Where to File Form 1040NR, 1040PR, and 1040SS Addresses for Taxpayers and Tax Professionals filing INTERNATIONAL during Calendar Year 2021. Use this address if you are a taxpayer or tax professional filing International for Form 1040 Use this address if you are a taxpayer or tax professional filing International for Form 1040-ES Use this address if you are a taxpayer or tax professional filing International for Form 1040-ES(NR) Use this address if you are a taxpayer or tax professional filing International for Form 1040V Use this address if you are a taxpayer or tax professional filing International for Form 1040X Use this address if you are a taxpayer or tax professional filing International for Form 4868 Form 1040NR, 1040PR, or 1040SS If you are not enclosing a payment then use this address... If you are a Taxpayer or Paid Preparer preparing your return and enclosing a payment then use this address... Department of the Treasury Internal Revenue Service Austin, TX 73301-0215 USA Internal Revenue Service P. O. Box 1303 Charlotte, NC 28201-1303 USA