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Estate and Inheritance Tax: Complete Guide to What Heirs Actually Pay 2024-2025

Death and taxes. Heirs often assume they'll face crippling taxes when inheriting, but federal law treats inherited assets with unusual generosity: a "step-up in basis" that forgives years of unrealized gains. This rule is one of the largest tax breaks in the entire tax code, benefiting millions of Americans while taxing very few estates federally. However, state-level inheritance taxes and the nuances of basis step-up can create surprising tax bills if assets are mishandled. This guide demystifies what actually happens to taxes when you inherit, what "step-up in basis" means, and how to plan to minimize taxes on inherited wealth.

Quick definition: Estate tax is a federal tax on the total assets of a deceased person; it applies only to estates exceeding $13.61 million (2024), exempting 99.9% of Americans. Inheritance tax is paid by heirs and exists in only six states. Step-up in basis is a rule allowing heirs to inherit appreciated assets at their date-of-death value, erasing capital gains taxes on appreciation during the deceased's lifetime.

Key Takeaways​

  • Federal estate tax applies only to estates exceeding $13.61 million (2024); most people never pay it
  • Step-up in basis erases capital gains taxes on inherited assets, often worth hundreds of thousands of dollars
  • State inheritance taxes exist in only 6 states (Iowa, Kentucky, Maryland, Nebraska, New Jersey, Pennsylvania) and apply to heirs' received amounts
  • State estate taxes are separate and apply in 17 states (distinct from federal estate tax); thresholds are much lower ($1–$7 million)
  • Inherited IRAs have different rules under SECURE 2.0; non-spouse beneficiaries must deplete them within 10 years
  • Trusts, gifting strategies, and life insurance can minimize estate tax for high-net-worth individuals
  • The step-up is set to expire at the end of 2025 (reverting to carryover basis under current law); this may dramatically change inheritance tax planning

Federal Estate Tax: The Basics​

The federal estate tax is a tax on your estate (all assets) when you die.

Who pays federal estate tax (2024)​

  • Threshold: $13.61 million (married couple: $27.22 million with portability)
  • Tax rate: 40% on amount exceeding threshold
  • Frequency: Roughly 3,500 estates nationwide (0.1% of deaths) owe estate tax

A person dying in 2024 with an $13.61 million estate owes $0 federal estate tax. A person with $20 million owes 40% on the excess: ($20M − $13.61M) × 40% = $2.556 million.

Historical context​

The estate tax threshold was $1.2 million before 2001, rose to $5 million in 2009, and jumped to $13.61 million in 2024 due to the Tax Cuts and Jobs Act (TCJA) of 2017. However, TCJA provisions sunset at the end of 2025, reverting the threshold to $7 million (adjusted for inflation, likely ~$7.5 million in 2026).

This creates a "cliff": heirs of ultra-high-net-worth individuals should consider strategic gifting or trusts before 2026 to lock in the higher exemption.

Who needs to file an estate tax return (Form 706)​

Even if the estate doesn't owe tax, executors of estates exceeding the threshold must file Form 706 (Estate Tax Return) to document the exemption (to avoid future IRS scrutiny). Filing costs thousands but is mandatory for large estates.

State Estate and Inheritance Taxes​

Unlike federal estate tax (rare), state-level taxes are more common and affect more people.

State estate taxes (17 states)​

State estate taxes apply to the estate itself, similar to federal tax but with lower thresholds.

States with state estate tax (2024):

  • Delaware, Hawaii, Illinois, Iowa, Kentucky, Maine, Maryland, Massachusetts, Minnesota, Missouri, Nebraska, New York, Oregon, Rhode Island, Tennessee, Vermont, Washington

Thresholds (examples):

  • Massachusetts: $1 million (lowest threshold)
  • New York: $6.94 million
  • California, Texas, Florida: No state estate tax (attractive for retirees)

A New Yorker with a $10 million estate owes:

  • Federal estate tax: 0 (under $13.61M threshold)
  • New York state estate tax: 40% × ($10M − $6.94M) = $1.224 million

This is significant. High-net-worth individuals in high-threshold states often relocate to no-tax states (Florida, Texas) before death to avoid state estate tax.

State inheritance taxes (6 states)​

Inheritance tax is paid by the heir (not the estate) and applies to amounts received.

States with inheritance tax:

  • Iowa, Kentucky, Maryland, Nebraska, New Jersey, Pennsylvania

Rates and exemptions vary:

New Jersey example:

  • Surviving spouse: 0% (exempt)
  • Children: 0–16% (exempt if total inherited value is low; taxed at rates up to 16% for larger inheritances)
  • Other heirs: 11–18%

A New Jersey resident inheriting $100,000 from a non-spouse parent pays 0% if the inheritance is below the threshold (~$25,000), but faces 13–16% tax on amounts above. This can be $10,000–$16,000 in taxes on a $100,000 inheritance.

Families in inheritance-tax states often strategically inherit in low-value batches or use trusts to minimize the impact.

Step-Up in Basis: The Biggest Tax Break in America​

Step-up in basis is perhaps the single largest tax break in the entire US tax code. It allows heirs to inherit appreciated assets at their date-of-death value, not the deceased's original cost basis.

How it works​

When you buy a stock for $10 and it's worth $100 when you die, normally the $90 gain would be taxable. But under step-up rules, your heir inherits the stock with a "stepped up" basis of $100 (date-of-death value). If they immediately sell for $100, they owe $0 in capital gains tax.

Real example: Apple stock inheritance​

Scenario 1: Gift during lifetime

Sarah gifts her mother Apple stock purchased in 1990 for $5,000 (now worth $250,000) in 2024.

  • Sarah's mother inherits the stock with carryover basis of $5,000
  • If she sells for $250,000, her taxable gain is $245,000
  • Capital gains tax (20% long-term rate): $49,000
  • She nets $201,000

Scenario 2: Inheritance after death

Sarah's mother holds the Apple stock until she dies in 2024, when it's worth $250,000.

  • Heirs inherit with stepped-up basis of $250,000 (date-of-death value)
  • If they sell immediately for $250,000, taxable gain is $0
  • They net $250,000

Difference: By waiting until death, Sarah's mother's heirs save $49,000 in capital gains taxes. The step-up is worth $49,000 purely because the asset was inherited rather than gifted.

The math on stepped-up basis​

For high-net-worth people, the step-up is enormous.

Warren Buffett analogy:

Suppose Warren Buffett dies with Berkshire Hathaway stock worth $80 billion, purchased for $5 billion decades ago.

  • Without step-up: $75 billion unrealized gain, potentially $15 billion in capital gains tax (20% rate)
  • With step-up: Heirs inherit at $80 billion basis, pay $0 in capital gains tax
  • Step-up saves: $15 billion

This is why step-up is politically controversial. Critics argue it's a tax loophole for the ultra-wealthy; defenders argue it's necessary to avoid forcing heirs to sell assets to pay taxes.

When step-up applies​

  • Individual assets: Stocks, bonds, real estate, art, collectibles—all receive stepped-up basis
  • Retirement accounts: IRAs and 401ks do NOT receive stepped-up basis; heirs inherit at cost basis and owe income tax on distributions (RMDs)
  • Inherited real estate: Receives stepped-up basis, so if a home appreciated $200,000, the heir can immediately sell for stepped-up value with no capital gains tax

When step-up does NOT apply​

  • Community property (nine states): California, Texas, and others treat community property differently; both spouses' interests receive step-up
  • Qualified Domestic Trust (QDOT): Surviving spouses in certain trusts get step-up benefits
  • Foreign persons: Non-citizen spouses don't receive step-up on non-US property

Step-Up in Basis Set to Expire (2026)​

Critical change: The Tax Cuts and Jobs Act (2017) temporarily doubled the estate tax exemption to $13.61 million (2024). This temporary provision expires December 31, 2025, reverting to roughly $7 million (adjusted for inflation).

Additionally, under the expired-law scenario, step-up in basis for non-spouse heirs would be limited or eliminated, reverting to "carryover basis" (heirs inherit at the deceased's cost basis, not date-of-death value).

If carryover basis becomes law:

  • Heirs inherit appreciated assets at the deceased's cost basis
  • When they sell, they owe capital gains tax on the entire appreciation
  • Exception: First $1 million of appreciated assets per person receives step-up (not enough to matter for most high-net-worth estates)

This would increase the tax cost of inheritance substantially for anyone with appreciated assets.

Planning implication: High-net-worth individuals should consider strategic gifting or basis step-up planning before 2026 to lock in the current rules.

Real-World Examples​

Example 1: Modest inheritance with step-up

Marcus inherits his parents' home, worth $400,000. They bought it in 1985 for $80,000.

Without step-up (hypothetical):

  • Cost basis: $80,000
  • Stepped-up basis: $400,000 (date-of-death value)
  • If Marcus immediately sells for $400,000:
    • With step-up: Taxable gain = $0, taxes = $0
    • Without step-up: Taxable gain = $320,000, taxes ~$64,000 (at 20% long-term rate)

Marcus saves $64,000 purely due to step-up.

He can immediately sell and pocket the full $400,000, or keep the home for personal use. Either way, no capital gains tax.

Example 2: Inheritance with state estate tax

Gloria inherits $8 million from her father, who died in Massachusetts (state estate tax threshold $1 million).

  • Federal estate tax: $0 (under $13.61 million)
  • Massachusetts estate tax: 16% × ($8M − $1M) = $1.12 million (rough estimate; rate is progressive)
  • Inheritance tax: 0 (Massachusetts has no inheritance tax, only estate tax)
  • Total tax on $8M estate: $1.12 million (estate pays before distribution to heirs)

If Gloria's father had lived in Florida (no state estate tax):

  • Federal estate tax: $0
  • State tax: $0
  • Total tax: $0

The $1.12 million difference is purely location-based. This incentivizes relocation before death for ultra-high-net-worth individuals.

Example 3: IRA inheritance (no step-up)

Michael inherits a $500,000 Traditional IRA from his mother (she was 75, had taken RMDs).

  • IRA basis: $0 (all contributions were deductible; all growth was tax-deferred)
  • Stepped-up basis: Does NOT apply to IRAs
  • Michael must take RMDs under SECURE 2.0 rules (10-year depletion)
  • He'll owe income tax on every distribution (roughly 24% federal + state, so ~$360,000 in taxes on $500,000 inherited)

Compare this to if Michael inherited $500,000 in taxable brokerage stock (which receives step-up): He'd owe $0 capital gains tax.

Key difference: Taxable accounts receive step-up; retirement accounts don't. This is why heirs should prioritize withdrawing retirement accounts and gifting taxable assets to beneficiaries.

Example 4: Inheritance tax impact in New Jersey

Paula's mother dies and leaves Paula $200,000 (Paula is an adult child).

Paula lives in New Jersey (has inheritance tax):

  • Inheritance tax threshold for children: ~$25,000 (roughly; varies by year)
  • Taxable amount: $200,000 − $25,000 = $175,000
  • Tax rate: 13% (for non-spouse children)
  • Inheritance tax owed: ~$22,750

Paula nets: $200,000 − $22,750 = $177,250 (instead of $200,000).

If Paula's mother had left her $200,000 in appreciated stock:

  • The stock receives step-up basis, so no capital gains tax
  • But Paula still owes inheritance tax on the $200,000 value
  • Total tax: ~$22,750 (same)

Inheritance tax applies to value received, not capital gains.

Common Mistakes​

Mistake 1: Gifting appreciated assets instead of waiting for step-up

A parent with appreciated stock assumes gifting it to a child to reduce their estate is smart tax planning. It's not. The child inherits the cost basis and must pay capital gains tax on the appreciation. Waiting for the parent to die lets the child inherit with stepped-up basis, paying no capital gains tax.

Fix: For appreciated assets, wait until death (unless other goals necessitate gifting). For cash or low-basis assets, gift to reduce estate.

Mistake 2: Not understanding that IRAs don't get stepped-up basis

Heirs inherit a Traditional IRA assuming it's tax-free (because step-up). It's not. IRAs are tax-deferred vehicles; they come with built-in taxes. Heirs owe income tax on distributions.

Fix: Prioritize in-life withdrawal of IRAs (Roth conversion, or just take withdrawals) to pay taxes at your rate, not your heir's. Leave appreciated taxable assets in your estate for step-up.

Mistake 3: Not planning for state estate or inheritance tax

A family with $10 million in assets doesn't plan for state estate tax, only federal. They move to New York and die; the $10M estate triggers NY state estate tax on $3M+, an unplanned $1.2M+ bill.

Fix: High-net-worth individuals should map state tax consequences and consider relocation if state tax is substantial.

Mistake 4: Overestimating the estate tax hit

Many middle-income families worry about "death taxes," believing heirs will pay 40% on everything. Federal estate tax doesn't apply to estates under $13.61M (99.9% of people). Only ultra-wealthy are affected.

Fix: If your net worth is under $13.61M (including home, investments, life insurance), you don't need federal estate planning for tax reasons.

Mistake 5: Not titling property correctly

A family home titled in one spouse's name alone. When they die, it transfers to the other spouse (good), but doesn't trigger basis step-up immediately. If later sold, the step-up date is the first spouse's death, not the second. This matters for timing.

Fix: Use portability (allow the surviving spouse to claim the decedent's unused exemption) and proper titling to maximize step-up benefits.

FAQ​

Q: If I inherit my parent's house, do I owe capital gains tax when I sell?

A: If you inherited after January 1, 2024, the house received a stepped-up basis to its date-of-death value. If you sell immediately for that value, you owe $0 capital gains tax. If you hold it and sell for more, you owe tax on the gain after the step-up date only.

Q: Can I reduce my estate to avoid estate tax by giving money away?

A: Yes, gifting is a primary strategy. You can gift $18,000 per person per year (2024) without using your lifetime exemption. Over many years, this reduces your taxable estate. For larger gifts, you can use your $13.61M lifetime exemption. Consult an estate attorney.

Q: My mother is very ill and has appreciated assets. Should I encourage her to sell them to lock in step-up, or keep them for step-up?

A: Keep them. If your mother sells while alive, she pays capital gains tax at her rate. If she dies holding them, her heirs get step-up and pay $0 capital gains tax. Waiting is better (unless she needs the cash).

Q: What's the difference between a revocable and irrevocable trust?

A: Revocable trusts avoid probate and allow the person to control their assets, but don't reduce the taxable estate for estate tax purposes. Irrevocable trusts (like an Irrevocable Life Insurance Trust, ILIT) can remove assets from the taxable estate, reducing estate tax exposure. The tradeoff: loss of control and access to assets.

Q: If my spouse inherits everything, do we owe estate tax?

A: No. The unlimited marital deduction allows spouses to transfer unlimited amounts tax-free. However, when the surviving spouse dies, their larger estate is taxable. Planning should account for both deaths.

Q: Do I owe taxes on inherited retirement accounts?

A: Yes, on distributions. Traditional IRAs and 401ks come with built-in income tax liability. You inherit the balance, but withdrawals are taxable at your tax rate. Under SECURE 2.0, non-spouse beneficiaries must deplete IRAs within 10 years. A $500,000 inherited Traditional IRA might generate $100,000 in taxes for your heirs.

Q: Is life insurance part of my taxable estate?

A: Yes, unless it's owned by an irrevocable trust (ILIT). Life insurance proceeds are included in the taxable estate, potentially pushing you over the threshold. Using an ILIT to own the policy removes it from your estate.

Q: What if I die before the end of 2025 and step-up is still the law?

A: Step-up applies. If you die in 2024 or 2025, heirs inherit with stepped-up basis. If you die in 2026+ (under carryover basis rules), step-up is limited, and heirs inherit at your cost basis (with $1M exception per person).

Summary​

Federal estate tax applies only to estates exceeding $13.61 million (2024), affecting roughly 0.1% of people. However, seventeen states impose state estate taxes with much lower thresholds, and six states impose inheritance taxes on heirs. Step-up in basis is a major tax benefit allowing heirs to inherit appreciated assets at date-of-death value, erasing capital gains taxes. This is worth hundreds of thousands or even millions of dollars for high-net-worth individuals but does not apply to retirement accounts (which heirs must distribute and pay income tax on). The estate and inheritance tax landscape is set to change in 2026 when TCJA provisions expire, reverting the federal threshold to ~$7 million and potentially eliminating step-up in basis (reverting to carryover basis). Ultra-high-net-worth families should do strategic gifting or trust planning before 2026. Proper estate planning—including wills, trusts, life insurance, and gifting strategies—can minimize or eliminate estate taxes for most families.

Disclaimer: This article is general education only and should not be construed as legal, tax, or estate planning advice. Estate and inheritance tax law is complex, involves state-specific rules, trust structures, and planning strategies specific to your financial situation and family goals. The 2026 sunset of TCJA provisions creates time-sensitive planning considerations. Consult a qualified estate attorney, tax professional, or CPA before making any decisions about gifting, trusts, life insurance, or estate structuring.

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