IRS Form SS-4: Application for Employer Identification Number (EIN) – PDF & Instructions

About SS-4

Free IRS Form SS-4 (Application for Employer Identification Number (EIN)): download the official PDF, read instructions, and see where to file — mail, fax, or online.

This guide is part of the IRS forms cluster, which is designed to rank for PDF, instructions, and official-form intent while keeping the related fax workflow on the same page.

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Frequently Asked Questions

Where can I get the official SS-4 PDF?

This guide links to the official PDF and source page for SS-4 near the top of the page.

Can I fax SS-4 with Send Fax Pro?

Yes. Send Fax Pro supports document-first fax workflows and this guide explains how to review the official source before sending the packet.