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Process

How to Apply for EIN by Fax Guide

Apply for an EIN by faxing Form SS-4 to the IRS at 855-215-1627. 4-7 business day processing. Step-by-step guide for US and international applicants.

Apply for an EIN by faxing Form SS-4 to the IRS at 855-215-1627. Processing takes 4-7 business days. This is the primary method for non-US residents who cannot use the IRS online tool. The fax method is free, available worldwide, and faster than mail. ein.so handles the entire fax process for $49.

Process

How to Apply by Fax

Faxing Form SS-4 is the most reliable EIN application method for non-residents. No SSN required. Available from any country. Faster than mail (4-7 days vs 4-6 weeks). The IRS fax line operates 24/7 but processes forms during business hours.

Steps

Step-by-Step Fax Process

  1. Download Form SS-4 from irs.gov — SS-4 guide
  2. Complete all 21 fields — Use passport number on Line 7b if no SSN
  3. Write a cover page — Include return fax number and entity name
  4. Fax to 855-215-1627 — Confirm transmission
  5. Wait 4-7 business days — IRS faxes your EIN back
  6. Save your EIN — Use for bank accounts, taxes, etc.

Common Mistakes

| Mistake | Prevention | |---------|------------| | Missing Line 7b | Enter passport number | | Wrong entity type | Match your LLC/corp docs | | No return fax number | Include on cover page | | Duplicate submission | Fax once only |

Comparison

Fax vs Other Methods

| Method | Speed | SSN? | Cost | Best For | |--------|-------|------|------|----------| | Online | Instant | Yes | Free | US residents | | Fax | 4-7 days | No | Free | Non-residents | | Phone | Same day | No | Free | Comfortable callers | | Mail | 4-6 weeks | No | Free | Last resort | | ein.so | 4-7 days | No | $49 | Hands-off |

Summary

Summary

  • Fax to: 855-215-1627
  • Form: SS-4
  • Processing: 4-7 business days
  • Cost: Free (IRS) / $49 (ein.so)
  • SSN Required: No

EIN for non-residents | SS-4 guide | IRS fax number

Apply for your EIN — $49

Frequently Asked Questions

How do I apply for EIN by fax?

Complete Form SS-4, fax to 855-215-1627, wait 4-7 business days. Include a cover page with your return fax number. The IRS returns your EIN by fax.

Is fax free?

Yes. The IRS charges $0. Your cost is only the fax service itself. ein.so charges $49 for complete handling.

Can non-residents fax?

Yes. Non-residents fax to the same number. Use an online fax service or ein.so. No SSN required — use passport number.

What if my fax is rejected?

The IRS faxes a rejection notice explaining the issue. Fix the error and re-fax. See our EIN rejection guide.

How long does fax EIN take?

4-7 business days from the date the IRS receives your fax.

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Non-US resident? We file Form SS-4 with the IRS and deliver your EIN by email. Just $49.

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