Key Takeaways

  • The 2024 federal estate tax exemption is $13.61 million per person ($27.22 million for married couples using portability)
  • Estate tax rates are progressive, ranging from 18% to 40%, with the maximum rate applying to taxable amounts over $1 million
  • Form 706 is due 9 months after the date of death, with a 6-month extension available by filing Form 4768
  • The marital deduction allows unlimited tax-free transfers to a surviving U.S. citizen spouse
  • Inherited assets receive a stepped-up basis to fair market value at death, eliminating capital gains on appreciation during the decedent's lifetime
Last updated: January 2026

Estate Tax (Form 706)

The federal estate tax is a tax on the transfer of property at death. Unlike income tax, which taxes earnings, the estate tax applies to the value of assets a decedent leaves behind. For the 2024 tax year (tested on the May 2025 - February 2026 EA exam), the estate tax exemption is $13.61 million per person.

Understanding the Estate Tax

The estate tax and gift tax work together as a unified transfer tax system. This means lifetime gifts and transfers at death share the same exemption amount. Any exemption used for lifetime gifts reduces the amount available at death.

Key 2024 Figures

Item2024 Amount
Estate Tax Exemption$13,610,000 per person
Married Couple (with portability)$27,220,000 combined
Annual Gift Tax Exclusion$18,000 per recipient
Maximum Estate Tax Rate40%
Applicable Credit Amount$5,389,800

Who Must File Form 706?

Form 706, United States Estate (and Generation-Skipping Transfer) Tax Return, must be filed for estates of decedents who were U.S. citizens or residents where the gross estate plus adjusted taxable gifts exceeds the filing threshold of $13,610,000 for 2024.

Important Exception: Even if the estate is below the threshold, Form 706 must be filed to elect portability of the deceased spousal unused exclusion (DSUE) amount.

Filing Deadline

  • Due Date: 9 months after the date of death
  • Extension: 6-month automatic extension available by filing Form 4768
  • Late Filing Penalty: Failure to file may result in penalties of 5% per month (up to 25%)

Components of the Gross Estate

The gross estate includes all property owned or controlled by the decedent at death, valued at fair market value on the date of death (or alternate valuation date).

What's Included in the Gross Estate

CategoryExamples
Real PropertyPrimary residence, vacation homes, rental properties, land
Personal PropertyVehicles, jewelry, art, furniture, collectibles
Financial AssetsBank accounts, stocks, bonds, mutual funds
Retirement AccountsIRAs, 401(k)s, pensions, annuities
Life InsuranceProceeds from policies owned by decedent or where decedent had incidents of ownership
Business InterestsSole proprietorships, partnership interests, closely-held stock
Jointly Held PropertyFull value if decedent provided consideration; 50% for spouses
Revocable TrustsProperty in trusts the decedent could revoke or control
Powers of AppointmentProperty over which decedent held general power of appointment

Life Insurance Special Rules

Life insurance proceeds are included in the gross estate if:

  1. The decedent owned the policy (held incidents of ownership), OR
  2. The proceeds are payable to the decedent's estate

EA Exam Tip: If the decedent transferred a life insurance policy within 3 years of death, the proceeds are still included in the gross estate under the 3-year rule.


Deductions from the Gross Estate

Several deductions reduce the gross estate to arrive at the taxable estate:

Major Deductions

DeductionDescription
Marital DeductionUnlimited deduction for property passing to surviving U.S. citizen spouse
Charitable DeductionUnlimited deduction for bequests to qualified charities
Debts and ClaimsDecedent's outstanding debts, mortgages, and valid claims
Funeral ExpensesReasonable funeral and burial costs
Administrative ExpensesExecutor fees, attorney fees, probate costs
State Death TaxesDeduction for state estate or inheritance taxes paid

Marital Deduction Requirements

The unlimited marital deduction requires:

  • Property passes to surviving spouse
  • Surviving spouse is a U.S. citizen (special rules apply for non-citizen spouses using QDOT)
  • Property passes in qualifying form (outright or qualifying trust)

Estate Tax Rate Table (2024)

The federal estate tax uses a progressive rate structure. Tax is calculated on the taxable estate amount:

Taxable AmountTax RateTax Calculation
$0 - $10,00018%18% of amount
$10,001 - $20,00020%$1,800 + 20% of excess over $10,000
$20,001 - $40,00022%$3,800 + 22% of excess over $20,000
$40,001 - $60,00024%$8,200 + 24% of excess over $40,000
$60,001 - $80,00026%$13,000 + 26% of excess over $60,000
$80,001 - $100,00028%$18,200 + 28% of excess over $80,000
$100,001 - $150,00030%$23,800 + 30% of excess over $100,000
$150,001 - $250,00032%$38,800 + 32% of excess over $150,000
$250,001 - $500,00034%$70,800 + 34% of excess over $250,000
$500,001 - $750,00037%$155,800 + 37% of excess over $500,000
$750,001 - $1,000,00039%$248,300 + 39% of excess over $750,000
Over $1,000,00040%$345,800 + 40% of excess over $1,000,000

Note: The applicable credit of $5,389,800 effectively exempts the first $13.61 million from tax.


Portability: Deceased Spousal Unused Exclusion (DSUE)

Portability allows a surviving spouse to use the deceased spouse's unused exemption amount, effectively doubling the exemption for married couples.

How Portability Works

  1. First spouse dies with $5 million taxable estate
  2. Uses $5 million of $13.61 million exemption
  3. DSUE Amount: $8.61 million unused
  4. Surviving spouse can add $8.61 million to their own exemption
  5. Surviving spouse's total exemption: $13.61M + $8.61M = $22.22 million

Electing Portability

  • Must file Form 706 even if no tax is due
  • Must file within the filing deadline (including extensions)
  • Portability election is irrevocable once made
  • Only the last deceased spouse's DSUE is available

EA Exam Tip: Portability is a critical planning tool. Always consider filing Form 706 to preserve the DSUE, even for smaller estates.


Step-Up in Basis vs. Carryover Basis

One of the most significant tax benefits of inherited property is the stepped-up basis:

Comparison

Transfer TypeBasis RuleTax Benefit
InheritanceStepped-up to FMV at deathCapital gains during decedent's life eliminated
GiftCarryover (donor's) basisDonor's capital gains transferred to recipient

Step-Up Basis Example

  • Decedent purchased stock for $10,000
  • Stock worth $100,000 at death
  • Heir's basis: $100,000 (stepped-up)
  • If heir sells immediately: $0 capital gain

Why This Matters

The step-up in basis eliminates income tax on appreciation that occurred during the decedent's lifetime. This makes holding appreciated assets until death advantageous compared to gifting them during life.


TCJA Sunset: What's Coming in 2026

The Tax Cuts and Jobs Act (TCJA) of 2017 doubled the estate tax exemption. However, this provision is scheduled to sunset after December 31, 2025.

Expected Changes

Item2024 (Current)2026 (Projected)
Estate Tax Exemption$13.61 million~$7 million (adjusted for inflation)
Married Couple$27.22 million~$14 million

EA Exam Note: While the EA exam tests 2024 tax law, understanding upcoming changes demonstrates comprehensive knowledge of the transfer tax system.


EA Exam Tips

  1. Memorize the 2024 exemption: $13.61 million per person, $27.22 million for married couples
  2. Know what's included: Life insurance owned by decedent is in the gross estate
  3. Understand deductions: Marital and charitable deductions are unlimited
  4. Filing deadline: 9 months after death, 6-month extension available
  5. Portability requires filing: Must file Form 706 to elect DSUE, even for small estates
  6. Step-up vs. carryover: Inherited property gets stepped-up basis; gifted property carries over donor's basis
  7. Rate structure: 40% maximum rate applies to taxable amounts over $1 million
Test Your Knowledge

For 2024, what is the federal estate tax exemption amount per individual?

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Test Your Knowledge

A decedent owned a $500,000 life insurance policy payable to their adult child. The decedent died in 2024. Which statement is correct regarding the estate tax treatment?

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B
C
D
Test Your Knowledge

A decedent purchased stock for $50,000 that was worth $200,000 at death. The heir sells the stock for $210,000 shortly after inheriting it. What is the heir's capital gain?

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B
C
D