Why Testamentary Trusts remain an effective estate-planning vehicle

KPA Lawyers | Melbourne
6 July 2026  ·  3 min read

KPA Lawyers | Melbourne

What is a Testamentary Trust


A Testamentary Trust (TT) is a discretionary trust that comes into existence on your death under the terms of your Will. Income, capital gains and capital can be distributed to a wide class of beneficiaries (typically your spouse, children, grandchildren, related trusts, companies and charities) at the discretion of the Trustee.

Because the Trustee can choose which beneficiaries receive income and capital, a Testamentary Trust gives the family enduring flexibility to manage tax, protect inherited wealth, and preserve capital across generations: outcomes a direct gift simply cannot achieve.

KPA Lawyers | Melbourne

Tax management & income splitting


  • Income splitting: trust income can be streamed to multiple adult beneficiaries on lower marginal rates, delivering savings of up to around 15% against the top marginal rate (currently 45%).
  • CGT streaming. A specifically entitled beneficiary can be streamed capital gains separately from income, using each beneficiary’s own CGT discount, capital losses and marginal rate, a powerful tool when selling appreciated estate assets such as shares, managed funds or investment property.
  • Capital distributions to beneficiaries are generally not subject to income tax, and CGT roll-over relief continues to apply on the distribution of inherited assets.

Five reasons why a Testamentary Trust makes sense


  • Tax management
  • Asset protection
  • Family law protection
  • Investment & business vehicle
  • Intergenerational bloodline

Advantages and disadvantages


Advantages of a Testamentary Trust

Disadvantages / considerations

Asset protection from creditors, bankruptcy and family-law claims affecting a beneficiary.

More complex than a direct gift: additional drafting cost and ongoing governance (situation dependant).

Income and CGT streaming: up to 15% saving v top rate, plus each beneficiary’s own CGT discount streaming.

Income and CGT streaming: up to 15% saving v top rate, plus each beneficiary’s own CGT discount streaming.

Ongoing investment & business vehicle, and intergenerational bloodline vehicle for up to 80 years (in-laws can be excluded).

Annual trustee compliance: separate TFN, tax return and accounts, modest ongoing administration is required.

Protection of vulnerable beneficiaries (minors, disability, addiction, spendthrift).

Trustee’s investment decisions can be challenged by dissatisfied beneficiaries in certain circumstances.

Flexible tax management: Trustee chooses each year how to distribute income and capital gains across beneficiaries.

A Testamentary Trust should be tailored to the client’s circumstances and reviewed if laws, family or assets change materially.

Where to from here


A Testamentary Trust continues to deliver materially better outcomes than a direct gift across all five pillars set out above. Tax rules affecting trusts may evolve over time, but each of these five reasons (tax management, asset protection, family-law protection, an ongoing investment & business vehicle, and intergenerational bloodline preservation) stands on its own merits and remains a compelling reason to incorporate Testamentary Trust provisions in your Will. As experienced testamentary trust lawyers in Melbourne we recommend clients give careful consideration to Wills incorporating Testamentary Trust provisions.

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The information contained in this article is of a general nature only and does not constitute legal advice. It has been prepared by KPA Lawyers without considering your specific objectives, circumstances or needs, and should not be relied on as a substitute for tailored legal advice.

While KPA Lawyers takes reasonable care to ensure that the information is accurate and current at the time of publication, we do not warrant its accuracy, completeness or currency and the law may change after the publication date. You should obtain legal advice from a lawyer before acting or relying on any information in this article.

Accessing or reading this article does not create a solicitor-client relationship with KPA Lawyers. To the fullest extent permitted by law, KPA Lawyers, its principals and employees disclaim all liability for any loss or damage arising from reliance on the information contained in this article. Liability is limited by a scheme approved under professional standards legislation.

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