When two people marry later in life or enter a second marriage with children, their legal and financial lives often combine faster than their planning does. One spouse may still have a will naming an ex-spouse as personal representative. Another may have beneficiary designations flowing only to children from a prior marriage. The new spouse assumes they are protected. The children from the prior marriage assume they are still first in line. Both assumptions can be wrong.
That gap between assumption and legal reality is where probate litigation tends to begin. And it is almost entirely avoidable.
The Problems That Show Up in Court
A newly blended family faces a recurring set of planning failures when the documents are not updated:
Old documents still name an ex-spouse or a fiduciary who no longer has a relationship with the family. Children from a prior relationship expect to inherit specific assets that the will leaves to a new spouse. The new spouse assumes that marriage alone guarantees full financial protection — in Florida, the elective share (30% of the augmented estate under Fla. Stat. § 732.201) provides a floor, but not the comprehensive protection most spouses expect. Stepchildren are informally treated like natural children but have no legal inheritance rights unless the will or trust specifically names them. Beneficiary designations on retirement accounts and life insurance have never been updated and still flow to an ex-spouse or to only one side of the blended family.
Florida Law on Divorce and Beneficiary Designations
Florida Statute § 732.507(2) automatically revokes will provisions benefiting a former spouse upon dissolution of marriage. That means if you divorce and die without updating your will, your ex-spouse does not inherit under the will. But this automatic revocation applies only to the will — not to beneficiary designations on life insurance policies, IRAs, 401(k)s, annuities, or payable-on-death accounts.
Those designations are governed by federal law and by the contracts with each institution. They must be updated manually. If your ex-spouse is still the primary beneficiary on your $400,000 retirement account and you remarry and die without changing that designation, the account pays to your ex-spouse. Your current spouse receives nothing from that account. This outcome surprises people every time. It should not — the rule is well established — but people assume their new marriage changes how those assets flow. It does not.
The Documents That Need to Be Reviewed
For a newly blended family, these are the documents and asset arrangements that should be reviewed promptly and updated to reflect present reality:
Last will and testament — naming beneficiaries and fiduciaries as they exist today, not as they existed in a prior marriage.
Revocable trust, if appropriate — trusts are often the right structure for blended families because they allow a surviving spouse to have use of assets during life while ensuring that whatever remains at the surviving spouse's death passes to the deceased spouse's own children. This structure (sometimes called a QTIP or marital trust) resolves many of the conflict points between a new spouse and children from a prior relationship.
Beneficiary designations on retirement accounts, life insurance, and annuities.
Deeds and account titling — joint tenancy with right of survivorship passes assets to the survivor automatically, regardless of what the will says. Make sure joint ownership matches your actual intent.
Durable power of attorney and health care documents — naming fiduciaries who are actually the right people for this chapter of your life.
Planning for a Family That Will Actually Exist
The most important conversation in blended family planning is the one most couples avoid: what does "fair" mean when there are children on both sides, and assets that both spouses brought into the marriage? Fairness means different things to a surviving spouse who needs liquidity and a set of stepchildren who expected to inherit their parent's share of the house they grew up in.
Good planning does not require perfect equality. It requires clear instructions that real people can follow without needing a court to interpret. A trust with specific terms about how a surviving spouse can use the marital assets and what passes to each set of children at the survivor's death is not complicated — it is specific. And specific instructions are how you avoid the collision between assumption and legal default.
