How do you protect your children's inheritance from a divorce?

Why an ordinary inheritance is exposed

An inheritance left outright becomes your child's personal asset the moment they receive it. From that point it is exposed to the financial risks in their life: a relationship breakdown, a business failure, a bankruptcy, a second marriage that does not last. The most common way family money leaves the family is not tax. It is divorce.

How family law treats an inheritance

When a couple separates in Australia, the family law system divides a pool of assets between them. An inheritance one partner received is very often counted in that pool, particularly once it has been mixed into shared life: paid into a joint account, put towards the family home, or used to fund a shared lifestyle. The longer it has been blended, the harder it is to quarantine. So if your daughter inherits and later separates, part of what you left her can end up with a former partner. You may like that partner very much today. The structure has to hold even if the relationship does not.

What a testamentary trust does

A testamentary trust is a trust created by your will that comes into existence only when you die. Instead of the inheritance passing directly into your child's own name, it flows into a trust that your child may control, without necessarily owning the assets personally.

That distinction can be important. Your child can use the money, invest it and benefit from it, while the assets may be better protected from risks such as relationship breakdown, creditor claims and bankruptcy. While no structure can guarantee protection in every circumstance, a well-drafted testamentary trust can significantly improve the prospects of preserving inherited wealth for your child and future generations.

A testamentary trust can also provide considerable tax advantages. Income can often be distributed across the family, including to grandchildren, allowing inheritance earnings to be managed more tax-effectively over many years. In many cases, the same structure that provides flexibility and protection can also deliver long-term tax benefits.

This is not about distrusting your children's partners

Setting up protection can feel like an accusation. It is not. You are not predicting that a marriage will fail. You are making sure that if life takes an unexpected turn, the outcome you worked for is not undone by something outside anyone's control. The families who do this best treat it as ordinary prudence, the same as insurance. You hope never to need it. You are glad it is there if you do.

What good drafting looks like

A testamentary trust only works if the detail is right. Who controls it, and who controls it after your child. How income and capital can be distributed. How it is taxed. What happens across generations, and what happens if a beneficiary is vulnerable or cannot manage money. A trust drafted as a template, without these decisions made deliberately, can give far less protection than it appears to.

The mistakes I see most often

The first is assuming a standard will already does this. It almost never does. A simple will leaves everything outright, which is exactly the exposure you are trying to avoid. The second is setting up a testamentary trust and drafting it poorly, so it delivers none of the protection or flexibility it should. The third is waiting. Estate planning is easy to postpone because nothing forces the date. The cost of postponing is that the plan is not there on the one day it is needed.

What to do next

If you would like to know whether your current will protects your children's inheritance, or leaves it exposed, that is a short and worthwhile conversation. I help families who have built something significant make sure it passes on the way they intend: protected, tax-effective, and without drama for the people they love.