After you file

8606 instructions

"When and Where To File

File 2018 Form 8606 with your 2018
Form 1040 or 1040NR by the due date,
including extensions, of your return.
If you aren’t required to file an
income tax return but are required to file
Form 8606, sign Form 8606 and send it
to the IRS at the same time and place

you would otherwise file Form 1040 or
1040NR. Be sure to include your
address on page 1 of the form and your
signature and the date on page 2 of the
form."


https://www.irs.gov/filing/where-to-file-addresses-for-taxpayers-and-tax-professionals-filing-form-1...

**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**