Gift Tax Calculator

Two limits decide whether you owe gift tax

The federal gift tax runs on two numbers, and most families only ever touch the first one. The annual exclusion lets one person give $19,000 to each recipient in 2026 with no filing and no effect on any lifetime limit. It is a per person, per recipient allowance, not a cap on your yearly giving, so a couple with four grandchildren can hand out $76,000 in one afternoon and never fill in a form.

The second number is the basic exclusion amount, $15,000,000 per person in 2026. A gift above the annual exclusion does not create a tax bill by itself. It gets reported, it reduces that $15,000,000, and tax appears only after the running total of reportable gifts passes it. For a household giving away a car or helping with a down payment, the practical result is a one page return and nothing owed.

The IRS resets both figures each year for inflation, and the 2026 basic exclusion jumped from $13,990,000 because of the tax law signed in July 2025. The IRS estate and gift tax update page carries the current amounts. Because the numbers are indexed, a figure you memorized two years ago is probably low by a few hundred thousand dollars. The exclusion itself is written into section 2503 of the tax code, which is why any change to it has to pass Congress.

The 2026 gift tax numbers in one place

Every figure below applies to gifts made between January 1 and December 31, 2026. The annual exclusion is the only one most people need, but the rest explain what happens when a gift is larger than expected.

The $5,945,800 credit is not a separate allowance. It is the tax that $15,000,000 of exclusion would produce on the rate table, handed back to you as a credit. That is why the two numbers always move together.

Worked example: $25,000 to one child

A single parent gives one adult child $25,000 toward a house down payment in 2026. The first $19,000 disappears into the annual exclusion. The remaining $6,000 is a reportable gift, which means a Form 709 goes to the IRS by April 15, 2027, and the lifetime exemption drops from $15,000,000 to $14,994,000.

The tax on that return is $0. The tentative tax on $6,000 is $1,080, and the unified credit of $5,945,800 wipes it out completely. Filing does not mean paying. It means the IRS now has a record of how much of the lifetime exemption you have spent, which is the whole point of the form.

Now give the same $50,000 as a married couple who agree to split gifts. Each spouse is treated as giving $25,000, so the combined exclusion is $38,000 and only $12,000 is reportable. Both spouses file a Form 709, both sign the consent, and the couple's combined exemption falls by $12,000. Splitting turns a $12,000 reportable gift into a $12,000 reportable gift instead of $31,000, which is the difference between using a little exemption and using a lot.

Small gifts add up faster than people expect when there are several recipients. Four grandchildren at $19,000 each is $76,000 out the door with no return, no exemption used, and no tax. That is the single most efficient shape a gift can take.

How the unified credit turns a reportable gift into a bill

Gift tax is calculated on the total of all reportable gifts you have made in your life, not on the gift in front of you. The IRS adds the new gift to the old total, runs the combined figure through the rate schedule, subtracts the tax that the earlier gifts would have generated, and then applies whatever credit is left. In practice you pay nothing until cumulative reportable gifts pass $15,000,000.

Push past it and the arithmetic is simple. A single gift of $16,000,000 leaves $15,981,000 reportable after the annual exclusion. The tentative tax on that amount is $6,338,200, the credit covers $5,945,800, and the difference is $392,400. That is exactly 40% of the $981,000 that sits above the $15,000,000 line, which is the number worth remembering.

The rate table only matters for people who give away more than $15,000,000 in total. Everyone below that line pays a flat zero, no matter which bracket the calculator shows for the reportable slice.

Who files Form 709, and what happens if you skip it

Form 709 is filed by the donor, one return per person. A married couple who split gifts files two returns, and each one reports the gifts that spouse is treated as making. There is no joint gift tax return, which surprises people who are used to filing their income tax jointly.

The deadline for 2026 gifts is April 15, 2027. Filing Form 8892 gets an automatic extension to October 15, 2027, and it also extends the income tax return if you need that. The return reports the gift, the annual exclusion applied, any gift splitting, and the amount of lifetime exemption used. No money changes hands when the credit covers the tax.

Skipping the return is the expensive mistake. The penalty starts at 5% of the tax due per month, up to 25%, and it can apply even when no tax is owed because the return was required for disclosure. There is no statute of limitations running on an unfiled return, so a gift from 2019 can still surface during an estate settlement and complicate the numbers for your heirs.

Valuation is the other trap. Cash is easy. A house, a share of a business, or a piece of art needs a defensible value, and the IRS can challenge it years later. The agency's own Form 709 instructions spell out what counts as adequate disclosure, and a qualified appraisal attached to the return is what starts the three year clock.

Gifts that never touch the annual exclusion

Some transfers are excluded from gift tax entirely, and they do not use up the annual exclusion or the lifetime exemption. Knowing them can save a filing.

• Tuition and medical bills paid directly. Pay a college or a hospital yourself and the payment is not a gift, no matter the size. Hand the same money to your grandson and it is.
• Gifts to a spouse. The unlimited marital deduction covers transfers between spouses, as long as the recipient spouse is a US citizen. A non-citizen spouse gets a much smaller annual allowance.
• Gifts to charity. Donations to a qualified charity are deductible rather than taxable, and the annual exclusion does not come into it.
• Political gifts. Contributions to political organizations are outside the gift tax rules.
• The five year 529 election. You can front load five years of annual exclusions into a 529 plan, which is $95,000 per beneficiary in 2026, and treat it as if it were spread over five years. A married couple splitting can move $190,000 at once.

The 529 election is the one people ask about most. It uses five years of exclusion in a single year, so you cannot give that same child another $19,000 until the fifth year is up without creating a reportable gift. Form 709 is still required to make the election.

Gift tax and estate tax share one bucket

The exclusion is unified, which means gifts during life and the estate at death draw on the same $15,000,000. Give away $5,000,000 in reportable gifts and $10,000,000 is left to shelter the estate. There is no separate gift tax allowance sitting off to the side.

That is why large gifts are often described as moving appreciation out of the estate. A $1,000,000 gift today uses $1,000,000 of exclusion, and if the asset triples, the extra $2,000,000 escapes estate tax entirely. The tradeoff is that you lose the step up in basis on gifted assets, so heirs may owe capital gains tax on the growth when they sell.

Portability is the other piece. When one spouse dies, the surviving spouse can inherit the unused exclusion, which is called the deceased spousal unused exclusion amount, by filing a timely estate tax return. Without that election the unused amount is lost. A surviving spouse can end up with $30,000,000 of exclusion, but only if someone filed the paperwork.

State taxes are separate again. A dozen states and the District of Columbia impose their own estate tax, some with thresholds as low as $1,000,000, and a few of them have no portability between spouses. A gift that is federally free can still change a state estate tax bill, which is a conversation for a local professional rather than a calculator.

Mistakes that create a filing you did not expect

Most surprise Form 709s come from one of five habits. The first is treating the annual exclusion as a yearly total rather than a per recipient limit, which leads people to stop at $19,000 across the whole family. The second is forgetting that a forgiven loan is a gift, including a private mortgage you decide not to collect.

The third is paying someone's rent or credit card bill directly. That is a gift of cash, unlike paying a hospital or a school directly for services. The fourth is adding a child to a deed or a brokerage account, which is a gift of half the value at the moment the name goes on. The fifth is ignoring gift splitting, which doubles the shelter but requires both spouses to file.

One more habit worth breaking is assuming the recipient pays. The donor owes the tax, and if the donor does not pay it, the IRS can pursue the recipient only in narrow cases. The person opening the envelope is almost never the one with the liability.

This is an estimate for planning, not tax advice. Exclusion amounts and filing rules change, and state rules differ, so confirm the figures for a real gift with the IRS or a tax professional.