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CONTRIBUTED CONTENT: Why 'It will all work out' usually doesn’t in estate planning for blended families

by ROBERT J. GREEN/Kootenai Law Group
| August 19, 2026 1:00 AM

You remarried. Each of you has children from a prior marriage. You have talked about what happens someday, you trust each other completely, and you both assume the survivor will do right by all the kids.

That assumption is where most blended-family estate plans quietly fail.

The Trouble With Leaving Everything to Each Other

The simplest plan is to leave everything to the surviving spouse, then split whatever is left among all the children after the second death. It works, but only if the surviving spouse never changes course. Once you are gone, your spouse is free to rewrite their will, remarry, name new beneficiaries, or spend the assets down to nothing. Nothing about this type of plan binds them. Ten or fifteen years later, your children may receive nothing — rarely out of malice, usually because of a new marriage, medical costs, or relationships that faded without you there to hold them together. If you are ok with this, then no worries, but don’t let it happen accidentally.

Idaho's Rules Set the Starting Point

Idaho is a community property state. Your spouse already owns half of what the two of you accumulated during the marriage – regardless of whose name was on the paycheck, or the deed, or the account statement. What each of you already owned prior to the wedding day is separate property and yours to direct — but only if it stayed separate.

That is a bigger "if" than most people realize. Depositing a premarital account into a joint account, or using marital income to pay down the mortgage on a house you owned before the wedding, can create a community interest in it. That is how a home you always intended for your children ends up half belonging to your spouse.

Structures That Actually Hold

A marital trust. Your share funds a trust that supports your spouse for life, then passes to your children on the terms you wrote. Your spouse benefits from it but cannot redirect where it ultimately goes.

Separate treatment for separate assets. A premarital home, an inheritance, a business interest, or the family cabin can be carved out and left directly to your children while everything else supports your spouse.

Life insurance. Often the cleanest answer. The house and the retirement accounts go to your spouse; a policy provides for your children right away, rather than making them wait on a stepparent's lifetime.

A written property agreement. Idaho spouses can agree in writing about what remains separate and what becomes community. Settling that question while you are both here removes the argument later. A trust document can contain these provisions, or a separate document can be used outside of a trust.

Say It Out Loud

The plans that survive through the grief of a death are the ones the family already understands. Stepchildren who first learn the arrangement at the funeral tend to assume the worst. Those told in advance rarely end up in court. Such conversations can feel awkward now, but that is almost always better than a family dispute in a courtroom years from now.

The Bottom Line

Blended families need blended-family plans. "Everything to my spouse, then to the kids" is not a plan — it is a hope, and Idaho's community property rules add a layer most couples do not anticipate. If you and your spouse each have children from prior relationships, that fact alone is reason enough to sit down and review what you have.

My law firm is currently offering free telephonic, electronic, or in-person consultations about creating estate planning documents.

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Robert J. Green is an Elder Law, Wills, Trusts, & Estate Attorney and the owner of Kootenai Law Group, PLLC in Coeur d’Alene. If you have questions about estate planning, wills, trusts, powers of attorney, Medicaid planning, or VA Benefit planning, contact Kootenai Law at 208-765-6555, [email protected], or visit www.KootenaiLaw.com.

This has been presented as general information and not as legal advice. Do not engage in legal decision-making without the advice of a competent attorney after discussion of your specific circumstances.