Internal Revenue Service ยท United States
Form SS-4: Application for Employer Identification Number
Used by employers, sole proprietors, corporations and other entities to apply for an Employer Identification Number (EIN).
What Form SS-4 is for
Form SS-4 applies for an employer identification number, the nine digit number the IRS assigns to employers, sole proprietors, corporations, partnerships, estates, trusts and other entities for filing and reporting. Once issued, a change of responsible party must be reported to the IRS within 60 days using Form 8822-B.
Who uses it
- A new business that needs an employer identification number
- An estate or trust that has to file
- An entity taking on employees for the first time
What the form asks you for
- The legal name of the entity or individual, and a trade name where it differs
- An executor, administrator or care of name where one applies
- Mailing and street addresses, and the county and state of the principal business
- The reason for applying and the responsible party details
Fill Form SS-4 online
Open the official PDF in ScanMyDocz, complete its form fields in your browser, add a signature or a date if the form needs one, and download the finished copy. What you type stays in your browser.
Questions about Form SS-4
Is this the current version of Form SS-4?
This page describes the December 2025 version, checked against the IRS on 2026-09-07. Tax forms change, so confirm the latest version with the IRS before you rely on it.
Can I fill Form SS-4 in ScanMyDocz?
Yes. Choose Fill online to complete its fields in your browser, then download the finished PDF. What you type stays in your browser.
Does ScanMyDocz give tax advice?
No. ScanMyDocz is a document editing and form-filling tool, not a tax advisor. Verify the completed form and current requirements with the relevant authority or a qualified professional.
Related forms
- W-8BEN Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting (Individuals)
- W-8BEN-E Certificate of Status of Beneficial Owner for United States Tax Withholding and Reporting (Entities)
- W-9 Request for Taxpayer Identification Number and Certification
- W-4 Employee's Withholding Certificate
- 1040 U.S. Individual Income Tax Return
- 1099-NEC Nonemployee Compensation
ScanMyDocz provides document editing and form-filling tools. It does not provide tax, legal, or financial advice. Verify the completed form and the current requirements with the relevant authority or a qualified professional.