Testamentary Trusts Explained: How Melbourne Families Save on Tax Each Year

We sat across from Sarah last month — a Melbourne mother of three whose husband James had just passed away suddenly. She was staring at a tax bill for $67,000 on the investment income from James's estate. "There has to be another way," she said through tears. There was — but it required setting up a testamentary trust in his will before he died.

This conversation happens in our office every month. Australian families are paying tens of thousands in unnecessary tax because they do not understand testamentary trusts tax benefits. As of 2026, these structures can save families between $15,000 and $80,000 per year — yet most people have never heard of them.

Here is what We wish every family understood: testamentary trusts are not just for the wealthy. They are tax-efficient structures that protect your family's financial future while minimising the Australian Tax Office's take.

What Are Testamentary Trusts and Why Should You Care

A testamentary trust is a trust created through your will that only comes into existence after you die. Think of it as a financial wrapper that holds your assets and distributes income to your beneficiaries in the most tax-effective way possible.

Under the Income Tax Assessment Act 1997, testamentary trusts receive special tax treatment that other family trusts simply do not get. This is exactly why our team qualified as both a CPA and a solicitor — the tax implications of estate structures are enormous, and most lawyers do not fully grasp the financial benefits.

Here is what that actually means in practice: Instead of your children receiving inheritance income in their own names and paying adult tax rates, the trust can distribute that income strategically to minimise the overall family tax burden.

The Tax Benefits That Make Accountants Weep with Joy

Tax-Free Threshold for Minor Beneficiaries

This is the big one. Income distributed from a testamentary trust to children under 18 is taxed at normal adult rates, not the punitive minor tax rates that apply to other trust distributions.

For 2026, this means each child can receive up to $18,200 tax-free from the trust. Compare this to other family trusts, where any unearned income above $416 for a minor is taxed at 66%.

Take Sarah and James — a Hawthorn couple with three children aged 8, 12, and 15. James's investment portfolio generates $80,000 per year. Without a testamentary trust, Sarah would pay tax on the full amount at her marginal rate. With a testamentary trust properly structured in James's will, they could distribute $18,200 to each child tax-free, saving approximately $24,000 per year in tax.

Income Splitting Opportunities

Testamentary trusts can distribute income among adult beneficiaries to utilise lower tax brackets. If your surviving spouse is already in a high tax bracket, the trust can distribute income to adult children, grandchildren, or even back to the surviving spouse in future years when their income is lower.

Capital Gains Tax Benefits

When the trust sells inherited assets, it can distribute the capital gain across multiple beneficiaries, each utilising their own capital gains tax discount and tax-free threshold.

Meet David — a tradesman from Essendon who inherited his father's $1.2 million investment property portfolio through a testamentary trust. When the trust sold one property for a $300,000 capital gain, it distributed the gain across David, his wife, and their two adult children. This saved the family approximately $31,000 in capital gains tax compared to David receiving the inheritance directly.

Asset Protection: The Hidden Benefit Nobody Talks About

Beyond testamentary trusts tax benefits, these structures provide genuine asset protection. Assets held in the trust are generally protected from:

• Bankruptcy of beneficiaries
• Relationship breakdowns and property settlements
• Business creditors
• Professional indemnity claims

We have seen this protection save families millions. Last year, a beneficiary of a testamentary trust went through a messy divorce. Because his inheritance was held in the trust rather than his personal name, it was largely protected from the property settlement.

When Testamentary Trusts Do Not Make Sense

Not every family needs a testamentary trust. Here is our honest assessment of when they are not worth the complexity:

Small Estates Under $500,000

If your estate is primarily the family home plus super, the annual tax savings probably do not justify the additional compliance costs and complexity.

Single Adult Beneficiary

If you have one adult child who will inherit everything and they are already in a low tax bracket, the benefits may be minimal.

Complex Family Dynamics

Testamentary trusts require ongoing cooperation between beneficiaries and trustees. If your family cannot agree on what to have for dinner, they probably cannot manage a trust structure together.

The Real-World Numbers: What Families Actually Save

Let us show you the mathematics that make these structures worthwhile.

Example 1: The Young Family Tom and Rachel have two children aged 6 and 10. Tom's estate includes an investment portfolio generating $60,000 annual income.

Without testamentary trust: Rachel pays tax on $60,000 at her marginal rate (37% including Medicare levy) = $22,200 tax

With testamentary trust: Income distributed $18,200 to each child (tax-free) plus $23,600 to Rachel at lower bracket = $8,732 tax

Annual saving: $13,468

Example 2: The Blended Family Mark has four children from two relationships. His estate generates $120,000 annual investment income.

Without proper structure: Various tax rates applying to different beneficiaries, approximately $38,000 total tax

With testamentary trust: Strategic distribution across all beneficiaries = approximately $21,000 total tax

Annual saving: $17,000

Common Myths About Testamentary Trusts

Myth 1: They Are Only for Millionaires

False. We regularly recommend testamentary trusts for families with estates between $600,000 and $1 million. The tax savings often justify the structure within 2-3 years.

Myth 2: They Are Too Complex to Manage

A well-drafted testamentary trust clause in your will under the Wills Act 1997 creates a structure that operates smoothly with annual tax returns and basic record-keeping. Most families find the administrative burden minimal compared to the tax benefits.

Myth 3: You Lose Control of Your Assets

The trustee (often the surviving spouse) has broad discretionary powers to distribute income and capital among beneficiaries. This provides flexibility, not restrictions.

Testamentary Trusts vs Other Trust Structures

Family Discretionary Trusts

Most family trusts cannot distribute tax-free income to minors. They also face potential issues with the 80-year rule and more complex tax compliance.

Self-Managed Super Funds

SMSFs have contribution limits and preservation requirements. Testamentary trusts provide flexibility to distribute inherited assets without these restrictions.

The Compliance Reality: What You Need to Know

Testamentary trusts require:

• Annual tax returns
• Basic financial records
• Trustee resolutions for distributions
• Regular reviews of distribution strategies

The annual compliance cost typically ranges from $2,000 to $5,000. For most families benefiting from these structures, the tax savings far outweigh these costs.

Integration with Your Overall Estate Plan

Testamentary trusts work best as part of a comprehensive estate plan. This means considering:

• Superannuation beneficiary nominations
• Powers of attorney structures
• Insurance arrangements
• Business succession planning

For blended families especially, testamentary trusts can address complex inheritance issues while maximising tax efficiency. We wrote about one Melbourne family's $340,000 court battle that could have been avoided with proper testamentary trust planning in this detailed case study.

Setting Up Testamentary Trusts in Victoria

Under Victorian law, testamentary trusts must be properly established through your will. The Wills Act 1997 requires specific formalities, and the trust provisions need careful drafting to maximise tax benefits while maintaining flexibility.

Key considerations include:

• Trustee appointment and succession
• Beneficiary classes and powers
• Distribution discretions
• Asset protection provisions
• Tax optimisation clauses

The 80-Year Sunset Clause

Testamentary trusts established after 2007 must vest (wind up) within 80 years. This provides decades of tax benefits while ensuring the structure eventually distributes assets outright to beneficiaries.

For most families, 80 years provides ample time to maximise benefits across multiple generations.

Recent Changes and 2026 Updates

The tax landscape continues evolving. Recent ATO rulings have clarified several aspects of testamentary trust taxation, generally favouring taxpayers who structure these arrangements properly.

As of 2026, the minor beneficiary tax rates remain punitive for most trust distributions, making testamentary trusts even more valuable for families with children.

The Bottom Line on Testamentary Trusts Tax Benefits

Here is our professional assessment after helping hundreds of Melbourne families structure their estates:

Testamentary trusts make financial sense for families with:

• Combined estates over $600,000
• Minor beneficiaries who will receive income-producing assets
• Multiple adult beneficiaries in different tax brackets
• Concerns about asset protection

The annual tax savings typically range from $15,000 to $80,000 for families who implement these structures properly.

What We always tell clients is this: the decision is not just about current tax rates. It is about providing your family with flexibility and protection for decades to come. Tax rates may change, family circumstances will evolve, but a well-structured testamentary trust adapts to these changes.

Your Next Steps

If you are reading this and thinking about your own family's situation, here are the immediate steps We recommend:

1. Calculate your current estate's income-generating capacity
2. Consider your beneficiaries' likely tax positions
3. Factor in asset protection benefits beyond pure tax savings
4. Review your existing will to ensure it creates the structures you need

Most families We meet wish they had understood these benefits years earlier. The good news is that proper estate planning — including testamentary trusts where appropriate — can be implemented at any stage of life.

Get Clear on Your Options

Every family's situation is different, but the principles remain the same: proper estate planning structures can save your family tens of thousands in tax while providing asset protection and flexibility.

If you are wondering whether testamentary trusts make sense for your family's situation, book a free consultation and We will run through the numbers with you. No sales pitch, no pressure — just clarity on what structures would actually benefit your family and what the real-world costs and benefits look like.

We have sat across from too many families dealing with preventable tax bills and asset protection issues. Thirty minutes of conversation now can save your family years of complexity and thousands in unnecessary tax.