After you file

For the IRS

That really depends on what you are mailing and where you live....

https://www.irs.gov/uac/where-to-file-paper-tax-returns-with-or-without-a-payment

For State
Here's a link to California FTB for where to mail your return….
http://www.ftb.ca.gov/aboutFTB/add.shtml


View solution in original post