
Wills for Blended Families
How to write a will that protects all members of your blended family, including stepchildren and children from previous relationships.
The challenge for blended families
Blended families — where one or both partners have children from previous relationships — face unique estate planning challenges. Without careful thought, it's easy for someone important to miss out.
The most common concern: how do you provide for your current partner while also ensuring your children from a previous relationship are protected?
Why standard mirror wills may not work
With a standard mirror will, each partner leaves everything to the other, then to their children. The problem arises when the first partner dies:
- Everything passes to the surviving partner
- The surviving partner now owns the entire estate
- They can change their will to exclude the deceased's children
- The deceased partner's children may inherit nothing
This isn't necessarily intentional — the surviving partner might remarry, have more children, or simply drift away from their stepchildren over time.
Options for blended families
Life interest trusts
A life interest trust (sometimes called a right-to-occupy trust) lets the surviving partner live in and benefit from the family home during their lifetime, while ensuring it eventually passes to your children.
For example: "My partner can live in our home for as long as they need, but when they die or move out, the property passes to my children."
This protects both your partner and your children.
Flexible life interest trusts
These give your trustees more discretion. They might allow the surviving partner to downsize and access some capital, while still protecting the majority for your children.
Specific gifts and residuary split
You can leave specific assets directly to your children (bypassing the surviving partner) and divide the residuary estate differently. For example:
- Your share of the property → held in trust for your partner's lifetime, then to your children
- Your savings → directly to your children
- Personal possessions → split as you choose
Including stepchildren
Stepchildren have no automatic right to inherit under the intestacy rules unless they've been legally adopted. If you want your stepchildren to benefit from your estate, you must specifically include them in your will.
You can leave stepchildren the same gifts as biological children, or different amounts — it's entirely your choice. The key is to make your wishes explicit.
Practical tips for blended family wills
Talk to your partner
Estate planning works best when both partners are open about their wishes. Discuss:
- How you want to provide for each other
- What each set of children should receive
- Whether to use trusts for protection
- Who should be executors (sometimes a neutral professional is best)
Be specific
Ambiguity is the enemy of blended family wills. Name every beneficiary clearly, specify exact shares, and explain any trusts in plain language.
Consider separate wills
Mirror wills aren't always appropriate for blended families. Each partner may need a separately drafted will to address their individual circumstances and children.
Review regularly
Blended family dynamics change. Children grow up, relationships evolve, and financial circumstances shift. Review your will every few years or after any significant life event.
Getting it right matters
Blended family wills require more thought than standard wills, but they don't have to be complicated. The most important thing is to make your wishes clear, protect the people you care about, and avoid leaving decisions to the intestacy rules — which won't serve a blended family well.
Related guides

Simple Will vs Mirror Wills
The differences between a simple will and mirror wills, and how to decide which is right for you and your partner.

Can You Disinherit Someone?
Whether you can legally exclude someone from your will in England and Wales, and what claims they might make.

What Is a Codicil?
What a codicil is, when to use one, and when it's better to write a new will instead.
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