Form 5329 reports a taxpayer's use of a tax-advantaged savings plan that is subject to an IRS penalty. The form is filled out and submitted by the taxpayer with an annual Form 1040 or Form 1040-SR.

If you are not required to file your taxes with IRS Form 1040, you may file Form 5329 by itself and pay the excise tax owed. The IRS website offers instructions for Form 5329.