From 24/7 Wall St. · Jake FitzGerald · · 2m
Estate Tax Rule Lets Spouse Inherit Unlimited Wealth Tax-Free
Married couples can pass unlimited wealth to spouses tax-free at first death, but second death taxes may hit $6 million.
In brief
Married couples can pass unlimited wealth to spouses tax-free at first death, but second death taxes may hit $6 million. Married couples using estate tax marital deduction avoid federal tax at first death but face up to $6 million tax at second death if not structured properly. Originally reported by 24/7 Wall St..
Marital Deduction Basics
Federal estate tax law lets married people leave any amount to a surviving spouse with no federal tax due at first death.
2027 Exemption Increase
The IRS raised the basic estate tax exemption to $15,480,000 for 2027, up from $15,000,000 in 2026.
How the Deduction Works
The marital deduction pushes estate tax to the second death by removing assets from the first estate and adding them to the second.
2024 Tax Data
In 2024, 7195 estate tax returns reported $248,944,039,000 in gross estates with only 2663 paying $23,313,220,000 in tax.
Which Transfers Qualify
Property passing to the spouse qualifies for the deduction, but terminable interests and noncitizen spouses without a QDOT do not.
QDOT Requirements
A qualified domestic trust requires a U.S. citizen trustee, tax withholding rights, and election under § 2056A(a)(3) to qualify for the deduction.
QTIP Trusts for Blended Families
Qualified terminable interest property trusts let a spouse receive income annually while controlling who inherits the remainder.
Worked Example: $6 Million Gap
Leaving $40 million directly to a spouse at first death avoids tax but costs $6 million in tax at second death without portability election.
Mistakes That Waste Exclusion
Not filing on time, ignoring asset growth, or funding QDOTs too late can waste the first spouse’s tax exclusion.
Questions to Choose Structure
Four questions decide the best structure: estate size, citizenship, children from prior marriage, and asset growth potential.
Why Trusts Work Poorly
Trusts work poorly for couples below the exemption who want simplicity and for survivors needing full control of assets.
Paperwork Challenges
Stale beneficiary forms, untitled accounts, and unfunded trusts are the most common pitfalls for families planning estates.
What matters most
Married couples using estate tax marital deduction avoid federal tax at first death but face up to $6 million tax at second death if not structured properly.
