What Is a Tax ID Number?
A Tax ID number is a nine-digit number issued by the Internal Revenue Service (IRS). It identifies your business for federal tax purposes, similar to how a Social Security Number (SSN) identifies an individual.
The Tax ID number is also known as:
- Employer Identification Number (EIN)
- Federal Tax Identification Number
Who Needs a Tax ID Number?
You will need a tax ID number if:
- You hire employees
- Your business is a partnership, corporation, or multi-member LLC
- You file certain tax returns (e.g., excise tax, employment tax)
- You open a business bank account
- You apply for business licenses or permits
How Do I Get a Tax ID Number?
Here’s a step-by-step guide on how to apply:
- Determine Your Eligibility
You must have a valid Taxpayer Identification Number (SSN, ITIN, or EIN) to apply. - Apply Online Through the IRS
- Visit irs.gov
- The application is free and available Monday to Friday
- You will receive your EIN immediately after completing the form
- Other Application Methods
- Fax: Complete Form SS-4 and fax it to the appropriate number
- Mail: Send Form SS-4 to the IRS (takes 4–5 weeks)
- Phone (International Applicants Only): Call +1-267-941-1099
How Long Does It Take to Get a Tax ID Number?
- Online Application: Instant
- Fax: 4 business days
- Mail: Up to 5 weeks
Need Help with the Process?
Services like FormLLC.us can help streamline your business registration and EIN application—especially if you’re forming an LLC or corporation.
Final Thoughts
So, how do you get a tax ID number? The easiest way is to apply online through the IRS website. It’s free, fast, and necessary for most business activities.
Still have questions? Contact FormLLC.us to get expert help with your EIN and business formation needs today.
