Tested tool guide
Tested browser tools
Checked August 16, 2026
What Gift Tax Calculator does, with a checked example
A gift larger than the annual exclusion does not necessarily create an immediate federal tax bill. Gift Tax Calculator compares a gift with the selected annual exclusion, models an eligible gift split between spouses, and tracks how much of the donor's lifetime exemption the excess would consume. It separates the total gift, taxable gift, exemption used, and estimated tax. The common surprise is that a taxable gift is not the tax owed. It is generally the portion counted against the donor's lifetime exemption.
Worked example
A concrete input and expected output from the current implementation.
Input
Tax year: 2024
Cash gift to one individual: $30,000
Earlier gifts to that individual during 2024: $0
Gift splitting with spouse: Yes
Annual exclusion per spouse: $18,000
Lifetime exemption previously used: $0
->
Expected output
Gift attributed to each spouse: $15,000
Annual exclusion applied per spouse: $15,000
Taxable gift: $0
Additional lifetime exemption used: $0
Estimated federal gift tax: $0
A valid split treats the $30,000 gift as $15,000 from each spouse. Each $15,000 share is below the stated $18,000 annual exclusion, so no part of this gift uses either spouse's lifetime exemption.