This guide is for information only and does not constitute financial advice. Always speak to a qualified financial adviser before making financial decisions.

Planning a wedding is an emotional whirlwind. Between the guest lists, the venue tours, and the choice of cake, it is easy to forget that marriage is not just a romantic milestone; it is one of the most significant legal contracts you will ever sign. While most couples focus on their future lives together, few stop to ask a critical question: does marriage revoke a will in the UK? For many, the answer comes as a shock, often only discovered when it is too late to rectify.

In England and Wales, the act of marriage automatically cancels any existing will you have made. This means that unless you have taken specific legal precautions, the day you say "I do," you effectively become "intestate" in the eyes of the law. Your carefully planned legacy—intended for siblings, charities, or children from a previous relationship—could vanish, replaced by the rigid, one-size-fits-all rules set by the government.

Understanding the intersection of marriage and inheritance is vital for protecting your new spouse and your wider family. Whether you are a first-time buyer in your 20s or a settled professional in your 50s with existing assets, this guide explains how marriage changes your legal landscape and what you need to do to ensure your wishes are still honoured.

Does marriage revoke a will in the UK?

Under Section 18 of the Wills Act 1837, the general rule is that marriage or a civil partnership automatically revokes (cancels) any will previously made by either party. The law assumes that by entering into a marriage, your circumstances and priorities have changed so fundamentally that your old will is no longer relevant.

This "automatic revocation" can lead to unintended consequences. For example, if you wrote a will five years ago leaving your estate to your siblings and then marry your partner without updating that will, the siblings will no longer inherit under the terms of that document. Instead, the intestacy rules for a spouse will take over, which may not be what you intended.

The "In Contemplation" Exception: You can prevent your will from being revoked if it contains a specific "in contemplation of marriage" clause. This clause must name your future spouse and state that you do not want the upcoming marriage to revoke the will. Simply being engaged is not enough; the wording must be precise.

Regional Differences: Scotland and Northern Ireland

It is important to note that inheritance laws differ across the UK. In Scotland, marriage does not automatically revoke a will. However, children and spouses have "Prior Rights" and "Legal Rights" to certain parts of the estate regardless of what the will says. In Northern Ireland, the rules are similar to England and Wales, where marriage generally revokes an existing will.

The Intestacy Rules for Spouses Explained

If your will is revoked by marriage and you pass away before making a new one, you are said to have died "intestate." The state then decides how your assets are distributed based on a strict hierarchy. While the inheritance rules for married couples are more generous than for cohabiting partners, they still might not provide the outcome you want.

As of 2025, the statutory legacy for a surviving spouse in England and Wales is £322,000. Here is how it breaks down depending on your family situation:

Family Circumstances Who Inherits What?
Spouse, no children The surviving spouse inherits everything (personal items and the entire estate).
Spouse and children Spouse gets all personal items, the first £322,000, and 50% of the remainder. Children share the other 50%.
Unmarried partner Inherits nothing automatically. The estate passes to children, parents, or siblings.

For many couples, particularly those with children from previous marriages (blended families), these rules can create significant friction. If the estate is worth more than £322,000, children might suddenly own a portion of the family home, potentially forcing a sale or creating complex co-ownership issues with the surviving stepparent.

Worked Example

James and Sarah marry in 2024. James has a house worth £500,000 in his sole name and two children from a previous marriage. He has an old will leaving everything to his children, but he doesn't update it after the wedding. James passes away in 2025.

Because the marriage revoked his will, the intestacy rules apply:

  • Sarah (the spouse) receives the first £322,000.
  • The remaining £178,000 is split 50/50.
  • Sarah receives an additional £89,000.
  • The children share the final £89,000.

The children, who James intended to inherit the whole house, now only receive £44,500 each, and Sarah owns the majority of the property.

Inheritance Tax (IHT) Benefits for Married Couples

While the revocation of a will is a hurdle, marriage provides significant advantages regarding Inheritance Tax (IHT). In the UK, the "spousal exemption" allows you to pass assets of any value to your husband, wife, or civil partner tax-free, provided they are domiciled in the UK.

1. The Transferable Nil-Rate Band

Every individual has a tax-free allowance (Nil-Rate Band) of £325,000. For married couples, if the first spouse to die leaves their entire estate to the survivor, their £325,000 allowance is not used. It can be transferred to the surviving spouse, giving them a combined tax-free allowance of £650,000 upon the second death.

2. The Residence Nil-Rate Band (RNRB)

If you leave your main home to direct descendants (children or grandchildren), you get an additional £175,000 allowance. This is also transferable between spouses. This means a married couple can potentially leave an estate worth up to £1 million entirely free of Inheritance Tax (2 x £325,000 + 2 x £175,000).

Making a Joint Will vs. Mirror Wills

When couples decide to update their estate plan after marriage, they often ask about making a joint will. In the UK, "Joint Wills" (a single document for two people) are extremely rare and generally discouraged by solicitors because they are inflexible.

Instead, most couples opt for "Mirror Wills." These are two separate legal documents that are nearly identical. They typically leave everything to the spouse in the first instance, and then to children or other beneficiaries upon the second death. Mirror Wills allow each person to have their own executor and can be updated independently if the relationship or circumstances change.

Mutual Wills: A Warning

You might also hear the term "Mutual Wills." These are mirror wills that include a legally binding agreement that neither party will change their will after the other dies. These are complex and can lead to significant legal battles, so they should only be entered into with specialist legal advice, particularly in the context of blended families.

Protecting Assets: Property and Pensions

How you own your home and how your pension is structured can be just as important as your will. These assets often pass outside of your will entirely.

Joint Tenants vs. Tenants in Common

  • Joint Tenants: The property automatically passes to the surviving owner, regardless of what your will says. This is common for married couples but can be problematic if you want to ring-fence your share for children.
  • Tenants in Common: You each own a specific share (e.g., 50/50). You can leave your share to whoever you choose in your will. This is often used in "Life Interest Trust" wills to protect assets from care home costs or to ensure children eventually inherit.

Pensions and Life Insurance

Pension death benefits and life insurance payouts are usually held in trust. They do not form part of your legal estate and are therefore not covered by your will. You must complete an "Expression of Wish" or "Nomination" form with your pension provider to ensure the money goes to your new spouse.

Tip: After your wedding, make a list of all financial institutions you deal with. Updating your "Expression of Wish" for your workplace pension is just as important as updating your will.

Step-by-Step: Updating Your Estate Plan After Marriage

If you are recently married or planning your wedding, follow these steps to ensure your inheritance plans are secure:

  1. Review existing documents: Locate your current will and check for an "in contemplation of marriage" clause. If it doesn't have one, assume the will is void.
  2. Discuss your wishes: Talk to your spouse about what should happen to your assets, especially sentimental items, property, and any children from previous relationships.
  3. Choose your executors: Decide who will handle the paperwork. This is often the spouse, but you may want a secondary executor (like a sibling or professional) for backup.
  4. Consult a solicitor: While DIY kits exist, a solicitor ensures the wording is robust and explains the nuances of inheritance tax and trusts.
  5. Update your property title: If you owned a house before marriage, consider whether you should change the ownership from "sole owner" to "joint tenants" or "tenants in common."
  6. Update nominations: Contact your pension provider and life insurance company to update your beneficiaries.
Official Sources & Further Reading

Key Takeaways

  • Marriage cancels your will: In England and Wales, getting married automatically revokes any existing will unless it specifically mentions the upcoming marriage.
  • Intestacy is the default: If you die without a new will, the law dictates who inherits, which may leave children or other relatives with less than you intended.
  • Spousal tax benefits: Marriage allows for the tax-free transfer of assets and the doubling of Inheritance Tax thresholds to £1 million.
  • Mirror Wills are the standard: Most couples should use Mirror Wills rather than Joint Wills for maximum flexibility and legal clarity.
  • Pensions pass separately: Your will does not cover your pension; you must update your "Expression of Wish" form directly with the provider.