A new federal tax law established a $15 million basic estate-tax exclusion for each person in 2026 and kept that larger structure from expiring after a single year. For a married couple with effective portability planning, as much as $30 million can potentially pass before federal estate tax applies. That does not make inheritance entirely tax-free: state estate or inheritance taxes, income tax on retirement accounts, and capital-gains rules still operate separately. It does mean the federal estate tax now reaches a much smaller group than families expected when a lower exemption was scheduled to return.
The $15 million base replaced a scheduled tax cliff
The IRS’s controlling 2026 inflation-adjustment revenue procedure says the new law amended the tax code to set the basic exclusion amount at $15 million for calendar 2026. The same provision calls for inflation adjustments after 2026. Before the change, the temporarily enlarged exclusion was due to fall sharply, exposing more family businesses, farms, real estate, and investment portfolios to federal estate-tax filing and payment.
The exclusion is part of the unified estate-and-gift tax system. Lifetime taxable gifts use the same pool that shelters property at death. A person who has already made millions of dollars of taxable gifts does not receive a fresh $15 million on top of them; those gifts generally reduce the exclusion remaining for the estate. Annual gifts within the separate annual exclusion can operate differently, which is why the size and timing of prior transfers still belong in the calculation.
The IRS also set a $15 million generation-skipping transfer exemption for 2026. That parallel figure matters for transfers designed to benefit grandchildren or later generations, but it is governed by its own allocation rules. A plan that avoids estate tax at a child’s level can still create generation-skipping exposure if the exemption was not allocated correctly. The matching dollar amounts should not be mistaken for interchangeable tax accounts.
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Portability can double the shelter, but it requires a return
Married couples often describe the new threshold as $30 million, but that outcome is not automatic. Assets passing outright to a U.S.-citizen spouse generally qualify for the marital deduction, postponing estate tax. To preserve the first spouse’s unused exclusion for the survivor, the executor usually makes a portability election on a timely filed federal estate-tax return. Without that election, the unused amount may disappear.
The IRS’s Form 706 instructions explain the filing mechanics and valuation disclosures. A return may be worthwhile for portability even when no tax is due and the estate is far below $15 million. That is especially true when a surviving spouse is younger, owns appreciating assets, or may receive a large inheritance later. The cost of valuation and preparation buys access to the deceased spouse’s unused exclusion, not merely compliance with a current tax bill.
Portability also has limits. The transferred amount is generally the unused exclusion of the surviving spouse’s last deceased spouse, and it does not transfer the deceased spouse’s generation-skipping exemption. Trust planning may still be useful for asset control, creditor concerns, remarriage protection, state taxes, or growth outside the survivor’s estate. The higher federal ceiling reduces tax pressure; it does not erase those nontax reasons for a plan.
Most inheritances remain shaped by taxes other than the estate tax
The IRS’s estate-tax overview defines the gross estate broadly, including cash, securities, real estate, insurance interests, trusts, annuities, business interests, and other property. Deductions, debts, charitable transfers, and prior taxable gifts then affect the taxable estate. A household cannot decide whether it is below $15 million by looking only at brokerage and bank statements.
Even estates comfortably beneath the federal exclusion can leave heirs with income-tax decisions. Traditional IRA and 401(k) distributions are generally taxable to beneficiaries, and inherited accounts follow distribution deadlines that are separate from estate tax. Appreciated property may receive a basis adjustment at death, while gifts made during life usually carry the donor’s basis. Choosing between a lifetime gift and an inheritance can therefore change capital-gains tax even when neither transfer creates estate tax.
State law is the other remaining fault line. Some states impose an estate tax at thresholds far below the federal amount, and a few levy inheritance tax based on the recipient’s relationship to the deceased. Residency, the location of real estate, and the heir’s relationship can therefore matter after the federal return shows no tax. The federal $15 million figure can shield more family wealth from Washington while leaving a state bill untouched. The law’s lasting effect is a narrower federal tax, not a universal tax exemption for every inheritance.
The larger ceiling changes which families need tax-driven planning, but not which families need an estate plan. Beneficiary designations, powers of attorney, trust terms, business succession, and liquidity can decide who receives property and whether it must be sold. For the comparatively small number near the new threshold, the $15 million base supplies breathing room. For everyone else, its chief value may be clearing away a federal tax fear so the plan can focus on control, timing, and the taxes heirs are actually likely to face.
This article was produced with AI assistance and reviewed by The Money Overview editorial team.
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