Updated July 31, 2026. Quick answer: in a blended family with no will, the surviving spouse almost never “gets everything” — and the generic formula articles quote is wrong twice over. The Uniform Probate Code’s own text (§2-102(4)) cuts the spouse’s share specifically when the decedent leaves children who are not the survivor’s children — the exact blended-family case — and fewer than half the states even use the UPC formula. The rest split along a deeper fault line most articles never mention: whether your state is community-property or common-law changes the mechanics, not just the percentages.
The two systems, in one paragraph each
Community-property states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, Wisconsin): the survivor already OWNS half of everything acquired during the marriage — that half never enters the estate at all. Intestacy divides only the decedent’s half, and in several of these states the decedent’s community half passes to the spouse anyway — so the fight in a blended family is almost always over separate property: the house bought before the marriage, the inheritance kept apart. The mechanics, fully.
Common-law states: everything titled to the decedent is in play, and the spouse’s share follows the state’s formula — a dollar amount plus a fraction in UPC states, a flat fraction in others — with the blended-family reduction clause doing exactly what it sounds like. The children from the prior relationship take the remainder; if they are minors, through a court process nobody enjoys.
What actually decides most cases: the title, not the statute
Intestacy only reaches the PROBATE estate. Joint tenancy, TOD deeds, and beneficiary designations pass outside the split entirely — which is why the practical questions are who gets the house and whether it is separate property to begin with, and why stepchildren — who inherit nothing by default — depend completely on paperwork someone must actually do. What a will costs instead of all this: the honest number.
Blended families are the one case where ‘the law will sort it out’ fails everyone.
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