how to apply for EIN number
An Employer Identification Number (EIN), also known as a Federal Tax Identification Number, is a unique nine-digit number assigned by the Internal Revenue Service (IRS) to identify businesses operating in the United States. Whether you are launching a new startup, forming an LLC or hiring your first employee, knowing how to apply for an EIN number documentation properly is a critical step in setting up your operational foundation.
Why Does Your Business Need an EIN?
While sole proprietors without employees can sometimes use their Social Security Number for business tax filing, obtaining an EIN provides important advantages for every business structure:
- Open a Business Bank Account: Most financial institutions require an official EIN to establish corporate or commercial bank accounts.
- Establish Business Credit: An EIN allows you to build credit under your business entity rather than relying on your personal credit profile.
- Hire Employees: Federal regulations require an EIN for payroll setup, tax withholding and state unemployment reporting.
- Protect Your Privacy: Using an EIN on W-9 forms, client contracts and vendor agreements keeps your personal Social Security Number private and safe from identity theft.
Step-by-Step Guide to Requesting Your Federal Tax ID
The process for obtaining a Federal Employer Identification Number involves preparing key business details and selecting the proper submission method.
| Application Method | Processing Time | Best For |
| Online Application | Immediate approval upon completion | U.S.-based businesses with a valid SSN or ITIN for the responsible party. |
| Fax Application | 4 to 7 business days | Applicants who prefer submitting paper forms directly to the IRS. |
| Mail Application | 4 to 6 weeks | Businesses without urgent filing deadlines or immediate banking needs. |
Determine Your Eligibility and Responsible Party
Before starting your application, you must designate a “responsible party.” This is the individual or legal entity that controls, manages or directs the applicant entity and the disposition of its funds. The responsible party must possess a valid Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN).
Gather Required Information
To ensure a smooth filing, collect the following details prior to beginning the application:
- Full legal name of the business entity or individual applicant.
- Trade name or DBA name, if applicable.
- Physical street address of the business (P.O. boxes are not permitted as the principal location).
- Entity type (Sole Proprietorship, LLC, Corporation, Partnership or Non-Profit).
- Reason for applying (such as starting a new business, hiring employees or opening a bank account).
- Primary business activity and principal products or services offered.
Submit Form SS-4
The official document used to request a tax identification number is IRS Form SS-4. Applying online directly through the IRS portal is the fastest route, generating an official EIN confirmation letter (CP 575) immediately upon completion. If filing via mail or fax, ensure all fields on Form SS-4 are completely filled out to prevent processing delays.
Conclusion
Securing your Employer Identification Number is a foundational milestone for any U.S. business. Having your EIN ready allows you to seamlessly open business bank accounts, apply for necessary local business licenses and establish proper hiring processes. Partnering with professional filing experts ensures your federal tax ID paperwork and initial state entity filings are completed accurately, giving you peace of mind to focus on growing your business.
