Estate Tax Calculator - Federal Exemption & Liability

An estate tax calculator determines your estimated federal estate tax liability and net inheritance passed to heirs based on statutory IRS exemption thresholds. By accounting for gross estate value, marital status portability, liabilities, administrative costs, spousal bequests, and charitable donations, an estate tax calculator clarifies whether your wealth exceeds the lifetime basic exclusion amount. This tool models 2025 and 2026 federal thresholds to support comprehensive estate planning.

• • High-net-worth estate planning: Evaluate federal tax exposure on combined real estate holdings, investment portfolios, business shares, and retirement accounts.
• • Marital portability optimization: Model how electing DSUE portability doubles the family estate tax exemption up to $27,220,000 in 2025.
• • Charitable gift and trust modeling: Calculate how allocating testamentary bequests to 501(c)(3) charities reduces taxable estate excess.
• • Life insurance and trust structuring: Determine how much liquidity an Irrevocable Life Insurance Trust (ILIT) must provide to cover estate taxes without forced asset sales.

The federal estate tax is an excise transfer tax levied on property transferred at death. Unlike state inheritance taxes, the federal estate tax is paid directly out of the decedent's estate before distributions occur.

Under current federal law, only estates exceeding the statutory exemption threshold owe tax, where the 40% top marginal rate applies to excess amounts.

For couples evaluating how legal marriage impacts income tax brackets and joint standard deductions alongside estate exemptions, explore our Marriage Tax Calculator.

Federal estate tax calculations determine net taxable value by subtracting all statutory deductions from the gross estate, then applying the 40% tax rate to any excess above the applicable exclusion.

• Gross Estate: Total fair market value of all assets, real property, cash, securities, and life insurance proceeds owned at death ($).
• Statutory Basic Exclusion: IRS statutory exemption amount ($13,610,000 individual / $27,220,000 married in 2025; $13,990,000 / $27,980,000 in 2026) ($).
• Marital Deduction: Unlimited deduction for qualifying property passed outright to a surviving US citizen spouse ($).
• Charitable Deduction: Deduction for direct bequests to qualified 501(c)(3) non-profit organizations ($).
• Federal Estate Tax Owed: Total tax obligation payable to the IRS within nine months of the date of death ($).

Estate valuations are established using fair market value as of the date of death, or under the alternate valuation date six months later if electing it reduces the gross estate.

Executors file IRS Form 706 within nine months of death, with an available six-month extension.

According to Internal Revenue Service (IRS), Rev. Proc. 2024-40, the federal estate tax basic exclusion amount for estates of decedents dying in calendar year 2025 is $13,610,000 ($27,220,000 for married couples electing portability).

To analyze how the step-up in cost basis at death compares with selling appreciated investment assets during life, check our Capital Gains Tax Calculator.

Effective wealth transfer and estate tax planning require mastering four central federal tax concepts.

While transfers to a US citizen spouse incur zero tax at the first death, those assets become part of the surviving spouse's estate. Electing portability on Form 706 preserves the deceased spouse's unused exemption.

Non-citizen spouses require a Qualified Domestic Trust (QDOT) to access marital deferral.

To aggregate your total personal assets and balance sheet liabilities before evaluating estate tax exposure, utilize our Net Worth Calculator.

Estimating your family estate tax liability takes only a few straightforward inputs in our interactive calculator.

1. 1 Aggregate gross asset values: Add up fair market values of all real estate, liquid investments, retirement accounts, private business interests, and life insurance policies.
2. 2 Select your filing status and tax year: Choose Individual ($13.61M exemption) or Married with Portability ($27.22M exemption in 2025) and select the relevant tax year.
3. 3 Enter debts and administrative expenses: Input outstanding mortgages, personal loans, funeral costs, and anticipated legal and probate administrative expenses.
4. 4 Input spousal and charitable deductions: Enter the value of assets transferring directly to a surviving spouse and bequests directed to qualified non-profit charities.
5. 5 Review tax liability and net inheritance: Examine the total federal estate tax liability, effective tax rate, and net wealth passed to non-spousal heirs.
6. 6 Consult with an estate planning attorney: Use these baseline projections to design tax-advantaged trusts, annual gifting programs, or ILIT life insurance structures.

Suppose a married couple in 2025 has accumulated a combined gross estate of $32,000,000. They have $500,000 in mortgages and leave $1,500,000 to charity. Deductions total $2,000,000, leaving a net taxable estate of $30,000,000. With married DSUE portability ($27,220,000 exemption), the taxable excess is $2,780,000. The calculator determines federal estate tax of $1,112,000 (40% of excess), leaving $30,388,000 in net wealth for heirs at an effective tax rate of just 3.48%.

To project future nest egg values and IRA balances that will eventually form your gross taxable estate, test projections with our Retirement Savings Calculator.

Utilizing an estate tax calculator provides crucial strategic advantages for families, financial advisors, and estate planning attorneys.

• • Immediate tax exposure clarity: Identifies precisely whether your family net worth exceeds statutory IRS exemption thresholds.
• • Portability election modeling: Demonstrates the immense tax savings of filing Form 706 to elect spousal portability and capture up to $27.22M in joint exclusions.
• • Charitable bequest optimization: Models how philanthropic gifts and charitable lead/remainder trusts reduce taxable estate excess dollar-for-dollar.
• • Life insurance liquidity sizing: Calculates the exact cash liquidity required by an Irrevocable Life Insurance Trust (ILIT) to prevent forced asset liquidation.
• • Annual lifetime gifting strategy: Provides the quantitative foundation for utilizing annual gift tax exclusions ($19,000 per recipient in 2025) to trim estate value.
• • State vs federal planning coordination: Helps distinguish between federal tax rules and separate state-level estate taxes with lower exemptions.

Estates facing millions in tax liabilities must pay the IRS in cash within nine months of death. If assets are illiquid, executors may face forced asset liquidations.

Using our calculator allows families to model liquidity requirements early.

For grandparents utilizing 5-year front-loaded gift tax exclusions to transfer wealth tax-free for education, explore our 529 Calculator.

Several legislative, legal, and valuation factors directly impact estate tax exposure and planning strategies.

• • This calculator models US federal estate tax rules and does not automatically calculate individual state estate or inheritance tax liabilities.
• • Generation-Skipping Transfer (GST) tax allocations and complex multi-generational dynasty trust rules require customized legal review.

A key factor is the scheduled sunset of the Tax Cuts and Jobs Act (TCJA). Without congressional action, the basic exclusion will revert to approximately $7 million per individual on January 1, 2026.

High-net-worth families frequently use SLATs, GRATs, and irrevocable trusts to utilize historically high exemptions.

According to IRS Instructions for Form 706, estates calculate gross estate value by aggregating all real property, investments, and business assets, subtracting allowable marital, charitable, and administrative deductions before applying statutory tax rates.

To review the broader individual and corporate provisions established under the Tax Cuts and Jobs Act, visit the Trump Tax Calculator.