Official — IRS Rev. Proc. 2026-35
Federal Estate Tax Exemption for 2027
2027 is the first year the post-OBBBA exclusion moves. Congress set it as a flat statutory figure for 2026 and switched inflation indexing on only from the following year. The IRS has now published the first indexed amount, $15,480,000 per person, in its revenue procedure for 2027 inflation adjustments.
2026 vs 2027 basic exclusion amount
| Exclusion | 2026 | 2027 | Increase |
|---|---|---|---|
| Basic exclusion amount, per person | $15,000,000 | $15,480,000 | $480,000 |
| Married couple, with a portability election | $30,000,000 | $30,960,000 | $960,000 |
| Generation-skipping transfer exemption | $15,000,000 | $15,480,000 | $480,000 |
2026: the OBBBA §70106 statutory amount, as reported at IRS Rev. Proc. 2025-32 §2.14. 2027: IRS Rev. Proc. 2026-35 §3.44. The couple and GST rows follow from the per-person amount by statute. Applies to decedents dying during the year shown.
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Portability: the election that doubles it
The per-person figure above is what one estate can shelter on its own. Reaching the couple figure depends entirely on an administrative step taken at the first death, and two details decide whether it works:
It must be elected on Form 706
Filing is required to claim it even when the first estate owes nothing and would otherwise never file. Nothing about portability happens by default.
The inherited amount then stops growing
A DSUE is locked to the exclusion in force at the first death. The survivor's own exclusion keeps indexing; the inherited portion does not.
Put your own numbers through the federal estate tax calculator, and if life insurance is part of the estate, check whether the policy is inside it using the life insurance estate tax calculator.
Lifetime gifts draw on the same exclusion
Estate and gift tax share one unified exclusion, so anything you give away above the annual per-recipient allowance during life reduces what remains at death, dollar for dollar. That makes the gifting side of the picture inseparable from this one — the annual allowance, how gift splitting works, and what tuition and medical payments escape entirely are all covered on the 2027 gift tax exclusion page.
Methodology — how our projection compared
IRC §2010(c)(3)(B) fixes the arithmetic: multiply $15,000,000 by the growth in the chained consumer price index (C-CPI-U) between two 12-month averages, September 2024-August 2025 and September 2025-August 2026, then round to the nearest $10,000. Before the IRS published, this page ran that formula on BLS data. BLS never released an October 2025 index because of the 2025 federal funding lapse, and our headline filled the gap with the midpoint of September and November, which came out two rounding steps below the IRS amount. Averaging only the eleven published months instead gives exactly $15,480,000, so the IRS evidently left the missing month out.
Related 2027 references
- Gift tax exclusion 2027 — the annual per-recipient allowance and how it feeds this exclusion
- Tax brackets 2027
- Capital gains tax rates 2027
- AMT exemption 2027
Frequently asked questions
What is the estate tax exemption for 2027?
$15,480,000 per decedent, set by the IRS in Rev. Proc. 2026-35 §3.44 on November 5, 2026. That is $480,000 above the $15,000,000 that applies to anyone dying during 2026. Estates below the exclusion owe no federal estate tax at all, though a return may still be worth filing to preserve a surviving spouse's portability.
Why does 2027 have an inflation adjustment at all when 2026 did not?
Because 2026 is the statutory starting line. OBBBA (P.L. 119-21, §70106) rewrote IRC §2010(c)(3)(A) to state the exclusion as a flat $15,000,000 figure, and the indexing clause in §2010(c)(3)(B) only bites "in the case of any decedent dying in a calendar year after 2026", measured from a 2025 base year. The IRS said as much in its own words in Rev. Proc. 2025-32: the amount "will be adjusted for inflation for calendar year 2027 and future years". So 2027 is the first year the number moves, and it moves by ordinary inflation rather than by legislation.
How much can a married couple shelter in 2027?
Up to $30,960,000, but only if the paperwork is done. Portability is not automatic — the executor of the first spouse to die must file a complete Form 706 and affirmatively elect to transfer the unused exclusion, even when that estate is far too small to owe anything. Skip the election and the unused half is simply lost, which is the single most common and most expensive omission in this area.
Does an inherited DSUE amount grow with inflation before the second death?
No, and this is a frequent misunderstanding. Under §2010(c)(4) the deceased spousal unused exclusion is frozen at the exclusion in force when the first spouse died — a DSUE captured from a 2026 death stays worth $15,000,000 of shelter, not the $15,480,000 available to someone dying in 2027. Only the survivor's OWN basic exclusion keeps indexing. A couple who plan on two full inflating exclusions, rather than one inflating and one frozen, will overestimate what they can pass on.
What is the federal estate tax rate above the exemption?
40% at the top of the §2001(c) schedule. No inflation clause attaches to it, so it is the same in 2027 and will not move unless Congress acts. Only value above the exclusion is exposed, and because the unified credit absorbs the graduated lower brackets, what an estate actually faces is a flat 40% on the excess.
Does the generation-skipping transfer exemption match the estate exemption in 2027?
Yes. IRC §2631(c) defines the GST exemption as equal to the basic exclusion amount, so it tracks it exactly — $15,480,000 for 2027, and §3.44 of the revenue procedure says the basic exclusion amount is used to determine it. One important difference in practice: the GST exemption is not portable between spouses. Each person's must be allocated during life or at death by their own executor, so a couple relying on portability for estate tax still needs separate GST planning.
Do state estate taxes use the same exemption?
No — states that levy their own estate or inheritance tax set their own thresholds, and several are dramatically lower than the federal figure. An estate can owe nothing federally and still face a substantial state bill, which is why residency and property location matter as much as the headline federal number. Our state estate tax calculators cover the states that impose one.
Is the 2027 estate tax exemption official?
Yes. The IRS released it on November 5, 2026, with the rest of its 2027 inflation adjustments (news release IR-2026-133). What governs any particular estate is the amount in force on the date of death, so the figure applies to decedents dying from January 1 to December 31, 2027.
Sources
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