How the 2026 Estate Tax Landscape Changed for High-Net-Worth Families

How the 2026 Estate Tax Landscape Changed for High-Net-Worth Families

The estate tax clock that practitioners have been watching for years was reset in 2026. The TCJA's elevated exemption levels were set to sunset on January 1, 2026 — which would have cut the federal exemption roughly in half, from approximately $13.6 million per individual to around $7 million. The One Big Beautiful Budget Act (OBBBA) changed that trajectory.

Understanding what the OBBBA did — and what it didn't do — matters for any family with a taxable estate, because the difference between a well-timed plan and a reactive one can be measured in hundreds of thousands of dollars.

IMPORTANT NOTE TO PUBLISHER: Verify the specific OBBBA estate tax exemption figures and effective dates before publishing this post. The figures discussed here reflect the pre-publication understanding of the legislation as of drafting. Confirm exact exemption amounts, inflation-adjustment provisions, and any phase-in schedules with current authoritative sources prior to publication.

What the OBBBA Did to the Federal Exemption

The Tax Cuts and Jobs Act of 2017 doubled the federal estate and gift tax exemption and included a sunset provision returning it to pre-TCJA levels (adjusted for inflation) after December 31, 2025. For the past several years, practitioners have been advising clients to act before that sunset — use the elevated exemption through gifts or trust structures while it existed.

The OBBBA addressed this sunset. Rather than allowing the exemption to fall back to the approximately $7 million level, the legislation moved to make the elevated exemption permanent or extend it significantly. The specific exemption level and inflation-adjustment mechanism should be confirmed with your estate planning team against the final enacted legislation before any planning decisions are made.

What changed practically: the urgency of the pre-2026 "use it or lose it" gifting advice has shifted. The elevated exemption is no longer disappearing imminently. That changes the calculus for families who were considering large accelerated gifts — there's less pressure to act immediately and more ability to plan methodically.

The estate tax rate itself — 40% on the taxable estate above the exemption — was not changed by the OBBBA.

State Estate Taxes Remain a Separate Problem

Federal estate tax planning gets most of the attention, but state estate taxes can be the more immediate concern for families in the relevant states.

Approximately 12 states and the District of Columbia currently impose their own estate taxes. State exemptions are almost uniformly lower than the federal exemption — and several are dramatically lower. Massachusetts and Oregon have exemptions of $2 million. Illinois is $4 million. Washington State's exemption is $2.193 million (indexed). The OBBBA had no effect on state estate taxes.

A married couple with a combined estate of $8 million and a Washington State domicile may owe no federal estate tax — their estate is below the federal exemption — but face a significant Washington estate tax liability. With Washington's top marginal estate tax rate at 20%, the exposure can reach six figures.

For families with multi-state connections — primary residence in one state, vacation property in another, business interests in a third — domicile is a meaningful planning variable. Some states have aggressive domicile rules. Moving to a no-estate-tax state before death is a real planning strategy, but it requires genuine domicile establishment, not just a change of mailing address.

State-level planning is a distinct exercise from federal planning. Advisers and estate attorneys who work with clients near state exemption thresholds — even those well below the federal exemption — need state-specific expertise, not just federal tax fluency.

Annual Gifting: The Strategy That Works at Every Exemption Level

The annual gift tax exclusion allows any individual to give up to a per-donee limit per year without using any lifetime gift tax exemption. The exclusion is adjusted for inflation periodically. Verify the current 2026 exclusion amount with your tax adviser before planning.

At the current exclusion level, a married couple can gift to each of their children annually without touching their lifetime exemption. Over 10–15 years, a systematic annual gifting program can move hundreds of thousands — sometimes millions — of dollars out of a taxable estate.

Annual exclusion gifts don't require trusts, legal documents, or sophisticated planning. A check to each child or grandchild before year-end accomplishes it. The only requirement is that the gift be a present-interest gift — one that the recipient can use now — not a future interest gift.

For families with the capacity to gift, annual exclusion gifting is the lowest-friction estate reduction tool available. It doesn't require betting on a particular estate tax law, doesn't require irrevocable decisions, and produces a result regardless of where exemption levels land in the future.

Portability: The Election Most Surviving Spouses Miss

Portability is one of the most under-utilized and under-known provisions in federal estate tax law.

When a married person dies, their unused estate tax exemption doesn't simply vanish. The surviving spouse can elect to use the Deceased Spouse's Unused Exclusion (DSUE) — the deceased spouse's remaining exemption — by filing a timely estate tax return (Form 706), even when no federal estate tax is owed.

The timeline is critical: the portability election must be made on a Form 706 filed within 9 months of the date of death, with a 6-month extension available (bringing the total to 15 months). Miss that window without a court proceeding, and the DSUE is permanently lost.

This matters enormously at higher exemption levels. A spouse who dies with a $10 million estate in 2026, when the federal exemption is elevated, may have $3 million or more in unused exemption. If the surviving spouse doesn't file Form 706 to elect portability, those $3 million of additional exemption disappear — increasing the surviving spouse's eventual estate tax by potentially over $1 million.

The portability filing is not complex. What's complex is knowing it's required when no tax is owed and the estate is clearly below any tax threshold. Many surviving spouses — and their advisers — skip the 706 filing because "no tax is owed" when in fact the filing is necessary to preserve a valuable asset.

Planning Now — Not After Year-End

The most important estate planning insight isn't a specific number or strategy. It's the timing of the review itself.

Families with estates above $5 million should have their plans reviewed against current law and current asset values at least once a year. Annual reviews catch: asset values that have grown into a new planning tier, changes in state domicile, new asset acquisitions that create state planning issues, and legislative changes that alter the optimal structure.

For families with estates in the $5–15 million range, the question isn't usually whether to plan — it's which tools to prioritize and in what sequence. That conversation benefits from an adviser who specializes in high-net-worth planning and works alongside estate attorneys who do as well.

The most reviewed advisers working with high-net-worth families and estate planning are on Sam's List. Ian Weiner, CFP, CEPA specializes in estate and financial planning for clients with complex estates.

General educational content only. Not investment advice. Past performance does not guarantee future results. Consult a qualified financial advisor for guidance specific to your situation.