Blended family estate planning

When you marry someone with children from a prior relationship, or have children of your own from before, the standard "everything to my spouse" estate plan stops working. It works for first-marriage families because the surviving spouse is also the parent of the kids, and the assets eventually flow to the children. In a blended family, "everything to my spouse" can mean nothing for your kids.

The mistake that disinherits your children

Suppose you and your second spouse each have two children from prior marriages. You leave everything to your spouse outright. Your spouse leaves everything to their children — not yours, because they're not your spouse's legal heirs. Twenty years later, your kids inherit nothing.

This isn't malice. It's the mathematics of marriage and inheritance. Once you transfer assets to a spouse outright, the assets are theirs to leave to anyone they choose. The kids you intended to provide for receive nothing because the will that would have provided for them was overwritten by your spouse's later will.

Three patterns that work

1. QTIP Trust (Qualified Terminable Interest Property). Your assets at death go into a trust. The trust pays your surviving spouse income for life — and may distribute principal for health, education, maintenance, and support. When your spouse dies, the principal goes to your children. Your spouse is supported. Your children are not disinherited. The QTIP gets a marital-deduction tax treatment so estate tax is deferred until the second spouse dies, which is the default outcome for any married couple.

The downsides: it's a trust, so there's annual tax filing during the spouse's lifetime, and the spouse doesn't have full control over the assets. For some couples that's the point. For others it's a deal-breaker.

2. Direct gifts to children at first death, residuary to spouse. Simpler structurally. Your will leaves specific assets directly to your children — a life insurance policy, a retirement account, a percentage of your investments — and the remainder to your spouse. Your kids inherit something at your death rather than waiting for your spouse to also die. Your spouse inherits the rest outright.

Trade-offs: less ongoing administration, but no protection against your spouse needing the assets you set aside (e.g., a major medical event after you die). The kids get their share now and don't depend on the spouse not changing their will.

3. Joint trust with separate sub-trusts. Some couples use a joint revocable trust during life. At first death, the trust splits — assets pass to a "Decedent's Trust" that benefits the spouse during life and the decedent's children at the spouse's death, plus a "Survivor's Trust" the spouse controls outright. Common in California and other community-property states.

Beneficiary designations are the same problem doubled

Retirement accounts, life insurance, and TOD/POD bank accounts pass by beneficiary form, not by your will. If your IRA beneficiary form says "100% to my spouse," the QTIP language in your will doesn't help — the IRA goes to your spouse outright.

To redirect retirement-account flows in a blended family, the beneficiary form needs to name the QTIP trust (or whatever structure you've set up). This gets technical because of the SECURE Act's rules on inherited IRAs and "see-through trust" requirements. Don't DIY the QTIP-as-IRA-beneficiary; this is one of the few places where attorney drafting really matters.

Talk to the kids — and the spouse

The biggest predictor of a blended-family will being challenged isn't the legal structure. It's whether the family members had any conversation about what was in it.

Surprises in a will are how blended families end up in court. The conversation is uncomfortable; the lawsuit is worse. The minimum:

• Tell your spouse what your will does. If you're using a QTIP, walk through what it means.
• Tell adult children that you've made a plan and that you expect them to be civil to your spouse during their life.
• If you have unequal distributions among children — say, one child got significant lifetime gifts you're "evening up" — write a letter explaining the reasoning. Keep it with the will.

Prenups and postnups in the picture

If your second marriage was preceded by a prenup that addressed estate matters, the prenup constrains what the surviving spouse can claim. A prenup that waives elective share rights gives you more freedom in the will. Without one, the surviving spouse can usually elect to take a statutory share (usually one-third to one-half of the estate) regardless of what your will says.

A postnup — same idea, executed during marriage — can serve the same purpose. Both should be drafted by attorneys; both should be updated when financial situations change.

What to do this week

If you're in a blended family without a current estate plan:

1. List all assets and their current beneficiaries (will, beneficiary forms, joint titling).
2. Identify which assets currently pass to your spouse outright and which to your children.
3. Decide whether the result — your spouse owns everything for life and gets to redirect at their death — is what you actually want.
4. If not, the QTIP, direct-to-kids, or joint-trust structures are the standard tools. Talk to a planner who has done blended-family work; this is not a generic-template situation.

The QTIP or its equivalents have been around for decades for exactly this reason. They're not a workaround. They're the standard answer to a standard problem in modern marriage.