Internal Revenue Service (U.S. Taxes) Contact

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If you are a taxpayer with specific individual or business account questions you should contact the International Taxpayer Service Call Center by phone or fax. The International Call Center is operational Monday through Friday, from 6:00 a.m. to 11:00 p.m. (American Eastern Time):

Phone: +1-267-941-1000
Fax:      +1-267-941-1055
Mail:
Internal Revenue Service
International Accounts
Philadelphia, PA 19255-0725
USA

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

If you are a tax professional or software provider calling about an e-file issue and it is not account related, please contact the e-help office in Austin at +1-512-416-7750. Assistors are available Monday through Friday, from 7:00 a.m. to 6:00 p.m. (American Central time).  See also the following information: