A federal estate tax calculator determines whether a deceased person's estate owes federal estate tax and calculates the amount due. The federal estate tax applies to the transfer of property at death, with a unified credit that effectively exempts estates below a certain threshold from taxation. For 2024, the federal estate tax exemption is $13.61 million per individual ($27.22 million for married couples using portability), meaning estates valued below this amount owe zero federal estate tax. Estates exceeding the exemption are taxed at graduated rates reaching a top rate of 40% on the amount above the exemption. The federal estate tax has a long and politically contentious history in American tax policy. First enacted in 1916 to fund World War I, the estate tax has been modified dozens of times, with exemption levels ranging from $60,000 (1997) to the current $13.61 million (2024). The Tax Cuts and Jobs Act of 2017 roughly doubled the exemption from $5.49 million to $11.18 million (indexed for inflation), but this increase is scheduled to sunset after December 31, 2025. Unless Congress acts, the exemption will revert to approximately $7 million (adjusted for inflation) in 2026, which would bring an estimated 10 times more estates into the taxable range. The estate tax is distinct from the inheritance tax (which is imposed by certain states on the beneficiaries who receive assets) and the income tax (which generally does not apply to inherited assets due to the stepped-up basis rule). Under stepped-up basis, heirs receive inherited assets with a cost basis equal to the fair market value at the date of death, eliminating capital gains tax on appreciation during the decedent's lifetime. This provision is one of the most significant tax benefits in the Internal Revenue Code and is frequently debated in tax reform discussions. The federal estate tax affects a very small percentage of decedents. The Tax Policy Center estimates that approximately 4,100 estate tax returns were filed for 2023 decedents (out of approximately 2.8 million deaths), and only about 2,500 of those owed any tax. However, the estates that are subject to the tax tend to involve complex planning, significant wealth, and substantial professional fees for attorneys, accountants, and appraisers. Estate planning to minimize or eliminate the estate tax is a multi-billion dollar professional services industry.
Taxable Estate = Gross Estate - Deductions (debts, expenses, charitable, marital) Tentative Tax = Apply graduated rates to Taxable Estate Estate Tax Due = Tentative Tax - Unified Credit ($5,389,800 for 2024) - Other Credits Worked Example: Gross estate: $18,000,000 Minus funeral/admin expenses: -$150,000 Minus debts: -$200,000 Minus charitable bequests: -$500,000 Taxable estate: $17,150,000 Amount above exemption: $17,150,000 - $13,610,000 = $3,540,000 Estate tax (at 40% marginal rate): approximately $1,416,000 (Actual calculation uses graduated rate schedule from 18% to 40%)
- 1Calculate the gross estate, which includes the fair market value of everything the deceased person owned or had an interest in at the date of death. This encompasses real estate, bank accounts, investment accounts (stocks, bonds, mutual funds), retirement accounts (IRAs, 401(k)s), life insurance proceeds (if the deceased owned the policy or had incidents of ownership), business interests (closely held corporations, partnerships, LLCs), personal property (vehicles, jewelry, art, collectibles), and any assets transferred within three years of death that were subject to retained interests. Joint property is included based on the decedent's ownership percentage. The gross estate valuation date is generally the date of death, though the executor can elect an alternate valuation date (six months after death) if it would reduce the estate's value.
- 2Subtract allowable deductions to arrive at the taxable estate. The most significant deductions include: the marital deduction (unlimited for assets passing to a surviving spouse who is a U.S. citizen), the charitable deduction (unlimited for assets passing to qualified charitable organizations), funeral and burial expenses, estate administration expenses (executor fees, attorney fees, accounting fees, appraisal costs), debts owed by the decedent at death (mortgage, credit cards, loans), and state death taxes paid. The marital deduction is the most powerful estate planning tool because it allows unlimited transfers between spouses tax-free, effectively deferring estate tax until the surviving spouse's death.
- 3Apply the graduated estate tax rate schedule to the taxable estate. The federal estate tax uses a unified rate schedule that starts at 18% on the first $10,000 of taxable transfers and increases in brackets up to 40% on amounts exceeding $1,000,000. However, the unified credit ($5,389,800 for 2024, which shelters $13.61 million) effectively eliminates tax on estates below the exemption amount. The practical effect is that only the amount exceeding $13.61 million is taxed, and the effective rate on that excess approaches 40% for large estates. The same rate schedule applies to both estate and gift taxes under the unified transfer tax system.
- 4Apply available credits to reduce the tentative tax. The unified credit ($5,389,800 for 2024) is the primary credit and effectively exempts the first $13.61 million from tax. Additional credits include: the credit for state death taxes (limited to the amount of state estate taxes actually paid), the credit for tax on prior transfers (for assets taxed in a previous estate within the past 10 years), the credit for foreign death taxes (for assets situated in foreign countries that were taxed by the foreign jurisdiction), and the credit for gift taxes paid on pre-1977 gifts. The deceased spousal unused exclusion (DSUE or portability) allows a surviving spouse to use the deceased spouse's unused exemption amount, potentially doubling the available exemption to $27.22 million.
- 5File Form 706 (United States Estate and Generation-Skipping Transfer Tax Return) with the IRS. Form 706 is due nine months after the date of death, with an automatic six-month extension available by filing Form 4768. The return must be filed if the gross estate plus adjusted taxable gifts exceeds the filing threshold ($13.61 million for 2024 decedents). Even estates below the threshold may need to file to elect portability of the DSUE amount to the surviving spouse. Form 706 requires detailed schedules listing all assets (Schedules A through I), deductions (Schedules J through O), and tax computation. The return must include appraisals for real estate, closely held business interests, and significant personal property.
- 6Pay the estate tax due, which is generally due at the same time as the return (nine months after death, or fifteen months with extension). The executor is personally liable for the estate tax if assets are distributed before the tax is paid. Several payment options exist for estates with liquidity challenges: installment payments under IRC Section 6166 (for estates where a closely held business constitutes more than 35% of the adjusted gross estate, allowing tax to be paid over up to 14 years with favorable interest rates), loans secured by estate assets, or selling estate assets to generate cash. The IRS can also accept bonds or other security in lieu of immediate payment.
- 7Consider the generation-skipping transfer (GST) tax, which is an additional tax on transfers to beneficiaries who are two or more generations below the transferor (typically grandchildren). The GST tax has its own exemption ($13.61 million for 2024, same as the estate tax exemption) and is imposed at a flat rate of 40% on transfers exceeding the exemption. The GST tax was designed to prevent wealthy families from avoiding estate tax at each generation by skipping directly to grandchildren or later generations. The GST exemption can be allocated to trusts that benefit multiple generations, such as dynasty trusts.
A single decedent with an $8.5 million gross estate and $350,000 in deductions has a taxable estate of $8,150,000. Since this is below the $13.61 million exemption, no federal estate tax is owed. However, the executor may still want to file Form 706 if the decedent was married and predeceased a surviving spouse, to preserve the unused exemption ($5.46 million) for portability.
A decedent with a $25 million gross estate leaves $10 million to the surviving spouse (marital deduction) and $500,000 in other deductions. Taxable estate: $14,500,000. Amount above exemption: $14,500,000 - $13,610,000 = $890,000. Tax at 40% marginal rate: approximately $356,000 (plus graduated rates on lower brackets). The surviving spouse receives the assets tax-free but will include them in their own estate at death.
A $50 million estate with $15 million to charity, $12 million to spouse, and $1 million in expenses. Taxable estate: $22,000,000. Amount above exemption: $8,390,000. Tax at 40%: approximately $3,356,000. Without the charitable deduction, the tax would be approximately $9,356,000. Strategic charitable giving through a charitable remainder trust or foundation reduced the tax by $6 million while supporting philanthropic goals.
The first spouse dies with a $5 million estate, all passing to the surviving spouse (zero tax via marital deduction). The executor files Form 706 to port the unused exemption of $8.61 million ($13.61M - $5M used). When the surviving spouse dies with $20 million, their total available exemption is $13.61M + $8.61M = $22.22M. Only $20M - deductions needs to be sheltered, well within the combined exemption. Without portability, the surviving spouse would owe tax on approximately $6.39 million.
Estate planning attorneys use federal estate tax projections as the foundation for comprehensive estate plans. For ultra-high-net-worth clients, minimizing estate tax exposure involves sophisticated strategies including irrevocable life insurance trusts (ILITs), grantor retained annuity trusts (GRATs), qualified personal residence trusts (QPRTs), charitable lead trusts (CLTs), charitable remainder trusts (CRTs), family limited partnerships (FLPs), and intentionally defective grantor trusts (IDGTs). Each strategy has specific requirements, risks, and benefits that must be modeled against the client's asset profile and family circumstances.
The IRS Estate and Gift Tax division audits approximately 10-15% of filed Form 706 returns, one of the highest audit rates of any return type. The high audit rate reflects the large dollar amounts at stake and the complexity of valuations involved. Common audit targets include valuation discounts on closely held business interests, the classification of assets as separate versus community property, the timing of transfers near death, and the deductibility of claimed expenses. Estate tax litigation in the U.S. Tax Court generates significant case law on valuation methodology and planning techniques.
Financial advisors use estate tax calculations to guide clients on asset allocation, beneficiary designations, and lifetime gifting strategies. The annual gift tax exclusion ($18,000 per recipient for 2024) allows systematic wealth transfer without using any of the lifetime exemption. For clients with estates near the exemption threshold, strategic gifting of appreciating assets to irrevocable trusts can remove future growth from the taxable estate. Life insurance owned by an ILIT provides estate tax-free liquidity to pay estate taxes on illiquid assets like real estate or business interests.
Congressional tax policy committees use estate tax revenue data and distributional analysis to evaluate reform proposals. The federal estate tax generates approximately $20-30 billion per year in revenue, a relatively small portion of total federal revenue but a politically significant tax. Reform proposals range from full repeal (supported by those who view the tax as a burden on family businesses and farms) to lower exemptions and higher rates (supported by those who view the tax as essential for preventing dynastic wealth concentration). The scheduled 2026 sunset of the higher exemption ensures continued legislative attention to this area.
Community property states (Arizona, California, Idaho, Louisiana, Nevada, New
Community property states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin) provide a unique estate tax benefit: both halves of community property receive a stepped-up basis at the first spouse's death, not just the decedent's half. In common law states, only the decedent's share of jointly held property receives the step-up. This distinction can save surviving spouses in community property states hundreds of thousands of dollars in capital gains taxes on appreciated assets. Some common law state residents establish community property trusts in states that allow them (such as Alaska and Tennessee) specifically to obtain this double step-up benefit.
Closely held business interests present special valuation and liquidity challenges for estate tax purposes.
IRC Section 6166 allows estates where a closely held business constitutes more than 35% of the adjusted gross estate to defer estate tax payments over up to 14 years (four years of interest-only payments followed by 10 years of principal and interest). The interest rate on the deferred tax attributable to the first $1,860,000 (2024) of taxable value is only 2%. Special use valuation under IRC Section 2032A allows qualifying farm and business real property to be valued at its current use (rather than highest and best use), potentially reducing the taxable estate by up to $1,390,000 (2024).
Non-citizen surviving spouses do not qualify for the unlimited marital deduction.
Instead, assets passing to a non-citizen spouse can qualify for estate tax deferral only if transferred to a qualified domestic trust (QDOT). The QDOT must have at least one U.S. trustee, and estate tax is imposed when principal is distributed to the surviving spouse or at the surviving spouse's death. The annual gift tax exclusion for gifts to a non-citizen spouse is $185,000 (2024), significantly higher than the standard $18,000 exclusion.
| Taxable Amount Over | But Not Over | Tax Rate | Cumulative Tax |
|---|---|---|---|
| $0 | $10,000 | 18% | $1,800 |
| $10,000 | $20,000 | 20% | $3,800 |
| $20,000 | $40,000 | 22% | $8,200 |
| $40,000 | $60,000 | 24% | $13,000 |
| $60,000 | $80,000 | 26% | $18,200 |
| $80,000 | $100,000 | 28% | $23,800 |
| $100,000 | $150,000 | 30% | $38,800 |
| $150,000 | $250,000 | 32% | $70,800 |
| $250,000 | $500,000 | 34% | $155,800 |
| $500,000 | $750,000 | 37% | $248,300 |
| $750,000 | $1,000,000 | 39% | $345,800 |
| $1,000,000 | And up | 40% | Varies |
What is the federal estate tax exemption for 2024?
The federal estate tax exemption for 2024 is $13.61 million per individual. Married couples can effectively double this to $27.22 million through portability of the deceased spousal unused exclusion (DSUE). Estates below the exemption owe zero federal estate tax. The exemption is indexed for inflation and increases annually.
What happens to the estate tax exemption in 2026?
The Tax Cuts and Jobs Act of 2017 doubled the estate tax exemption, but this increase is scheduled to sunset after December 31, 2025. Unless Congress extends the provision, the exemption will revert to approximately $7 million (adjusted for inflation) in 2026. This would bring an estimated 10 times more estates into the taxable range. Estate planners are advising clients to use their exemption before the sunset through lifetime gifts to irrevocable trusts.
Do I have to pay estate tax on life insurance proceeds?
Life insurance proceeds are included in the gross estate if the deceased owned the policy or had incidents of ownership (the right to change beneficiaries, borrow against the policy, or cancel it). To exclude life insurance from the estate, the policy must be owned by an irrevocable life insurance trust (ILIT) or another person, and the transfer must occur more than three years before death. Properly structured ILITs are one of the most common estate planning tools for providing estate tax-free liquidity.
What is the stepped-up basis rule?
Under IRC Section 1014, inherited assets receive a cost basis equal to the fair market value at the date of death (or the alternate valuation date). This means all capital gains that accrued during the decedent's lifetime are permanently eliminated for income tax purposes. For example, stock purchased for $100,000 that is worth $1,000,000 at death receives a stepped-up basis of $1,000,000; the heir can sell it immediately with zero capital gains tax. This provision is one of the most significant tax benefits in the Code.
Is there a difference between estate tax and inheritance tax?
Yes. The federal estate tax is imposed on the estate itself (the total value of the deceased person's assets) and is paid by the estate before distribution. State inheritance taxes, by contrast, are imposed on the individual beneficiaries who receive assets, with rates depending on the beneficiary's relationship to the deceased. Six states levy inheritance taxes. Maryland is the only state that imposes both an estate tax and an inheritance tax.
Can I give away my assets before death to avoid estate tax?
Lifetime gifts can reduce the taxable estate, but the federal gift tax and estate tax are unified. Gifts exceeding the annual exclusion ($18,000 per recipient for 2024) count against the lifetime exemption ($13.61 million). However, strategic gifting of appreciating assets removes future growth from the estate. Gifts to irrevocable trusts, charitable organizations, and 529 plans (up to five years of annual exclusions at once) are common tax-reduction strategies. Gifts within three years of death of life insurance policies are pulled back into the estate.
Pro Tip
Even if your estate is well below the current $13.61 million exemption, the scheduled sunset in 2026 could bring the exemption down to approximately $7 million. If your estate is between $7 million and $13.61 million, consider making lifetime gifts to irrevocable trusts before the end of 2025 to lock in the higher exemption. The IRS has issued final regulations confirming that gifts made under the higher exemption will not be clawed back if the exemption decreases. Consult an estate planning attorney to evaluate whether accelerated gifting makes sense for your situation.
Did you know?
Despite being called the death tax by its opponents, the federal estate tax has been in continuous existence since 1916 (with a brief repeal in 2010 under the Economic Growth and Tax Relief Reconciliation Act of 2001). During that one-year repeal in 2010, notable billionaires who passed away -- including George Steinbrenner (owner of the New York Yankees) and Dan Duncan (Houston energy billionaire) -- had their estates pass completely free of federal estate tax, saving their heirs billions of dollars. Congress retroactively reinstated the tax for 2010 but gave executors the option of applying either the 2010 rules (no estate tax but no stepped-up basis) or the 2011 rules (estate tax with stepped-up basis).