Method
The calculator subtracts deductions from gross estate, adds prior taxable gifts for exemption planning context, subtracts the entered exemption and applies the entered tax rate to the taxable amount.
Example
If a gross estate is $15,000,000, deductions are $1,000,000 and exemption is $13,610,000, taxable estate is $390,000 before prior gift adjustments. At 40%, estimated tax is $156,000.
Common mistakes
Do not assume one federal exemption covers every estate situation. State, inheritance, trust and portability rules may also matter.
Limitations
This is not estate planning, legal or tax advice. It excludes state/provincial taxes, valuation discounts, portability, trusts, gifts, inheritance rules and filing requirements unless represented manually in the inputs.
References
- IRS: Estate tax, accessed 2026-05-17.
Last reviewed: 2026-05-17