Wills for Married Couples

What married couples should know about wills: mirror wills, spouse exemption, and getting the details right.

Reviewed by the Estate Advisory Group editorial teamLegally reviewed: 13 August 2026Last updated: 13 August 2026

In short

  • Married couples have stronger intestacy rights than unmarried couples, but not necessarily everything
  • Mirror wills are a common and cost-effective approach for couples with similar wishes
  • Gifts between spouses are generally exempt from inheritance tax
  • Marriage generally revokes an earlier will, and divorce affects gifts to a former spouse

Marriage and civil partnership give couples significantly stronger legal protection than being unmarried, both under the intestacy rules and for inheritance tax. That does not mean a will is unnecessary. Without one, your spouse may not inherit everything you want them to, particularly if you have children or a blended family, and the process of sorting out your affairs is often slower and more stressful for those left behind.

This guide covers what married and civil partnered couples in England and Wales should think about when making wills, including mirror wills, spouse exemption, and the effect of a later marriage or divorce.

What happens without a will

Under the intestacy rules, a surviving spouse or civil partner inherits the deceased's personal possessions and a statutory legacy, with the remainder divided between the spouse and any children according to a set formula, rather than the spouse necessarily receiving everything. If there are no children, the spouse generally inherits more, but other relatives can still be entitled to a share in some circumstances.

This often surprises people who assume a spouse automatically inherits the whole estate. A will avoids the uncertainty and lets you decide exactly how much goes to your spouse, your children or anyone else.

Mirror wills for couples

Many married couples choose mirror wills: two separate wills with broadly matching terms, typically leaving everything to each other and then to their children if both have died. Mirror wills are a straightforward and cost-effective way for couples with shared wishes to put matching arrangements in place, and each will remains legally separate, meaning either person can update their own will later if their circumstances or wishes change.

Mirror wills are different from mutual wills, which are a more restrictive and rarely used arrangement that can legally bind the surviving party not to change their will after the first partner dies. Mutual wills should not be entered into without independent legal advice given how inflexible they are.

Spouse exemption and inheritance tax

Gifts between UK-domiciled spouses and civil partners are generally exempt from inheritance tax, whether made during lifetime or on death. There is also a facility, the transferable nil rate band, that generally allows any unused portion of the first spouse's inheritance tax nil rate band to be transferred to the surviving spouse's estate, and a similar transferable residence nil rate band where a home is passed to direct descendants.

These are factual features of the tax system rather than something a will drafter can vary, but they influence how couples plan their wills, particularly around whether to leave everything to each other outright or to use trusts. This is general information, not tax advice, and couples with larger or more complex estates should get advice from a solicitor or tax adviser.

Second marriages and blended families

Where one or both spouses have children from a previous relationship, leaving everything outright to the surviving spouse can mean those children ultimately receive nothing, since the surviving spouse is free to leave their own estate however they choose. Couples in this position often consider a life interest trust, which gives the survivor a right to live in the home or benefit from assets during their lifetime while preserving the ultimate capital for children from an earlier relationship.

This kind of arrangement needs to be drafted carefully to work as intended and is generally best handled with a solicitor rather than a simple template will.

Keeping wills up to date

Remember that getting married generally revokes any earlier will you had made, unless it was expressly made in contemplation of that marriage. If you divorce later, your former spouse is treated as having died before you for the purposes of gifts and executor appointments in your will, though the rest of the will remains valid.

Review your wills whenever your circumstances change materially, including having children, buying a property, or a change in either spouse's health or financial position.

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This guidance covers the law of England and Wales and is general information, not legal advice about your circumstances. The rules in Scotland and Northern Ireland differ.