Quick Read

Married grandparents can superfund a 529 with $190,000 per grandchild, removing it from their taxable estate immediately via one election on Form 709.

Four grandchildren let a married couple remove $760,000 from their estate in one afternoon, with all future investment growth excluded too.

Dying within the five-year window claws the unused contribution back into your taxable estate, making this strategy riskier for donors in fragile health.

Are you ahead, or behind on retirement? SmartAsset’s free tool can match you with a financial advisor in minutes to help you answer that today. Each advisor has been carefully vetted, and must act in your best interests. Don’t waste another minute; learn more here.

If you have grandchildren and a 529 college savings plan (or the ability to open one), the IRS lets you and your spouse shovel $190,000 per grandchild out of your taxable estate in a single afternoon, with no gift tax, no estate tax, and no lawyer required. The trick is a quirky provision called 529 “superfunding,” and it lives inside one election on one IRS form. Most grandparents never hear about it from their advisor because it only shows up when you ask.

Three people, two older adults and one younger woman, sit at a wooden table in a well-lit room. The younger woman, with long dark hair and wearing a light blue jacket, holds a pen and gestures towards papers. The older man, with gray hair and a beard, smiles at her while holding documents. The older woman, with dark hair and a light cardigan, listens attentively with her hands clasped. A silver laptop is visible on the right side of the table.

imtmphoto / iStock via Getty Images The Five-Year Front-Load Nobody Mentions

Normally, you can give any one person up to the annual gift tax exclusion each year without eating into your lifetime estate exemption. For 2026, that annual exclusion sits at $19,000 per donor, per recipient. 529 plans get a special deal: you are allowed to treat a single lump-sum contribution as if you had spread it evenly over the current year and the next four. That means one donor can drop $95,000 into a grandchild’s 529 today and treat it as five years of $19,000 gifts. A married couple electing to split gifts doubles it to $190,000. The money leaves your estate immediately. The growth leaves your estate too.

_________________________________

What’s Your Number…?

Here’s a question most people 5y from retirement can’t answer: at your current savings rate, how much do you need, and how long will it actually last? A good advisor can put a date on that in a single meeting. SmartAsset’s free quiz matches you with up to three fiduciary advisors serving your area, so you can get YOUR retirement number now (sponsor)

__________________________________________

Where the Rule Actually Lives

The five-year election is written directly into Internal Revenue Code Section 529(c)(2)(B), and the mechanics are spelled out on IRS Form 709 (the United States Gift Tax Return), Schedule A, where you check the box electing to treat the contribution ratably over five years. The $19,000 annual exclusion figure for 2026 comes from Revenue Procedure 2025-32, the IRS’s inflation adjustment release from October 2025.

Story Continues