IRC 2513: Gift-Splitting Election, Form 709, and GST Exemption

The gift-splitting election lets a married couple treat any gift one spouse makes to a third party as if half came from each of them, which doubles the annual gift tax exclusion available for that recipient. For 2026, the annual exclusion is $19,000 per recipient, so a couple that splits gifts can transfer up to $38,000 to each person without owing gift tax or using any of either spouse’s lifetime exemption.¹ The mechanics are simple. The consequences that ride along with the election are not, and skipping the paperwork or misjudging the reach of the consent can cost real money.

Who Can Elect to Split Gifts

Four conditions must all hold at the moment the gift is made:

The couple is legally married to each other.
Each spouse is a U.S. citizen or U.S. resident. A non-citizen living in the United States qualifies; a non-citizen living abroad does not.
The gift goes to someone other than the other spouse. Spousal gifts already qualify for the unlimited marital deduction and need no splitting.
Neither spouse remarries anyone else during the remainder of the calendar year.

Divorce alone does not disqualify a gift made earlier in the year. If a couple gives $50,000 to their child in March and divorces in September, the March gift can still be split as long as neither former spouse remarries before December 31. Gifts made after the divorce cannot be split, because the couple was no longer married when those transfers happened.²³

If a spouse dies during the year, the surviving spouse can still split gifts that were made while both were alive, and the decedent’s executor signs the consent. Gifts the survivor makes after the date of death cannot be split. If no executor has been appointed by the filing deadline, there is no mechanism for the survivor to consent on the decedent’s behalf.³

How to Make the Election on Form 709

Gift splitting is never automatic. You must formally elect it by filing Form 709, the federal gift tax return, even if every gift falls below the annual exclusion after splitting. The IRS is explicit: a return is required to split gifts regardless of amount.⁴ Couples who skip filing because the amounts feel small have defeated the election entirely.

The donor spouse files Form 709 and reports the full value of each gift on Schedule A, with the split amount shown in the appropriate column. Starting with the 2025 form, the consenting spouse no longer signs the donor’s return. Instead, the consenting spouse signs a separate Notice of Consent that gets attached to the donor’s return. It must carry a dated signature and a statement that the consenting spouse elects to treat all third-party gifts as made one-half by each spouse.⁴ If both spouses made gifts during the year, each executes a Notice of Consent to attach to the other’s return.

Form 709 is due April 15 of the year following the gift. An extension of your individual income tax return using Form 4868 automatically extends the gift tax return. If you don’t need an income tax extension, Form 8892 gives a separate six-month extension for the gift tax return alone. An extension postpones the filing deadline, not the payment deadline for any gift tax owed.⁵

The All-or-Nothing Rule

Once you elect to split gifts for a calendar year, the election applies to every qualifying third-party gift either spouse made during that year while married. You cannot pick and choose which gifts to split.³ If one spouse made a large gift that benefits from splitting while the other made a separate gift that would have been better left alone, the election sweeps in both.

What the Election Actually Saves

With the 2026 annual exclusion at $19,000, a couple that splits gifts can transfer up to $38,000 per recipient with no gift tax and no reduction of either spouse’s lifetime exemption.¹ A couple with three children can move $114,000 in a single year. Add in-laws and grandchildren and the annual capacity climbs quickly. Over a decade of consistent giving, that is a meaningful shift of wealth out of a taxable estate.

Above the doubled exclusion, the excess draws down each spouse’s lifetime exemption, which stands at $15,000,000 per person for 2026 following the One, Big, Beautiful Bill signed into law on July 4, 2025.¹ Say one spouse gives $80,000 to a child in 2026 and the couple elects to split. Each spouse is treated as giving $40,000. After the $19,000 annual exclusion, each has a $21,000 taxable gift that chips away at their $15,000,000 lifetime exemption. Each spouse tracks the cumulative reduction on their own Form 709.²

Doubling the GST Exemption Too

For gifts to grandchildren or to trusts skipping a generation, splitting also doubles the generation-skipping transfer (GST) exemption applied to the transfer. Each spouse becomes the transferor of half the gift for GST purposes and can allocate their own GST exemption to that half.⁶ If one spouse funds a dynasty trust with $1,000,000 and the couple splits, each is treated as transferring $500,000 and each allocates $500,000 of GST exemption. Without splitting, only the donor spouse’s exemption would apply. When GST-taxable gifts are being split, the donor must complete Schedule D of Form 709.⁴

Joint and Several Liability for the Year’s Gift Tax

Once you consent, both spouses are jointly and severally liable for the entire gift tax owed for that calendar year, not only the tax on the specific gift that prompted the election.² The IRS can collect the full amount from either spouse regardless of who made a particular gift. If your spouse made other taxable gifts during the year that you were not aware of, you are still on the hook for the tax, penalties, and interest.

For couples with shared finances and shared goals, this is usually academic. In marriages with separate accounts, business interests, or any tension, it is not. Know the full scope of the year’s giving before you sign the Notice of Consent. Once signed, unwinding the liability because you didn’t know about a particular gift is not on the table.

Trusts Where the Non-Donor Spouse Is a Beneficiary

Splitting gets restricted, and sometimes blocked, when the recipient is a trust that names the non-donor spouse as a possible beneficiary.

If the donor gives the other spouse a general power of appointment over the transferred property (the power to direct it to themselves, their estate, or their creditors), the statute prohibits splitting the gift entirely.²

If the non-donor spouse is only a discretionary beneficiary, splitting may still be available, but only if the other beneficiaries’ interests are “ascertainable and severable” from the spouse’s interest under Treasury Regulations. If they cannot be separated, no part of the transfer qualifies for split treatment.³ Distributions to the spouse limited to an ascertainable standard (health, education, support, or maintenance), combined with a spouse whose finances make distributions unlikely in practice, can preserve eligibility. The cleanest drafting approach is to leave the non-donor spouse out of the trust.

If the non-donor spouse holds a Crummey withdrawal power over part of a trust contribution, that portion cannot be split. Portions withdrawable by other beneficiaries can still qualify.

Community Property: A Different Starting Point

In community property states, a gift of community property is already treated by the IRS as made half by each spouse, no election required. Each spouse files their own Form 709.⁴ The gift-splitting election matters only when one spouse gives away separate property, meaning assets received individually as a gift or inheritance during the marriage.⁷ Because the all-or-nothing rule applies, electing to split a gift of separate property sweeps in every other third-party gift made that year.

Revoking or Changing the Election

The election is hard to undo. Either spouse can revoke by filing a signed statement of revocation, but only on or before April 15 of the year following the gift.⁸ If consent is first given after April 15 (for example, on a return filed under extension), the regulations provide no revocation right at all. A late-filed consent is immediately permanent.

A separate timing rule blocks consent altogether once a notice of deficiency has been sent to either spouse for that year’s gift tax.² Couples cannot retroactively split after the IRS has flagged a return.

Decide before you file, and be certain.

Combining Splitting with 529 Front-Loading

One of the highest-value uses of gift splitting involves 529 college savings plans. Federal tax law lets a donor front-load up to five years of annual exclusion gifts into a 529 in a single contribution, spread evenly over the five years for tax purposes. For 2026, one person can contribute up to $95,000 ($19,000 × 5) to a single beneficiary’s 529 with no gift tax exposure in any of those years.

Combined with gift splitting, the ceiling doubles to $190,000 per beneficiary in a single contribution. Each spouse is treated as giving $19,000 per year for five years. The donor must file Form 709 for the contribution year and report the five-year election, and both spouses must consent to gift splitting for each of those five years.⁴ Any additional gifts either spouse makes to the same beneficiary during the five-year spread can push a year over the exclusion and create a taxable gift.

Adequate Disclosure Closes the Audit Window

Filing Form 709 starts a three-year period during which the IRS can examine the return and challenge reported values. That clock only starts if the gift is adequately disclosed.⁹ Listing the gift is not enough. The return or an attached statement must describe the property and any consideration received, identify the transferor and each recipient with their relationships, provide the trust’s tax ID and terms (or the trust document itself) if a trust is involved, and explain how fair market value was determined with supporting financial data such as balance sheets or appraisals.

If a gift is inadequately disclosed, the IRS can assess tax on it at any time. For split gifts, both spouses carry that open-ended exposure through joint and several liability. Thorough disclosure is the price of locking in the three-year cutoff, and it is worth paying.

1
Internal Revenue Service. What’s New — Estate and Gift Tax
2
Office of the Law Revision Counsel. 26 USC 2513 – Gift by Husband or Wife to Third Party
3
eCFR. 26 CFR 25.2513-1 – Gifts by Husband or Wife to Third Party Considered as Made One-Half by Each
4
Internal Revenue Service. Instructions for Form 709 (2025)
5
Internal Revenue Service. Instructions for Form 8892 (12/2024)
6
govinfo.gov. 26 CFR 26.2652-1 – Transferor Defined; Other Definitions
7
Internal Revenue Service. Publication 555, Community Property
8
govinfo.gov. 26 CFR 25.2513-3 – Revocation of Consent
9
eCFR. 26 CFR 301.6501(c)-1 – Exceptions to General Period of Limitations on Assessment and Collection