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We are a blended family
Standard estate planning was designed for the single-marriage family. Used in a blended family, it routinely produces unintended disinheritance — often of the children whose biological parent died first. This is preventable with the right structure, but the default does not work.
How a "fair" plan accidentally disinherits half the family
Almost every blended family ends up with some version of this if they use the standard "everything to my spouse" template:
1st spouse dies
Everything passes to surviving spouse via the will. Looks fair, looks simple, looks like what every couple does.
Surviving spouse owns 100%
They are now under no legal obligation to follow the deceased spouse's wishes about the kids from the prior marriage.
Surviving spouse updates their will
Often quietly, often years later. Often at the urging of their own biological children or a new partner.
Surviving spouse dies
Their will controls. Biological children get everything. Stepchildren get nothing.
Nobody intended this outcome. The wills did exactly what they said. But "everything to my spouse, then to my children" assumes the surviving spouse will honor the deceased spouse's wishes — and the law doesn't require them to.
Five structures that actually work
QTIP trust
Best for: Most blended families with significant assets
How: Assets pass into a trust at first death. Surviving spouse gets income for life. At second death, remainder goes to the deceased's biological children — not whoever the surviving spouse named.
Tradeoff: Surviving spouse doesn't have full control. More expensive to set up (real attorney required).
Direct bequests at first death
Best for: Simpler estates where the spouse is otherwise provided for
How: A portion of the estate (often 30-50%) goes directly to the deceased's biological children at first death. The rest goes to the spouse.
Tradeoff: Spouse inherits less. May be insufficient for their needs if estate is mostly the house.
Irrevocable life insurance trust (ILIT)
Best for: When you want a guaranteed inheritance for biological children regardless of what happens to the rest of the estate
How: Life insurance owned by the trust. At death, proceeds go directly to biological children, completely separate from spouse's inheritance.
Tradeoff: Premium costs. Irrevocable.
Beneficiary designations to bio kids
Best for: Stretching across multiple asset types simply
How: Name biological children directly on retirement accounts, life insurance, TOD/POD accounts. (Spouse must consent in writing for 401(k) beneficiaries other than themselves.)
Tradeoff: 401(k) spousal-consent requirement is a hurdle. Tax implications vary by account type.
Prenup or postnup
Best for: Couples bringing significant separate assets into the marriage
How: Defines what's separate, what's joint, and what each spouse commits to in their own estate plan.
Tradeoff: Emotionally difficult to negotiate. Requires separate legal counsel for each side.
Most blended families end up combining several of these — typically a QTIP trust for the bulk of assets, ILIT-funded life insurance for biological children, and explicit beneficiary designations on retirement accounts.
If you raised stepchildren, the law does not know
Stepchildren never inherit through intestacy
If you die without a will, your stepchildren get nothing — regardless of how long you raised them.
Vague terms in a will may exclude stepchildren
If your will says "my children" or "my descendants," courts often interpret these as excluding stepchildren who weren't legally adopted. Name them by name.
Adoption changes everything
A legally adopted stepchild is a child for all inheritance purposes — same as a biological child.
Verbal promises don't count
Telling your stepchildren "you're part of this family, you'll be taken care of" is meaningless legally. The document is what matters.
Three conversations to have before the documents are signed
With your spouse, before the documents are signed
"We need to plan for what happens to my kids — and to your kids — when one of us is gone. I want all the kids treated with love. Here is what I am thinking. What do you think?"
With your biological adult children
"Here is the plan we are putting in place. Here is what is set up to take care of you. I am telling you now so there are no surprises later. I am also telling you so that you understand we have planned for [stepparent] as well — they are not going to be left out, and they are not going to take everything from you."
With your stepchildren
"I want you to know what is and isn't in our estate plan, so you are not surprised. [Be specific about what you have done.] Whatever the document says, I want you to know what you have meant to me, and that is in a separate letter you'll receive at the same time."
Documents alone will not save a blended family from conflict. The combination of a properly structured plan plus explicit conversations is what works.
What to do this week
- • Find an attorney experienced specifically with blended family estate planning. Not general estate work — this is a specialty.
- • List every asset you own and identify which are separate (pre-marriage) vs. joint (acquired together).
- • For each asset, decide: does it go to your spouse, your biological children, or both?
- • Audit retirement account beneficiaries. Spouse consent is required for anyone other than the spouse on 401(k) plans.
- • Schedule the family conversations. All adult children, your spouse, the framework — not the dollar amounts.
- • Consider whether a QTIP trust is appropriate for your situation. Discuss with your attorney.
Read Chapter 17 of the book
The full chapter on blended families goes into far more detail on QTIP trust structure, the elective share trap, surviving spouse's remarriage scenarios, and specific situations like domestic partners and adult stepchildren. Get the book →
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