Where do i send my 1040x state return

 

After you file

What state?  Is it a state amended return?  Usually a 1040X is the federal amended return.

After you file

It is too early to amend 2017.

After you file

Form 1040X gets mailed to:

Without payment:
Department of the Treasury
Internal Revenue Service
Kansas City, MO 64999-0002

With payment:
Internal Revenue Service
P.O. Box 37008
Hartford, CT 06176-7008