**Blended Family** (noun) — A family structure formed when partners with children from previous relationships establish a household together, which may also include children from their current relationship, creating complex inheritance and estate planning considerations.
A blended family is what you have when you or your partner (or both) bring children from previous relationships into a new family unit. You might also have children together in the current relationship.
From an estate planning perspective, blended families create complexity. You might want to provide for your current partner while also protecting inheritances for your children from a previous relationship. These goals can conflict.
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Without careful planning, blended families face common problems: a will might unintentionally exclude children from a previous relationship, or assets might all go to a new partner who later changes their will and cuts out your children entirely.
Many people in blended families use testamentary trusts or life interest arrangements to balance these competing interests—perhaps giving a surviving partner the right to live in the family home for their lifetime, with the property passing to children after. There's no one-size-fits-all solution; it requires thinking through scenarios and being explicit about your intentions.
**Related terms:** [Testamentary Trust](/dictionary/testamentary-trust), [Life Interest](/dictionary/life-interest), Second Marriage, Family Provision Claim
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"My partner and I both have kids from previous marriages. I set up a testamentary trust in my will so my new wife can live in our house, but when she dies or moves out, it goes to my children from my first marriage."