Backdoor Conversion Trad IRA to Roth IRA Form 8606

rimee

I did a backdoor conversion through Fidelity $7000 from Traditional to Roth IRA. I received a 1099-R and it shows:

Box 1: 7,000

Box 2a: 7,000

Box 7: 2

IRA/SEP/Simple: yes

I filled out my 1099-R under the income section and answered all the questions appropriately. I also filled out all my answers approoriately under deductions → IRA contributions, but my form 8606 box 8 shows up blank even though I did the conversion in Dec 2025.

If box 8 is left as blank, it states that it may be treated as a taxable deduction. However, I did a backdoor, so box 8 should say $7,000.

Box 16, however, shows $7,000.

Please help! I am desperately in need of advice. Thank you.

MatthewD

Hi Rimee,

From what you described, you entered the Backdoor Roth conversion perfectly. Line 8 of the Form 8606 is used when you need to use the pro rata rule when you have traditional IRA and Roth IRA distributions that are mixed, some being taxable and some are not. When doing a backdoor Roth conversion line 8 of Form 8606 is not used.

See this article to check your work:
https://community.freetaxusa.com/kb/articles/171-reporting-a-backdoor-roth-basic-scenario-2024-and-later

Also, fee free to contact Customer Support and ask a tax expert to check your work.