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IRS · verified routing workflow

Fax IRS Form SS-4 for an international EIN — sending from within the U.S.

Current IRS international EIN fax route for applicants without a U.S. legal residence or principal place of business who are faxing from within the United States.

✓ verified routing workflowLast verified: 2026-09-29

Before you fax

This number is specifically the IRS route for international/territory applicants when the fax itself is sent from within the United States. Check the official IRS page before sending because Fax-TIN numbers may change without notice.

Official source checkedwww.irs.gov ↗
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Start with the task — not the fax number.

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