecting the people you love. Contact us for a confidential consultation to see if a testamentary trust is right for your family.

Next Steps

• Book an initial consultation with Klarion Law Group – available in-office, at your home, or via Teams.
• Protect your family’s future with a tailored Will and estate plan.

Disclaimer: The information in this article is general in nature and does not constitute legal advice. The laws and processes discussed apply to New South Wales at the time of writing the article and may change over time. Your circumstances may be different, and outcomes can vary depending on your specific situation. You should seek independent legal advice before making any decisions regarding your estate or legal matters.