Paycheck planning

Estate Tax Calculator

Estimate 2026 US federal estate tax from gross estate value, debts and expenses, charitable deductions, and marital deduction using the exemption and flat-rate assumptions implemented in the live calculator.

Last reviewed May 17, 2026 by ToolSpilo Editorial Team.

Review method: Reviewed against current IRS 2026 estate-tax guidance, exemption tables, and gift-tax exclusion guidance; stale 2024 values were replaced and the simplified scope was clarified.

For informational purposes only. Not financial, investment, or tax advice. Results are estimates based on the inputs provided. Consult a qualified financial professional before making financial decisions.

Calculator tool

How this calculator works

Use the explanation to understand the formula, assumptions, and practical limits behind the calculator result.

What This Calculator Estimates

This calculator gives a simplified 2026 US federal estate-tax estimate. It subtracts the entered deductions from the gross estate, applies the 2026 federal exemption used by the live tool, and taxes the amount above that exemption at 40%.

2026 Inputs Used by the Calculator

ItemAmount used
Federal exemption15,000,000
Tax rate above exemption40%

Calculation Steps

Where:

  • GG — gross estate
  • DD — debts and expenses
  • CC — charitable deductions
  • MM — marital deduction
  • EE — federal exemption
Adjusted estate=GDCM\text{Adjusted estate} = G - D - C - M
Taxable estate=max(Adjusted estateE,0)\text{Taxable estate} = \max(\text{Adjusted estate} - E, 0)
Estimated estate tax=Taxable estate×40%\text{Estimated estate tax} = \text{Taxable estate} \times 40\%

Worked Example

If the gross estate is 18,000,000, debts and expenses are 500,000, and there are no charitable or marital deductions:

StepResult
Adjusted estate17,500,000
Less federal exemption15,000,000
Taxable estate2,500,000
Estimated federal estate tax1,000,000

What This Estimate Leaves Out

Actual estate-tax filings can involve lifetime taxable gifts, unified credit details, portability elections, valuation issues, special-use rules, state estate taxes, state inheritance taxes, and legal planning structures. Those items are not modeled here.

Use this calculator for a first-pass estimate, then verify a real estate-plan or filing question with a qualified tax professional.

Frequently asked questions

What is included in a gross estate?

The gross estate can include cash, securities, real estate, insurance interests, annuities, trusts, business interests, and other assets owned or controlled at death. The IRS uses fair market value, not necessarily original purchase price.

What deductions does this calculator allow?

The live tool lets you enter debts and expenses, charitable deductions, and marital deduction. Those reduce the adjusted estate before the exemption is applied.

What is the 2026 federal estate-tax exemption?

The live calculator uses 15,000,000 as the 2026 federal exemption amount. If the adjusted estate is below that figure, the calculator shows no federal estate tax.

Does annual gifting appear in this calculator?

No. The calculator does not model gifting strategy. The 2026 annual gift-tax exclusion is a separate rule, and any serious estate plan should be reviewed separately from this simplified estate-tax estimate.