What Is an EIN Number?
An Employer Identification Number (EIN) is a 9-digit number assigned by the IRS to identify a business for federal tax purposes. It’s like a Social Security Number, but for your company. You’ll need it to open a business bank account, hire employees, and file taxes.
Who Needs an EIN?
You need an EIN if you:
- Run an LLC, corporation, or partnership
- Hire employees
- Operate a trust, estate, or nonprofit
- Open a business bank account
- Apply for business licenses or permits
How to Get an EIN Number
1. Apply Online (Fastest Method)
- Visit the IRS EIN Assistant:
irs.gov EIN Application Page - Complete the form (takes about 10 minutes)
- Receive your EIN immediately after submitting
Note: This option is available to U.S.-based applicants and runs Mon–Fri, 7 a.m.–10 p.m. EST.
2. Apply by Fax or Mail
- Download IRS Form SS-4: Form SS-4 PDF
- Fax to:
- 855-641-6935 (U.S.)
- 304-707-9471 (International)
- Mail to:
Internal Revenue Service
Attn: EIN Operation
Cincinnati, OH 45999
Processing Time:
- Fax: ~4 business days
- Mail: ~4–6 weeks
3. Apply by Phone (For International Applicants)
If you don’t have a U.S. SSN or ITIN:
- Call the IRS at +1-267-941-1099
- Hours: Monday–Friday, 6:00 a.m. to 11:00 p.m. (ET)
- Provide answers from the SS-4 form over the phone
Is Getting an EIN Free?
Yes — applying directly through the IRS is 100% free. Be cautious of third-party websites charging fees for something you can do yourself at no cost.
What You’ll Need to Apply
- Legal name of the business or entity
- Responsible party’s name and SSN or ITIN (if applicable)
- Business address
- Type of business structure (LLC, Corporation, etc.)
- Reason for applying (e.g., starting a new business)
Final Tips
- Save your EIN confirmation letter (CP 575) for your records
- You can only get one EIN per day per responsible party
- Foreign applicants may leave SSN fields blank if unavailable
Conclusion
Knowing how to get an EIN number is essential for legally running and growing your business in the U.S. Whether you’re a citizen or foreign entrepreneur, the IRS offers accessible and free options to help you secure your EIN quickly.
