Government

IRS: Form SS-4 (EIN Application) Fax Number

Apply for an Employer Identification Number by fax. Receive your EIN within 4 business days.

What to include

Completed Form SS-4, business name, responsible party name and SSN.

Fax numbers change without notice. Verify this number against the organization's official contact page or your paperwork before you send anything sensitive. Last verified March 16, 2026.

IRS: Form SS-4 (EIN Application) fax number FAQ

What is the IRS: Form SS-4 (EIN Application) fax number?+

The fax number for IRS: Form SS-4 (EIN Application) is 1-855-641-6935. Numbers change without notice, so verify it against the organization's official contact page or your paperwork before sending anything sensitive.

What should I include when faxing IRS: Form SS-4 (EIN Application)?+

Completed Form SS-4, business name, responsible party name and SSN.

Can I fax IRS: Form SS-4 (EIN Application) online without a fax machine?+

Yes. With FaxDrop you can fax IRS: Form SS-4 (EIN Application) from your computer or phone, no fax machine or phone line required. Upload your document, enter the number, and send. You get two free faxes a month, up to 5 pages including the cover page.

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