A single lump-sum 529 contribution can front-load up to five years of annual gift tax exclusions, without using any lifetime gift tax exemption.
How it works
The maximum lump sum is five times the annual gift tax exclusion per donor — doubled for a married couple electing gift-splitting. Form 709 is filed in the contribution year, reporting one-fifth of the gift, with no further filing needed in years two through five absent other reportable gifts.
What this does not include
If the donor dies during the 5-year period, the portion allocated to years after death is generally includable in the donor’s estate — a real complication this calculator’s mechanics-only computation doesn’t model.
How to use this calculator
- Enter the current-year annual gift tax exclusion.
- Select whether one or two donors (gift-splitting) are contributing.
Frequently asked questions
Do I have to file anything for this election?
Yes — Form 709 in the year of the lump-sum contribution, reporting one-fifth of the gift; no return is needed in the following four years unless other reportable gifts are made.
Can I make another gift to the same beneficiary during the 5-year period?
Additional gifts during those years count against the same annual exclusion already allocated, potentially triggering gift tax or using lifetime exemption if they push the total over the exclusion.
What if the donor dies before the 5 years are up?
The unallocated portion (years after death) is generally pulled back into the donor’s taxable estate — a complication requiring specific estate-planning advice this calculator doesn’t address.
