What Is an EIN Number?
An EIN is a unique 9-digit number assigned by the IRS to identify your business for tax purposes. It’s also known as a Federal Tax ID Number and is used to:
- Open a business bank account
- File federal and state taxes
- Hire employees
- Apply for business licenses
How Do I Get My EIN Number?
You can apply for an EIN in several ways:
1. Apply Online (Fastest Method)
- Visit the IRS EIN Assistant
- Complete the form during business hours (Monday–Friday, 7 AM–10 PM EST)
- You’ll receive your EIN instantly
2. Apply by Fax
- Complete Form SS-4
- Fax it to: 855-641-6935 (for U.S. applicants)
- You’ll receive your EIN within 4 business days
3. Apply by Mail
- Mail Form SS-4 to:
Internal Revenue Service
Attn: EIN Operation
Cincinnati, OH 45999 - Processing time: About 4 weeks
4. Apply by Phone (International Applicants)
- Call 267-941-1099 (non-toll-free)
- This method is for applicants without a U.S. address or SSN
What If I Lost My EIN?
If you’ve already applied but misplaced the number:
- Check your original confirmation letter from the IRS
- Look on previous tax returns or bank account applications
- Call the IRS Business & Specialty Tax Line: 800-829-4933
Do I Need an EIN for My Business?
You need an EIN if you:
- Operate as an LLC or corporation
- Have employees
- File employment, excise, or alcohol/tobacco/firearms taxes
- Have a Keogh plan
- Withhold taxes on income (paid to a non-resident alien)
Final Thoughts
The answer to “how do I get my EIN number?” is simple: apply online or use IRS-approved methods like mail, fax, or phone. Once you have it, store your EIN safely—it’s as vital as your business license.
