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Gift Tax Calculator

Calculate gift tax implications with annual exclusion amounts, lifetime exemption tracking, and split gift strategies.

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.

How the result is produced

1

Apply the annual exclusion

The annual exclusion applies separately to each donor-recipient pair. The calculator compares the entered gift with the exclusion for the chosen year and identifies any excess. When gift splitting is selected, it models half of the qualifying gift as coming from each spouse and tests each half against that spouse's separate annual exclusion.

2

Track lifetime exemption

For a gift with no other applicable exclusion or deduction, the calculator adds the amount remaining after the annual exclusion to the lifetime exemption already used. The result shows how much additional exemption the gift consumes and whether the entered lifetime allowance is exceeded. A positive taxable gift can therefore coexist with no estimated tax due. This calculation is separate from determining whether Form 709 must be filed.

Good uses

  • Checking whether a planned cash gift to one child exceeds the donor's available annual exclusion for that year.
  • Comparing a gift made by one spouse with the result when the spouses make a valid gift-splitting election.
  • Estimating how several years of reportable gifts have reduced the lifetime exemption available for another planned transfer.

Limits and checks

  • Combine all eligible gifts from the same donor to the same recipient during the year. Each payment does not receive a new annual exclusion.
  • Gift splitting is a tax election with eligibility, consent, and reporting requirements. Selecting it in the calculator does not make the election.
  • The estimate does not resolve asset valuation, future-interest eligibility, generation-skipping transfer tax, state rules, or broader estate-planning consequences.

Common questions

Does a taxable gift result mean I owe that amount in tax?

No. The taxable gift is the portion remaining after applicable exclusions and deductions, not the tax itself. It generally reduces the donor's remaining lifetime exemption before federal gift tax becomes payable. Previous taxable gifts and available credit also matter. A federal gift tax return may still be required even when the estimated tax is zero.

Does selecting gift splitting in the calculator complete the election?

No. The selection only models the numerical effect of treating an eligible gift as made one-half by each spouse. The spouses must satisfy the legal requirements and consent to the election, and Form 709 filing may be required. The calculator cannot determine eligibility or complete the reporting step from the gift amount alone.

References and verification

The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.

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