What Form SS-4 Is For
Form SS-4 is the application form used to request an Employer Identification Number that identifies business entities for tax filings with the Internal Revenue Service. The form includes the legal name of the entity, the responsible party details, the mailing address, and the line of business so the agency can assign a federal tax ID number for tax return requirements and business activities.
When You’d Use Form SS-4
You use Form SS-4 when your business needs an Employer Identification Number for payroll filings, business licenses, business bank account enrollment, or federal forms such as Form 941 or Form 944. Sole proprietors, single-member LLCs, nonprofit organizations, foreign entities, special-purpose entities, trusts, estates, and plan administrators also use it when the Internal Revenue Service requires a Taxpayer Identification Number to support tax reporting.
Key Rules or Details for 2015
- Daily EIN limit: The Internal Revenue Service limits one Employer Identification Number (EIN) per responsible party per day, and this restriction applies across all online application, fax, mail, and phone options to prevent duplication. This rule improves security and maintains clear tracking for business entities in the e-file database.
- Legal name accuracy: The name on Form SS-4 must match the legal name of the entity as stated in the formation documents, which prevents delays during electronic Form SS-4 processing. Accurate naming helps the Internal Revenue Service align the application form with tax filings and prevents errors in the confirmation letter.
- Responsible party requirement: The responsible party on Form SS-4 must provide a Social Security number or Individual Taxpayer Identification Number, which verifies control over the business. This information helps the Internal Revenue Service ensure the correct assignment of the federal tax ID number.
- International applicant rules: Non-U.S. individuals and foreign entities are not eligible to use the online EIN application and must instead use the phone, fax, or mail method. This procedure ensures the Internal Revenue Service can verify foreign applicant details without requiring a Social Security number.
Step-by-Step (High Level)
Step 1: Identify your entity type
Review your entity structure, line of business, and purpose for seeking an Employer Identification Number so that the Internal Revenue Service can correctly categorize your application. You also confirm whether your business falls under nonprofit organizations, single-member LLCs, foreign entities, trusts and estates, or other structures.
Step 2: Gather required information
You collect your legal name and entity, mailing address, responsible party details, Taxpayer Identification Number, and business activity information before you begin the application process. This preparation helps you complete the next screen prompts in the online application without delays.
Step 3: Select an application method
You choose between the online application, fax, mail, or phone option based on your location and eligibility for the Online EIN application. You also ensure your information remains consistent across methods to avoid creating multiple Employer Identification Number requests.
Step 4: Submit the application
You complete the required fields marked with the red asterisk and follow the Application for Employer Identification Number instructions until the Internal Revenue Service accepts your form. You then download document copies or save your confirmation letter for business credit, business loans, and licensing requirements.
Common Mistakes and How to Avoid Them
- Incorrect legal name: Many filers mistakenly enter a trade name rather than the legal name of their entity, which leads to processing errors. You can avoid this mistake by using the exact legal name from your formation documents and placing any trade name on the appropriate line.
- Incorrectly listed responsible party: Some applicants list a nominee instead of the true controlling individual, resulting in IRS Form mismatches. You can prevent this problem by identifying the actual responsible party with a valid Taxpayer Identification Number or Individual Taxpayer Identification Number.
- Duplicate EIN requests: Some business owners submit multiple application forms due to processing delays, resulting in unnecessary Employer Identification Numbers. You can avoid this by waiting for your confirmation letter or contacting the Business and Specialty Tax Line for status updates.
- Incorrect entity selection: Selecting the wrong entity structure causes issues in tax reporting and withholding tax requirements. You can prevent this by reviewing your documents and confirming whether you are filing as a sole proprietor, single-member LLC, foreign entity, or nonprofit organization before completing Form SS-4.
What Happens After You File
You receive a confirmation letter containing your Employer Identification Number, the legal name of the entity, and the mailing address once the Internal Revenue Service completes processing.
The letter arrives immediately through the Online EIN application, within a few days by fax, or in several weeks by mail. You then use the Employer Identification Number for Schedule C filings, payroll forms, business licenses, financing for business needs, and other federal tax ID number requirements.
FAQs
What information do I need before completing Form SS-4?
You will need to provide your legal name or entity, the responsible party's information, the Taxpayer Identification Number or Individual Taxpayer Identification Number, mailing address, and details about your business activities.
Can I apply for an EIN without a Social Security number?
Yes, foreign entities and non-U.S. individuals can apply without a Social Security number by using phone, fax, or mail methods and providing acceptable identifying information.
Does a single-member LLC need an Employer Identification Number?
A single-member LLC is required to obtain an Employer Identification Number (EIN) when hiring employees, filing certain IRS Forms, or opening a business bank account.
Can I change the responsible party after receiving an EIN?
Yes, you can update the responsible party information by using the appropriate IRS form and mailing address instructions provided by the Internal Revenue Service.
What if I lose my confirmation letter?
You can request a replacement by contacting the Business and Specialty Tax Line and verifying your legal name or entity and taxpayer identification details.
