Having a Baby Does Not Change Your Will

Marriage tears up your will and starts again. Having a baby does not. If you made a will before your children were born and have not touched it since, that will is still valid, still in force, and still says exactly what it said when your family was smaller — which, for a great many people, means it does not mention their children at all.

This surprises people because the two events feel equally life-changing, and because everyone has heard that a wedding affects a will. The law treats them completely differently. Getting married revokes an earlier will automatically. Having a child does nothing to it. The document sits there unchanged, and unless you named your children in a way that catches those born later, a new baby simply has no place in it.

So the honest answer to whether having a baby changes your will in the UK is no — you have to change it yourself. The same is true of your life insurance, which pays whoever the policy or its trust names, not whoever has been born since. This page sets out what your existing will still says, why marriage is the one exception, and the two documents worth sorting while a newborn makes everything else feel impossible.

The short answer: a birth changes nothing on its own

There is no rule anywhere in the United Kingdom that cancels a will when a child is born. Not in England and Wales, not in Scotland, not in Northern Ireland. The will you signed before you were a parent keeps every word it had.

That is not a loophole or an oversight. The law simply does not treat a birth as an event that should undo your stated wishes. The trouble is that most people write their first will for the life they had at the time — leaving everything to a partner, or splitting it between siblings and parents — and then never revisit it. A child born afterwards inherits under that will only if its wording happens to include them, and very often it does not.

Why marriage is the one event that does rewrite a will

Marriage is the striking exception, and it catches couples out constantly. In England, Wales and Northern Ireland, getting married automatically revokes any will you made beforehand, under section 18 of the Wills Act 1837. From the day of the wedding the earlier will is gone, as though you had torn it up, and if you write no new one you die intestate — with the law, not your will, deciding who inherits.

There is one way round it. A will made expressly in expectation of marriage to a particular person survives the wedding, provided it says so. That is why couples who make wills shortly before marrying should have them drafted in contemplation of marriage to the named partner, so the ceremony does not wipe them out. A birth needs no such trick, because a birth was never going to revoke the will in the first place. The asymmetry is the whole point: the event people worry least about, a new baby, is the one that leaves the will untouched and possibly wrong.

What a pre-child will probably still says

If your will predates your children, it is worth reading again tonight, because the common outcomes are worse than people expect.

A will made when you were single may leave everything to your parents, or split it between siblings, with no mention of a partner or a child who arrived later. A will made with a previous partner may still leave everything to them. A pair of mirror wills made with your current partner may leave everything to each other and say nothing about what happens to the children if you both die — and nothing about who would raise them. In none of these cases does the new baby automatically step in. The children inherit only if the words already there include them, for example a gift to “all my children” rather than to individuals named years ago.

And if there is no valid will at all — because a marriage revoked the old one and no new one was ever made — the intestacy rules take over, and they are blunt. A surviving unmarried partner inherits nothing under them, however long you were together and whether or not you have children together. A married partner shares the estate with the children rather than taking all of it once it passes a set threshold, with the children's shares held for them until they are eighteen. Neither outcome is likely to be the one you would have chosen for a young family, and neither can be adjusted after the event.

Relying on the idea that your closest family would simply sort it out between them is riskier than it sounds. Who counts as your next of kin has no bearing at all on who inherits — that phrase carries far less legal weight than most people think, as next of kin does not mean what you think it means explains.

The guardian question a will is the place to answer

For parents of young children, the will does one job that nothing else can: it names a legal guardian. If both parents die — or the surviving parent dies with no one else holding parental responsibility — the guardian you appointed steps in to raise your children. Appoint nobody, and the decision falls to a court, which will do its best without knowing what you would have wanted.

The appointment must be in writing, signed and dated, and a will is the natural place for it. It takes effect only when there is no one else with parental responsibility left, so for most couples it is a plan for the rare case of both parents going, not a transfer that happens the moment one of you dies.

Naming a guardian is free. Making sure that guardian could actually afford to take your children in is the part people skip, and it is the harder half. A couple raising two more children overnight faces a cost nobody has handed them the money for, which is where life cover, pointed at the guardian through a trust, comes in. Where the money is meant for the children specifically rather than an adult who might be looking after them, a trust keeps control of it — the approach set out in divorced: paying the children, not the ex.

Where your life insurance actually goes

A will controls your estate, but a great deal of what a family needs never passes through the estate at all, and life insurance is the main example. A policy pays the people it names, or the trustees of the trust it is written into. It does not read your will, and it does not know a baby has arrived.

So if your cover is written in trust for “my spouse”, or names a specific person, a child born later is not automatically added. If the cover simply pays your estate, then it follows your will — which brings you straight back to the problem above, because a pre-child will may send the money somewhere you would not choose. Either way, a new child is provided for through your policy only if you make it so, by updating the trust or the beneficiaries. Family income benefit, which pays a monthly amount for the rest of its term rather than a lump sum, is a common choice for replacing a parent's income while children are growing up, and it can be written in trust the same way. Where a child has additional needs, paying money to them outright can disturb means-tested support, so it is usually held in a trust instead, as leaving money to an autistic child without losing benefits describes.

It is worth checking the same question on any workplace pension or death-in-service benefit while you are at it. Those are usually paid at the discretion of the scheme's trustees, guided by an expression-of-wishes or nomination form you complete, and a form filled in before your children were born will not mention them. Updating it costs nothing, takes minutes, and is one of the few pieces of this that you can finish in a single evening.

What to sort, and in what order, with a newborn

Newborn life leaves no room for admin, so keep the list short and ordered.

First, read your existing will and check, in plain terms, whether your children and your current partner are actually in it. If the will predates either, that is the priority.

Second, check who your life cover pays. Look at whether it is written in trust, whom that trust names, and whether the sum still matches the mortgage and the years of childhood ahead.

Third, if you have cover to arrange or increase, do it while you are well: you can get life insurance quotes and have an FCA-authorised broker set it up in trust from the outset, which avoids a later fix. Anything already diagnosed has to be disclosed, and honest answers are what make a claim pay.

Fourth, make or update the will itself, including the guardian appointment, so the whole picture agrees. A young family with a joint mortgage is the classic case for getting this done properly the first time, as a will at 27 with a toddler and a joint mortgage shows.

Scotland and Northern Ireland

The birth rule is the same across the UK: nowhere does having a child revoke a will. The marriage rule is where the nations part company.

In England, Wales and Northern Ireland, marriage revokes an earlier will unless it was made in contemplation of that marriage. In Scotland, marriage does not revoke a will at all — an earlier Scottish will stands after the wedding. But Scotland protects spouses and children in a different way, through legal rights: fixed shares of the moveable estate that can be claimed whatever the will says, and a child born after the will was made may have a route to challenge it. So a Scottish parent whose will ignores a later child is in a different position from an English one, but not necessarily a safe one. Either way the fix is the same everywhere — review the will yourself after each child, because no birth will do it for you. The wider set of these turning points is collected in our guide to life events that change who depends on you.

Frequently asked questions

Does having a baby cancel my existing will?

No. There is no rule anywhere in the UK that makes a birth revoke a will. A will made before your children were born stays fully valid, and still leaves everything to whoever you named at the time, which may be a sibling, a parent or a former partner. If you want your children included, you have to change the will yourself.

But marriage does revoke a will?

Yes, in England, Wales and Northern Ireland, under section 18 of the Wills Act 1837, unless the will was expressly made in expectation of marriage to a particular person. Scotland is different: marriage does not revoke a will there, though a child born later may be able to challenge it, and legal rights give a spouse and children fixed shares regardless.

How do I appoint a guardian for my child?

In writing, normally in your will, signed and dated. The appointment takes effect only when nobody else with parental responsibility survives you, so for most couples it applies if both parents die. Naming someone is free; whether they could afford to raise your children is the separate question, and the one life cover is usually meant to answer.