Internal Revenue Service (U.S. Taxes)

There is no Internal Revenue Service (IRS) office at the U.S. Embassy and Consulate in Vietnam. The ACS staff is unable to answer inquiries about the preparation and filing of U.S. taxes.

International Taxpayer Services

If you are a taxpayer who lives outside the United States and have specific individual or business account questions, you may contact the International Taxpayer Service Call Center by phone or fax.

The call center is operational Monday through Friday, from 6:00 AM to 11:00 PM, Eastern Time:

  • Tel: 001-267-941-1000 (not toll free) ; select the option for international callers
  • Fax: 001-267-941-1055 (a response should be received within 10 to 12 working days)

 Individual taxpayers located outside the U.S. may also contact the IRS by mail at:
Internal Revenue Service
International Accounts
Philadelphia, PA 19255-0725

Business taxpayers located outside the U.S. may also contact the IRS by mail at:
Internal Revenue Service
International Accounts
Ogden, UT 84201-0038

The State Department reminds all U.S. Citizens and Legal Permanent Resident Aliens that you are responsible for filing U.S. federal income tax returns while living overseas.

Publications & Forms

Click these links from the IRS for comprehensive guidance and downloadable forms for International Tax Payers:

More useful links:

Need someone to prepare your tax return?

The IRS maintains a directory of Federal Tax Return Preparers with Credentials and Select Qualifications located worldwide.