Information For...

For you and your family
Standard mileage and other information

Forms and Instructions

Individual Tax Return
Instructions for Form 1040
Request for Taxpayer Identification Number (TIN) and Certification
Request for Transcript of Tax Return


Employee's Withholding Allowance Certificate
Employer's Quarterly Federal Tax Return
Employers engaged in a trade or business who pay compensation
Installment Agreement Request

Popular For Tax Pros

Amend/Fix Return
Apply for Power of Attorney
Apply for an ITIN
Rules Governing Practice before IRS

How to Contact Us

By mail (including overnight and express services):

Internal Revenue Service
Joint Board for the Enrollment of Actuaries
SE:RPO, Room 3422
1111 Constitution Avenue, NW
Washington, DC 20224

By e-mail:

If updating your address or other contact information, include:

  1. Name
  2. Enrollment number
  3. Prior contact information
  4. Change requested
  5. Best way to contact you (in case we need to contact you about change)
  6. Signature
  7. Date of request