When starting a business in the United States, one of the first steps many entrepreneurs and organizations need to take is applying for an Employer Identification Number (EIN). This is done using the IRS SS-4 Form – Application for Employer Identification Number. The EIN acts much like a Social Security Number, but for a business entity, and is essential for tax reporting, hiring employees, and opening a business bank account.
What is the SS-4 Form?
The SS-4 Form is an official document provided by the Internal Revenue Service (IRS). Businesses, non-profit organizations, trusts, estates, and even some individuals use it to apply for an EIN. The EIN is a nine-digit number assigned by the IRS to uniquely identify a business entity for federal tax purposes.
An EIN is often required for:
- Filing federal and state taxes
- Hiring and paying employees
- Opening a business bank account
- Applying for business licenses or permits
- Establishing credit under a business name
Who Needs an EIN?
Not every business is required to have an EIN, but most do. Generally, you need one if your business:
- Has employees
- Operates as a corporation or partnership
- Withholds taxes on income other than wages paid to a non-resident alien
- Has a Keogh plan
- Is involved with certain types of organizations such as trusts, estates, or non-profits
Even sole proprietors without employees often apply for an EIN to separate business and personal finances.
How to Get the SS-4 Form?
The SS-4 Form can be downloaded directly from the IRS website in PDF format. After filling it out, you can apply for an EIN in different ways:
- Online – The fastest method via the IRS EIN Assistant.
- By Fax – Fill out and fax the form to the appropriate IRS office.
- By Mail – Mail the completed SS-4 Form, though this is the slowest option.
- By Phone – Only available for international applicants.
👉 Download IRS SS4 Form – Application for Employer Identification Number PDF
Key Sections of the SS-4 Form
When completing the SS-4 Form, you’ll be asked for information such as:
- Legal name and trade name of the business
- Responsible party’s name and Social Security Number (SSN) or ITIN
- Mailing address
- Type of entity (corporation, LLC, partnership, sole proprietorship, etc.)
- Reason for applying (new business, banking purposes, etc.)
- Number of employees expected in the next 12 months
- First date wages or annuities were paid, if applicable
It’s important to provide accurate details to avoid delays in processing.
Tips for Completing the SS-4 Form
- Double-check your entity type before submission.
- Ensure the responsible party’s information is correct.
- Use the official IRS PDF form for accuracy.
- If unsure, consult with a tax professional or accountant.
The IRS SS-4 Form – Application for Employer Identification Number is an essential step for anyone looking to establish or grow a business in the U.S. With an EIN, your business gains credibility and the ability to properly comply with tax obligations. Whether you’re a startup, non-profit, or established company, filling out and submitting this form ensures your business is legally recognized for federal tax purposes.