529 superfunding in 2026: five years of gift exclusion in one deposit

Where the rule comes from

A deposit into a 529 is a gift to the beneficiary, treated as a present interest, so it qualifies for the yearly gift tax exclusion like a check would (26 U.S.C. 529(c)(2)). Section 529 adds one thing no other gift has: when a giver's deposits for one beneficiary pass the yearly exclusion, the giver may elect to have them taken into account ratably over the five-year period starting with that calendar year. The $19,000 figure for 2026 comes from Rev. Proc. 2025-32; it is indexed, and the 2027 figure was not yet published when we read the sources.

The section also says what a 529 deposit is not. It is not a qualified transfer under the educational exclusion that lets anyone pay a school's tuition directly without gift tax. The Form 709 instructions repeat it: deposits into a 529 do not qualify for the educational exclusion. A family that wants both can pay tuition straight to the college with one check and fund the account with another.

Making the election on Form 709

The IRS instructions for Form 709 set out the steps. The giver files a gift tax return for the year of the deposit and checks the box on line B at the top of Schedule A. An attached statement gives the total contributed for each beneficiary, the amount the election covers and the beneficiary's name. One fifth of the elected amount is reported that year and in each of the next four, with the deemed year in column (f) rather than the year the money moved.

The later four years need a return only if the giver has some other reason to file. Someone who makes no other reportable gift in those years files once and is done. The IRS example shows the other case: a giver who passed the five-year room reports the excess in the first year as an additional gift, on top of the first fifth.

A widowed giver who deposits $130,000 for one grandchild in 2026 can elect $95,000. The remaining $35,000 is reported as a gift in 2026, so that year's return shows $54,000, and that part draws on the lifetime exemption.

Couples, gift splitting and several children

Each spouse has a separate exclusion. When both own the money, each simply makes the deposit and the election on a separate return; spouses cannot file one joint gift tax return. When the money belongs to one of them, the couple can elect gift splitting, which treats the gift as made half by each. The instructions say that in general both spouses then file their own Form 709, that the consenting spouse signs a Notice of Consent, and that consent cannot be given after April 15 of the following year. Gift splitting is applied first; each spouse then decides on the five-year election separately.

The room multiplies by child. A couple with three children can place $570,000 across three accounts in one year, $190,000 each, with no lifetime exemption used. If they wanted to move $600,000 at once, $30,000 would sit outside the election.

Why a lump at once, and what it risks

The point of front-loading is time in the account. Under a 6 % assumed return, a couple's $190,000 deposited on day one would stand near $455,346 after 15 years. The same total fed in evenly over the five years would reach about $394,055. The gap is the reward for being early, and it is only as real as the return: a fall in the market just after a single large deposit hits all of it, while a spread deposit buys part of its shares after the fall.

The second risk is death within the five years. The statute puts back into the giver's gross estate the portion of the deposit allocated to the years after death (529(c)(4)(C)). Apart from that case and amounts paid out because the beneficiary died, no one's gross estate includes the account by reason of a 529 interest. The third is control: the owner of the account, not the child, decides on withdrawals and on changing the beneficiary, and a new beneficiary in a lower generation brings gift tax rules back into play.

The state deduction usually stays yearly

Federal gift tax lets a lump count as five years. State income tax rules mostly do not. A deduction capped at a fixed amount each year gives the same break for a deposit at the cap as for a deposit ten times larger. The table runs a $190,000 deposit by a couple at $300,000 of joint taxable income, one child, into the state's own plan, then follows any carryforward the state allows at the same income.

States that carry the excess forward, in the data we hold: Arkansas, Connecticut, the District of Columbia, Louisiana, Maryland, Ohio, Oklahoma, Rhode Island, Virginia, West Virginia and Wisconsin. In these the lump is worked off over later returns, within the same yearly cap and the number of years the state allows. New Mexico, South Carolina and West Virginia sets no dollar cap on the deduction in the rule we read, so a large deposit is deducted in one year, up to taxable income. In this run, the largest first-year break goes to South Carolina at $9,899.

A smaller timing lever exists in Georgia, Indiana, Iowa, Kansas, South Carolina and Wisconsin: their rules let a deposit made early in the year, by the filing deadline the state names, count for the year before. A lump split across that line can use two years of cap.

Virginia has a rule aimed at older givers: its note reads that owners age 70 or older may deduct the full amount contributed in one year. The grandparent page covers who can claim it.