Paperwork to complete if I make a 2024 non-deductible IRA contribution AFTER submitting my 2024 taxes?

[treehugger31]

I submitted my 2024 taxes but still need to make a 2024 non-deductible IRA contribution. If I make a 2024 non-deductible IRA contribution AFTER filing my 2024 taxes, what type of forms/paperwork do I need to complete? Thank you.

[dmertz]

A nondeductible traditional IRA contribution made for 2024 is required to be reported on a 2024 Form 8606.  If your filed tax return did not already include this form reporting this contribution in anticipation of making the contribution, you must amend the tax return to add the Form 8606.