Federal Estate Tax Exemption 2025: What $13.99 Million Really Means

The federal estate tax exemption 2025 is $13,990,000 per individual. That is the amount you can pass at death before the federal estate tax applies. The IRS set this figure in its 2025 inflation adjustment release, raising it from $13.61 million for 2024. The IRS estate tax filing-threshold table lists the same $13,990,000 for anyone who dies during the 2025 calendar year. A married couple effectively gets two of these, which is where the roughly $27.98 million combined figure comes from.

The way the exemption works is less obvious than the headline number suggests. The law does not hand you a literal $13.99 million deduction. Instead it gives you a unified credit, which is the dollar amount of tax that the exemption would generate. The IRS explains that a single unified rate schedule applies to your cumulative lifetime taxable gifts plus your taxable estate. The result is a tentative tax. Then the unified credit is subtracted. The credit is sized so that the first $13.99 million of combined gifts and estate produces zero net tax in 2025.

Walk through the calculation. Suppose someone dies in 2025 with a gross estate of $20 million. The executor first totals everything: cash, brokerage accounts, real estate, life insurance the decedent owned, business interests, and so on, all at fair market value on the date of death. Say that totals $20 million. The estate then subtracts allowable deductions: debts, funeral and administration expenses, and anything passing to charity or to a surviving spouse. Assume $500,000 in debts and expenses and no charitable or marital transfers. The taxable estate is $19.5 million. The estate then adds back any lifetime taxable gifts, but assume there were none here. The federal estate tax exemption 2025 of $13.99 million shelters the first $13.99 million. The remaining $5.51 million is taxed at the 40% top rate, producing about $2.2 million of federal estate tax.

The exemption is indexed for inflation, which is why it climbs most years. For context, the federal estate tax exemption 2025 of $13.99 million followed $13.61 million in 2024, $12.92 million in 2023, and $12.06 million in 2022. The 2017 Tax Cuts and Jobs Act roughly doubled the base, and inflation pushed it up from there. Each year the IRS publishes the new amount in the fall, applying to deaths in the following calendar year. Because the number resets every January, the year of death controls which exemption your estate gets. Someone who dies on December 31, 2025 uses the $13.99 million figure, while someone who dies the next day, on January 1, 2026, gets the $15 million figure. One day changes the shield by more than a million dollars.

It also helps to separate the gross estate from the taxable estate, because people conflate them. The gross estate is the raw total of everything you own. The taxable estate is what is left after deductions and after adding back lifetime taxable gifts. The exemption is measured against that taxable figure plus the gifts, not against the gross. So a $16 million gross estate with $3 million of mortgages and charitable bequests may have a taxable base well under the exemption, owing nothing, while a $14 million gross estate with no deductions and $2 million of prior gifts may owe tax. The deductions and the gift history matter as much as the headline net worth.

A common mistake is treating the federal estate tax exemption 2025 as something you have to claim or elect during life. You do not. It applies automatically at death to your estate. What you can lose by inaction is the second spouse’s exemption through portability, which does require a filing. Another frequent error is forgetting that life insurance you own is part of your gross estate. A $5 million policy you own outright counts toward the $13.99 million, even though it pays out tax-free to your heirs for income tax purposes. People with large policies are often closer to the exemption than they think. Retirement accounts are the same story. A $4 million IRA is fully inside the gross estate for estate-tax purposes, on top of the income tax the heirs will owe as they draw it down, so large retirement balances quietly push estates toward the line.

One more point that trips people up. The federal estate tax exemption 2025 is shared with the gift tax. Every dollar of lifetime exemption you use on large gifts is a dollar less available at death. The annual gift exclusion of $19,000 per recipient for 2025 is separate and does not reduce the lifetime number, but gifts above that annual amount do. So someone who gave away $3 million in taxable gifts during life would have about $10.99 million of exemption left at death in 2025, not the full $13.99 million. This is why the gift side and the estate side have to be planned together rather than in isolation. A family that makes large gifts without tracking the running total can be surprised at death to find the remaining exemption is much smaller than the current-year headline number.

Looking ahead, the number rises again. Starting in 2026 the exemption is $15 million per person under the One Big Beautiful Bill Act, indexed after that. So the 2025 figure is a snapshot, not a permanent ceiling. If your estate is anywhere near the exemption, the right move is a current valuation and a conversation with a CPA, because the gap between owing nothing and owing 40% can turn on a single asset that was undervalued or overlooked. Read our tax strategy guides for more on planning around large estates, and bring a current balance sheet so the numbers reflect what you actually own today rather than what you owned when you last looked.

One last framing point on the federal estate tax exemption 2025. It is per person, not per couple and not per heir. The number of children or grandchildren you leave assets to does not change your exemption. A parent with one child and a parent with five children each get the same $13.99 million shield in 2025. Splitting an estate among many heirs spreads the inheritance but does nothing to lower the estate tax, because the tax is computed on the estate before it is divided. This is a frequent misunderstanding, and it is worth stating plainly: more beneficiaries does not mean more exemption.

Portability lets a surviving spouse use whatever federal estate tax exemption the first spouse did not use. The unused amount is called the deceased spousal unused exclusion, or DSUE. It is the reason a married couple can shield close to $27.98 million in 2025 instead of just one exemption. But portability does not happen on its own, and that is the single most expensive misunderstanding in estate planning.

Start with how the unlimited marital deduction creates the issue. When the first spouse dies, anything left to a U.S.-citizen surviving spouse passes free of estate tax, with no limit. The IRS allows this marital deduction as a reduction in arriving at the taxable estate. That is good for the moment, but it means the first spouse’s own federal estate tax exemption goes unused, because nothing was taxable in that estate. Without a fix, that exemption simply disappears.

Portability is the fix. The Form 706 instructions explain that the executor of the first spouse’s estate can elect to transfer the DSUE to the survivor. To make the election, the estate must file a federal estate tax return, Form 706, even if the estate is small and owes no tax. The election is made by timely filing that return and not opting out. Once made, the survivor adds the DSUE to their own exemption.

Here is a worked example. Husband dies in 2025 having used $2 million of his exemption on past taxable gifts. His remaining federal estate tax exemption is $11.99 million. He leaves his entire $8 million estate to his wife, so the marital deduction wipes out any tax and none of his $11.99 million remaining exemption is consumed at death. His executor files Form 706 and elects portability. The wife now has her own 2025 exemption plus his $11.99 million DSUE. If she dies later that same year with a $20 million estate, she can shelter $13.99 million of her own exemption plus $11.99 million of his DSUE, for about $25.98 million of combined coverage. Her $20 million estate owes no federal estate tax.

Now flip it. Same facts, but the husband’s executor does not file Form 706 because the estate was under the filing threshold and nobody saw the need. His $11.99 million of unused exemption is gone. When the wife dies with $20 million, she has only her own $13.99 million exemption. The $6.01 million above it is taxed at 40%, roughly $2.4 million of federal estate tax that simple paperwork would have avoided. That is the cost of skipping a return. The Form 706 in the first scenario probably cost a few thousand dollars in preparation fees. The decision to skip it in the second scenario cost the family $2.4 million. Few financial decisions have a return on investment like filing a portability return.

There is a relief valve. The IRS provides a simplified late portability election for certain estates that were not otherwise required to file, generally allowing the election within five years of death under Revenue Procedure 2022-32. It works in many cases, but it is not guaranteed and it adds cost and delay. Treating it as a backstop rather than a plan is the safer approach. The reliable move is to file Form 706 and make the election on time, within nine months of death plus any extension. The extension to file is requested on Form 4768, which buys another six months, but the election still has to be made on the eventual return.

A non-citizen surviving spouse changes the picture, and this catches international families. The unlimited marital deduction does not apply when the surviving spouse is not a U.S. citizen, because the law worries that the surviving spouse could leave the country with the assets untaxed. Instead, the estate generally has to use a qualified domestic trust, a QDOT, to defer the tax. New York couples with one foreign-citizen spouse run into this regularly, and the planning is different from the standard portability route. If that describes your household, the marital deduction you were counting on may not be available without the trust structure in place.

A few more practical notes. The DSUE is locked at the first spouse’s death and does not grow with inflation the way a living person’s exemption does. So a widow who inherits an $11.99 million DSUE in 2025 still has exactly $11.99 million of DSUE years later, even though her own exemption has climbed with inflation. Only the most recent deceased spouse’s DSUE is available, so a survivor who remarries and outlives a second spouse cannot stack DSUE from both. And the DSUE applies only to the federal estate tax exemption, not to state estate taxes. New York, for instance, does not allow portability of its state exclusion at all, which surprises couples who assumed the federal rule carried over. We cover the state side in our death tax guide.

Timing the second death also matters more than people expect with the DSUE. Because the DSUE is frozen at the first spouse’s death while the survivor’s own exemption keeps rising with inflation, a survivor who lives many years accumulates a growing personal exemption on top of a fixed DSUE. A widow who inherited an $11.99 million DSUE in 2025 and dies in, say, 2035 will have her own much-larger inflation-adjusted exemption plus that locked $11.99 million. The two pieces behave differently over time, and any projection of a survivor’s estate tax has to treat them separately rather than lumping them into one growing number.

The takeaway is procedural, not strategic. The federal estate tax exemption for a couple is generous, but capturing both halves requires a filed return at the first death. If you have lost a spouse recently, the portability clock is running, and a CPA can tell you whether a Form 706 makes sense for your situation. The downside of filing when you did not strictly need to is modest. The downside of not filing when you should have can be a seven-figure tax years later. For a surviving spouse whose combined assets are anywhere near a single exemption, the default answer should be to file and elect, then revisit later if circumstances change. It is far easier to have the DSUE and not need it than to need it and not have it.

The One Big Beautiful Bill Act, known as OBBBA, set the federal estate tax exemption permanently at $15 million per individual starting in 2026, indexed for inflation after that. It removed the scheduled drop that had been hanging over estate planning for years. The IRS estate tax table now shows $15,000,000 for deaths in 2026, up from the federal estate tax exemption 2025 figure of $13.99 million. So the exemption went up, and the cliff went away.

To understand why this was such a big deal, you have to know what it replaced. The 2017 Tax Cuts and Jobs Act doubled the estate tax exemption, but only temporarily. The doubling was written to expire at the end of 2025. On January 1, 2026, the exemption was scheduled to revert to its pre-2018 level of $5 million, adjusted for inflation, which would have landed somewhere around $7 million per person. The IRS had stated that the basic exclusion amount was due to revert to its pre-2018 level in 2026. For families with estates between roughly $7 million and $14 million, that sunset meant the difference between owing nothing and owing 40% on millions.

That looming cliff drove a wave of planning. Wealthy families rushed to make large gifts before the end of 2025 to lock in the higher exemption while it lasted. The IRS had even confirmed, in its anti-clawback regulations, that gifts made under the higher exemption would not be penalized if the exemption later dropped. So the strategy was real: use it before you lose it. People set up trusts, made multimillion-dollar gifts, and restructured holdings, all racing the 2025 deadline. Estate attorneys and CPAs spent 2024 and early 2025 fielding calls from clients who wanted to gift assets to spousal lifetime access trusts and other vehicles before the window closed.

Then OBBBA, signed in July 2025, changed the answer entirely. Instead of dropping to about $7 million in 2026, the exemption rose to $15 million and was made permanent and indexed. The federal estate tax exemption 2025 of $13.99 million was not the last gasp of a generous era, it was a step on the way up. The 40% top rate stayed in place, and the basic structure of Form 706, portability, and the marital deduction was untouched. What changed was the size of the shield and the certainty around it.

Here is what that means in numbers. Consider a widow with a $13 million estate who dies in early 2026. Under the old sunset, with a roughly $7 million exemption, about $6 million would have been exposed to the 40% rate, an estate tax near $2.4 million. Under OBBBA’s $15 million exemption, her entire $13 million estate is covered and she owes nothing. The law moved her from a multimillion-dollar bill to zero. That is the practical effect for estates in the gap zone, the band between the old sunset level and the new permanent level.

For families who already did aggressive 2025 gifting in anticipation of the sunset, the change is bittersweet. The planning was not wrong given what was known at the time, and gifts removed future appreciation from the estate, which still has value. Assets that were worth $5 million when gifted and grow to $9 million later have moved $4 million of appreciation out of the taxable estate entirely, and that benefit survives regardless of what the exemption does. But some of the urgency turned out to be unnecessary, and assets given away cannot easily be pulled back. A client who gifted the family business to a trust to beat the deadline cannot un-gift it now that the exemption is higher.

The generation-skipping transfer tax exemption moved in step with the estate exemption, which matters for families using dynasty trusts. The GST exemption, which shelters transfers to grandchildren and more remote descendants from a separate 40% tax, tracks the same $13.99 million in 2025 and $15 million in 2026 figures. Families who set up multi-generational trusts allocate GST exemption to them, and the higher permanent number means more wealth can be parked in those trusts to grow for grandchildren without a second layer of transfer tax. Coordinating the estate exemption and the GST exemption is part of any serious plan at this level.

This is a good reminder that planning around a scheduled law change always carries the risk that the law changes again. A common mistake going forward is assuming the federal estate tax exemption 2025 and 2026 numbers are frozen forever. They are permanent in the sense that there is no scheduled sunset, but Congress can revisit any tax law, and a future administration could lower the exemption again. Permanent in tax law means until the next bill. Building a plan that only works at a $15 million exemption, with no flexibility if it drops, repeats the same mistake that caught the 2025 sunset planners.

The other mistake is letting the higher federal number lull you into ignoring state estate taxes, which OBBBA did nothing to change. A New York family is still looking at a state exclusion around $7 million, less than half the federal figure, regardless of what happened federally. We dig into that in our state tax guides. The federal estate tax exemption 2025 and the new $15 million figure are the headline, but for most high-net-worth families in high-tax states, the state rules are the binding constraint. If your planning was built around the 2025 sunset, it is worth revisiting now that the cliff is gone, because the assumptions underneath it have changed even if your goals have not.

For most American families, the practical effect of OBBBA is no effect at all, and that is worth saying. With a $15 million per-person exemption, an estate of $30 million for a married couple is fully covered, which means the overwhelming majority of households will never file a federal estate tax return. The law concentrated the estate tax even more tightly on the very wealthiest estates. If you are reading this and your net worth is in the low single-digit millions, the federal estate tax is not your concern, though state estate tax in places like New York still might be.

Calculating the federal estate tax on a $20 million estate is mostly arithmetic once you understand the steps. The federal estate tax exemption 2025 of $13.99 million shelters the first $13.99 million, and the 40% top rate applies to what is above it. But the gross-to-taxable journey has several stops that change the answer, so let’s walk a realistic $20 million estate from start to finish.

Step one is the gross estate. The IRS defines the gross estate as everything you own or have an interest in at death, valued at fair market value on the date of death. For our example, assume a single individual who dies in 2025 with: a $9 million primary residence and vacation home, $7 million in brokerage and retirement accounts, $3 million in a closely held business interest, and a $1 million life insurance policy they owned. That totals $20 million gross.

Step two is deductions. The estate subtracts debts, funeral and administration expenses, and any transfers to charity or a surviving spouse. Assume $400,000 in mortgages and debts, $300,000 in administration and legal costs, and no charitable or marital transfers because this person was unmarried. Deductions total $700,000. The taxable estate is $20 million minus $700,000, or $19.3 million.

Step three is adding back lifetime taxable gifts. The unified system adds adjusted taxable gifts back to the taxable estate before computing the tentative tax. Suppose this person made $1 million in taxable gifts during life, above the annual exclusions. The base for computing the tentative tax becomes $19.3 million plus $1 million, or $20.3 million.

Step four is the tentative tax. The unified rate schedule tops out at 40% for amounts over $1 million of taxable transfers, and because this estate is well into the millions, effectively the whole base is taxed near 40%. The tentative tax on $20.3 million is roughly $8.065 million. From this you subtract the gift tax that would have been payable on the lifetime gifts, but since those gifts used exemption rather than paying tax, the mechanism is the unified credit.

Step five is the unified credit, which represents the federal estate tax exemption 2025. The credit shelters $13.99 million of transfers. But remember the $1 million of lifetime gifts already used $1 million of exemption. So the exemption remaining at death is $13.99 million minus $1 million, or $12.99 million. The tax on $20.3 million of total transfers, less the tax sheltered by $13.99 million of total exemption, leaves tax on $20.3 million minus $13.99 million, or $6.31 million, taxed at 40%. That produces about $2.524 million of federal estate tax.

Now simplify to the version most people picture: a single person dies in 2025 with a clean $20 million taxable estate, no prior gifts, no debts. The federal estate tax exemption 2025 covers $13.99 million. The remaining $6.01 million is taxed at 40%, producing $2,404,000 of federal estate tax. That is the clean headline number for a $20 million estate. Our earlier example came out higher only because of the added-back lifetime gifts and the lower remaining exemption. The lesson is that two estates of the same $20 million size can owe very different amounts depending on what happened during life and what deductions are available at death.

The estate also has to come up with the cash, and that is its own problem when the wealth is illiquid. A $20 million estate that is mostly a closely held business and real estate may owe $2.4 million in federal tax due nine months after death, with no easy way to raise it. That is why families with concentrated, illiquid wealth sometimes buy life insurance held in an irrevocable trust specifically to pay the estate tax, or use the installment payment option under Internal Revenue Code section 6166 for the business portion. Without planning, heirs can be forced to sell the business or the property at a discount just to pay the tax, which is the outcome the planning is meant to prevent.

A common mistake in this calculation is forgetting the life insurance. People assume a policy paying out tax-free to heirs is also outside the estate tax. It is not, if the decedent owned the policy. The $1 million policy in our example pushed the gross estate up and added $400,000 of tax at the 40% rate. Holding life insurance in an irrevocable life insurance trust is one way families keep it out of the taxable estate, though that requires planning well before death and a transfer made more than three years before death to avoid the look-back rule. Another mistake is undervaluing a closely held business or real estate, which invites an IRS challenge and can move the taxable estate by millions. A defensible appraisal is worth its cost when a single valuation point swings the tax by hundreds of thousands of dollars.

The married version looks different. If our $20 million estate belonged to a married person who left everything to a spouse, the marital deduction would zero out the tax at the first death, and the survivor’s estate would face the question later with two exemptions potentially available through portability. For a single person, there is no marital deduction and no second exemption, so the $13.99 million federal estate tax exemption 2025 is the whole shield. That is why unmarried people with large estates feel the tax more sharply than married couples of equal wealth. If you are working through numbers like these for a real estate, a CPA should review the valuations and the gift history before anyone signs Form 706, because the inputs drive the answer more than the rate does. See our tax strategy consulting for how we approach estates of this size, and bring the appraisals and gift records to the first meeting so the math starts from real figures.

One detail that changes the heirs’ side of the ledger is the step-up in basis. Assets in the taxable estate generally get their income-tax basis reset to fair-market value at death, so heirs who later sell pay capital gains only on appreciation after the date of death. The $20 million estate that owes $2.4 million of estate tax still hands its heirs assets with a fresh, higher basis. Estate tax and income tax are separate systems, and a plan that gifts assets away during life to dodge estate tax can forfeit that basis step-up, sometimes trading a 40% estate tax for a larger capital gains bill down the road. The two have to be weighed together.

Yes, you can owe New York estate tax while owing nothing federally, and it happens more than people expect. The reason is that New York’s exclusion is roughly half the federal estate tax exemption 2025. For deaths in 2025, the New York basic exclusion amount is $7,160,000, rising to $7,350,000 for 2026 deaths. The federal number is $13.99 million in 2025 and $15 million in 2026. So an estate between roughly $7 million and $14 million can clear the federal exemption entirely and still land squarely in New York’s tax.

This gap surprises people because they hear the federal exemption is high and assume they are safe. A retired couple in Westchester with a paid-off house worth $2 million, $5 million in investments, and a $1 million insurance policy is at $8 million for one of them. That is comfortably under the federal estate tax exemption 2025 of $13.99 million, so no federal tax. But $8 million is above New York’s $7.16 million exclusion, so New York wants a return and a check. The federal headline gave them false comfort while the state quietly held a much lower line.

New York’s cliff makes it worse. In most of the tax world, an exemption shelters the first dollars and you are taxed only on the excess. New York does not work that way once you go far enough over. If your taxable estate exceeds the state exclusion by more than 5%, you lose the exclusion entirely and the state taxes the whole estate from the first dollar. The New York Department of Taxation and Finance administers this through Form ET-706. Cross the cliff and the marginal effect is brutal: a small amount of extra estate value can trigger tax on millions that were previously sheltered.

Here is the cliff in numbers for a 2025 death. The exclusion is $7,160,000. The cliff sits at 105% of that, about $7,518,000. An estate of exactly $7,160,000 owes no New York estate tax. An estate of $7,500,000, just under the cliff, owes New York tax only on the amount over the exclusion, a modest bill. But an estate of $7,600,000, just over the cliff, loses the exclusion entirely and is taxed on the full $7,600,000. That last $100,000 of estate value can cost well over $600,000 in New York estate tax. It is one of the harshest features in any state tax code, and it rewards estates that plan to stay under the line, sometimes through charitable bequests that pull the taxable estate back below the cliff.

That charitable maneuver has a name in planning circles: the Santa Clause. A will can direct that any amount over the cliff threshold goes to charity, so the estate never tips over the edge and never loses the exclusion. It sacrifices the overage to a charity rather than handing a much larger amount to the state. For an estate sitting just above the cliff, giving away $200,000 to charity to avoid $600,000 of New York tax is simple math, and it keeps the money out of Albany while doing some good. It only works if the will is drafted for it ahead of time, which is one more reason the planning has to happen while the person is alive.

New York requires Form ET-706 within nine months of death, and the state wants a completed federal Form 706 attached even when no federal return is required. New York also adds back certain gifts made within three years of death, with exceptions, which can push an estate over the line that looked safe on paper. There is no New York City estate tax on top of the state tax, so a Manhattan resident faces the state rules, not a separate city layer. But residency matters: New York taxes the worldwide estate of a New York resident and the New York-situs real and tangible property of a nonresident. Snowbirds who think they changed domicile to Florida but kept a New York apartment and spend summers here can find their whole estate pulled into New York. Domicile fights with the state are document-heavy and expensive, and the estate is the one defending the position after the person who made the decisions is gone.

A common mistake is assuming portability saves you at the state level the way it does federally. New York does not allow portability of its exclusion. The unused exclusion of a first spouse does not carry over to the survivor for New York purposes, even if a federal DSUE election was made. That means New York planning often relies on credit-shelter or bypass trusts to capture both spouses’ exclusions, an older technique that portability made less necessary at the federal level but that still matters in New York. Couples who simplified their estate plan to rely on federal portability sometimes give up a New York exclusion they could have preserved, leaving roughly $7 million of state exclusion unused at the first death.

Other states run their own systems with their own thresholds. Connecticut, Massachusetts, Oregon, Washington, and several others impose estate taxes, and a few states impose inheritance taxes paid by the heirs rather than the estate. If you own property in more than one state, more than one state’s estate tax can reach it. The federal estate tax exemption 2025 is a national number, but the state rules are a patchwork, and the binding constraint for most high-net-worth families in the Northeast is the state, not the IRS. If your estate is anywhere near $7 million and you have New York ties, the cliff alone is reason enough to get a current valuation and sit down with a CPA. Our clients in New York deal with this every year, and the planning has to account for both layers at once, because solving for the federal tax while ignoring the state tax leaves the bigger bill unpaid.

If you have recently moved into or out of New York, document the move carefully while you can. Domicile turns on where you treat as your permanent home, and the state weighs factors like where you keep your most valuable possessions, where your family is, where you vote and register vehicles, and how many days you spend in New York. An estate cannot rebuild that record after the fact. Keeping a clear paper trail of a genuine change of domicile is the single most useful thing a part-year New Yorker can do to keep an entire estate from being pulled back under the federal estate tax exemption 2025 comparison and into New York’s far lower threshold.