A contribution to a child’s Trump Account is a taxable gift, which requires the giver to fill out one of the IRS’s more complicated tax forms, Form 709. The 10-page document takes the average filer or their accountant more than six hours to complete, and the government has only accepted mailed submissions; that changes this coming tax season, when e-filing will become available.

It’s used by fewer than 225,000 households a year, federal data show, and is so obscure that commercial tax software like TurboTax doesn’t include it.

“If you want to apply for the $1,000 because your kid was born within the time period, fine. If your employer wants to make a contribution or you qualify for a contribution from a charitable organization … fine. But don’t put your own money in until this is clarified,” said Susan Bart, a lawyer who specializes in estate and gift tax.