Testamentary trust vs simple will: which do you need?

Most people do not need a testamentary trust. Some people badly do. The difference is not the size of your estate on its own — it is what the money will be doing after you die, and who is receiving it. This is the honest comparison.

Written by Michael Klein, Legal Practice Director, admitted 2003 · General information about Queensland law · Last reviewed 2026

Need advice on your own matter? Book a no-obligation consultation with Coastside Law in Golden Beach.

Papers, reading glasses and a pen on a driftwood table beside a window looking out to the sea

The short comparison

A simple will gives each beneficiary their share outright. Once the executor transfers it, it is theirs personally — in their bank account, in their name, exposed to their circumstances.

A testamentary trust will gives each beneficiary their share inside a trust. They usually control it, but they do not own it personally. That single difference produces the tax and protection outcomes below, and the extra cost.

  • Cost to prepare — simple will: modest. Testamentary trust will: from $2,200 incl GST, complex estates quoted
  • Ongoing cost — simple will: none. Trust: a tax return and trustee resolutions every year the trust runs
  • Tax on inherited income — simple will: taxed at the beneficiary's marginal rate. Trust: can be split, including to minor children at adult rates
  • Protection from a beneficiary's creditors or separation — simple will: none. Trust: meaningful, though not absolute
  • Control — simple will: ends at transfer. Trust: continues through the trustee and appointor for up to 80 years
  • Protection from a will challenge — neither. A family provision application can be made against the estate either way

When a simple will is the right answer

If your estate is a home, some super and a modest amount of cash, going to financially settled adult children who will pay off a mortgage or bank it, a simple will is the right document. There is no income stream to split, no meaningful risk to protect against, and the annual compliance cost of a trust would be dead money.

The same is true for most couples leaving everything to each other. What matters far more in that situation is that the will is valid, the executor is the right person, super and jointly-owned property are dealt with properly, and your enduring power of attorney is in place.

When a testamentary trust earns its cost

There are five situations where we regularly recommend one:

  • A beneficiary has young children — income can be distributed to the grandchildren at adult tax rates each year
  • A beneficiary is in business, is a company director, or has given personal guarantees
  • A beneficiary's relationship is unstable, or you want the inheritance to stay in the bloodline
  • A beneficiary has a disability, an addiction, or cannot manage money — provision without a lump sum
  • The inheritance is large enough to be invested rather than spent, so it will keep producing income

The middle option people miss

You do not have to choose one for the whole estate. A will can leave one child's share outright and hold another child's share in trust. It can also give a beneficiary the option to take the money outright or run the trust, decided after your death when their circumstances are known.

That optional or discretionary approach is often the best value. It costs the same as a testamentary trust will to draft, and it means the structure does not become a burden on a beneficiary who does not need it.

What to do next

The decision usually takes one conversation. We will look at your assets, your beneficiaries and the actual risks, and tell you plainly if a simple will does the job. Call 0488 340 853 or send an enquiry and we will confirm the fixed fee before any work starts.

Choosing between a simple will and a testamentary trust

Is a testamentary trust better than a normal will?

Not automatically. It is better where the inheritance will produce income, where a beneficiary has young children, or where there is a real risk from business, separation or vulnerability. For a straightforward estate going to settled adults, a simple will is usually the better value.

What does a testamentary trust will cost compared to a simple will?

At Coastside Law a will with a testamentary trust starts at $2,200 including GST, with complex estates quoted individually. A straightforward will costs considerably less. The trust also carries ongoing accounting costs each year, which a simple will does not.

Can I have a testamentary trust for only one beneficiary?

Yes. A will can leave one share outright and hold another in trust, or give each beneficiary the choice after your death. That flexible approach is often the most practical.

Does either option stop my will being contested?

No. An eligible person can bring a family provision application against your estate under the Succession Act 1981 (Qld) regardless of which structure you use. Reducing that risk is a separate exercise involving how the estate is structured and what evidence is left behind.

Can a simple will be upgraded later?

Yes. A new will replaces the old one entirely, so you can move to a testamentary trust structure whenever your circumstances change — a child starting a business, a grandchild arriving, or a larger inheritance coming your way.

This guide is general information about Queensland law, current at the time of writing. It is not legal advice and does not take your circumstances into account. Call Coastside Law on 0488 340 853 for advice on your own matter.

Next steps

Where to go from here if this is your situation.

  1. 1Wills, probate and estatesWills, executor work, probate applications and estate administration in Queensland.See how we help
  2. 2Check the fixed feeExactly what our conveyancing costs, what is included, and what the third-party disbursements are.View our fees
  3. 3Talk it throughA short, no-obligation conversation with a lawyer at our Golden Beach office.Request a consultationCall 0488 340 853

Prefer to browse first? All legal guides

Speak to a lawyer

Book a wills and estates consultation

Tell us briefly what you're dealing with — a will, an estate, probate or a claim — and we'll come back with what's involved, what it costs and how long it takes.

  • A no-obligation first conversation about your matter
  • Fixed fees quoted in writing before we start
  • Local office at 40 Theresa Street, Golden Beach
  • Members of the Queensland Law Society

Choose an appointment time

Choose how you'd like to meet and a time that suits. Initial consultations are obligation free and we'll confirm your appointment by phone or email.

How would you like to meet?

Requesting an appointment does not create a lawyer–client relationship. Please don't include confidential information until we've confirmed we can act for you.

Call usGet a quote