What Happens If You Die Without a Will in the UK?

If you die without a valid will, you lose all control over what happens to your estate. Instead, a rigid set of laws called the Rules of Intestacy decide who gets what – and these rules often produce results that shock families.

I've spent 15 years helping families navigate estate planning, and some of the most difficult situations I've seen involve people who died intestate. The law doesn't care about your wishes, your relationships, or what you would have wanted. It applies the same formula to everyone.

What is Intestacy?

Intestacy is the legal term for dying without a valid will. When this happens, the Rules of Intestacy determine who inherits your estate. These rules haven't been significantly updated since 2014, and they reflect traditional family structures that don't match how many people live today.

The rules create a strict hierarchy of inheritance. Only certain relatives can inherit, in a specific order. If you don't fall into one of these categories, you get nothing – even if you were the closest person to the deceased.

About 60% of UK adults don't have a will. Many assume their spouse will inherit everything, or that their long-term partner has rights. They're often wrong.

Rules for Married Couples and Civil Partners

If you're married or in a civil partnership, your spouse does inherit – but they might not inherit everything.

If you have no children:

Your spouse inherits your entire estate. This is the one scenario where intestacy might match what most people want.

If you have children:

This is where it gets complicated. Your spouse inherits:

• All your personal possessions (furniture, car, jewellery, etc.)
• The first £322,000 of your estate
• Half of anything remaining above £322,000

Your children inherit the other half of anything above £322,000, held in trust until they turn 18.

Example: John dies with an estate worth £600,000 and no will. He has a wife and two children. His wife receives all personal possessions, plus £322,000, plus half of £278,000 (= £139,000). Total for wife: £461,000. The remaining £139,000 goes to the children equally (£69,500 each).

This might sound reasonable, but consider: what if most of that estate is tied up in the family home? The widow might need to sell or mortgage the house to give the children their share.

Rules for Unmarried Partners

This is where intestacy rules cause the most devastation. If you're not married or in a civil partnership, your partner inherits absolutely nothing under intestacy rules.

It doesn't matter if:

• You've been together for 30 years
• You have children together
• You jointly own your home
• You're financially dependent on each other
• Everyone considers you a couple

In the eyes of intestacy law, an unmarried partner is a stranger. Everything goes to children, or if there are no children, to parents, siblings, or more distant relatives.

Real situation I've seen: A couple had been together for 25 years but never married. They owned their home as 'tenants in common' with 50% each. When he died suddenly without a will, his 50% of the house passed to his elderly mother under intestacy rules. His partner – the woman he'd shared his life with – had to either buy out her mother-in-law or sell the family home.

What About Children?

If you have no spouse or civil partner, your children inherit everything equally. If you have both a spouse and children, the children share in anything above the spouse's £322,000 threshold.

But which children?

• Biological children – yes, they inherit
• Legally adopted children – yes, they inherit
• Stepchildren – no, they inherit nothing
• Children conceived after your death (e.g., through IVF) – complex rules apply

This causes real problems for blended families. Your stepchildren – whom you may have raised since they were toddlers – have no automatic right to inherit from you. Only a will can provide for them.

Children under 18:

If your children are under 18, they don't receive their inheritance immediately. Instead, it's held in trust and managed by trustees until they reach 18 (or marry earlier). The trustees are usually your spouse or the court-appointed administrators of your estate.

This might not be what you'd want. Some parents prefer their children to receive inheritance at 21 or 25, when they're more mature. A will lets you set the age; intestacy gives you no choice.

What If You Have No Close Family?

If you have no spouse, children, parents, or siblings, your estate passes down an increasingly distant list:

1. Your parents (if still alive)
2. Brothers and sisters (or their children if they've died)
3. Half-brothers and half-sisters
4. Grandparents
5. Aunts and uncles
6. Half-aunts and half-uncles
7. The Crown (bona vacantia)

Yes, if you have no relatives in any of these categories, everything you own goes to the government. Not to your best friend, not to your favourite charity, not to anyone you actually knew. The Crown.

This happens more often than you'd think, particularly with people who are estranged from their families or never had children.

Real-Life Examples of Intestacy Problems

These are based on situations I've encountered, with details changed for privacy:

The Unmarried Partner

Margaret and Peter lived together for 18 years. They bought a house together, shared finances, and supported each other through illness. Peter died suddenly at 58 without a will. His share of the house (owned as tenants in common) went to his adult children from a previous marriage, who he barely saw. Margaret had to negotiate with them to keep living in her own home.

The Blended Family

David had two stepchildren he'd raised since they were 3 and 5. Their biological father wasn't in the picture. David also had one biological child from his first marriage. When David died intestate, everything went to his biological child. His stepchildren – who he'd put through university, walked down the aisle, and considered his own – received nothing.

The Estranged Relative

Caroline hadn't spoken to her brother in 20 years after a family falling out. She had no children and her parents had passed away. When she died without a will, her estranged brother inherited everything – including the house she'd wanted to leave to her best friend who'd cared for her during her final illness.

Who Handles the Estate Without a Will?

If there's no will, there are no appointed executors. Instead, someone must apply to be the 'administrator' of the estate. The rules for who can apply follow the same hierarchy as inheritance:

1. Spouse or civil partner
2. Children (over 18)
3. Parents
4. Siblings
5. And so on...

This can cause delays and disputes. What if multiple children want to be administrator? What if they don't get along? What if the only eligible person lives abroad and doesn't want the responsibility?

The application process (Letters of Administration rather than Grant of Probate) is similar to probate but can take longer, especially if there are disputes about who should administer the estate.

How to Avoid Intestacy

The solution is simple: make a will. It doesn't have to be complicated or expensive, but it does need to be done properly.

A valid will lets you:

• Leave everything to your partner, regardless of whether you're married
• Provide for stepchildren and other people you care about
• Exclude relatives you're estranged from
• Leave gifts to friends and charities
• Choose who manages your estate
• Appoint guardians for your children
• Potentially reduce inheritance tax

Don't put it off. I've helped families where someone in their 30s died suddenly without a will. You can't predict when you'll need it, so the time to make one is now – while you're healthy and have time to think it through properly.

Even if your situation is straightforward, getting professional advice ensures your will is valid and covers everything it needs to. The cost of a will is tiny compared to the cost of getting it wrong.