IRS Form SS-4 (EIN application)
Fax Form SS-4 to apply for an Employer Identification Number when you cannot apply online. If you include a return fax number, the IRS can fax the EIN back in about four business days.
Fax numbers
- Send with this number
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Send with this number
No U.S. state residence (within the U.S.)
+1 855-215-1627
Verified October 24, 2026. Source: official page.
Other IRS forms
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IRS Form 2553 (S corporation election)
Elect S corporation status
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IRS Form 2848 (Power of Attorney)
Authorize an eligible person to represent you before the IRS
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IRS Form 4506-T (tax transcript)
Request a tax transcript
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IRS Form 8821 (Tax Information Authorization)
Let someone inspect or receive your tax information
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