Where do I mail in prior year 8606 form? I just need to do it for 2018

[bondtradercu]

As above - would love to know. Do I need to attach a letter of explanation?

[fanfare]

get 2019 Form 1040-X from IRS website and mail it in with your 2018 Form 8606, which you can also get in fillable PDF.

https://www.irs.gov/pub/irs-prior/f1040x--2019.pdf

Note: since you are not changing any dollar amounts on your amended tax return, you can leave all the lines 1-23 EMPTY.

Part III explanation: "didn't include Form 8606 with original return". OR whatever other reason.

mail to the address in the latest Instructions for Form 1040-X

@bondtradercu