納税フォーム
IRS Form SS-4 は、税金に関する情報を関連する税務当局に報告するために使用される文書である納税申告書の 1 つです。納税者の状況や場所によって、連邦税、州税、地方税など、さまざまな種類の納税申告書があります。

Starting a business, forming an LLC, corporation, partnership, or nonprofit? You’ll need an Employer Identification Number (EIN) from the Internal Revenue Service. The IRS Form SS-4 is the official legal form used to request an EIN for any type of legal entity in the United States.
Our fillable PDF version lets you complete the form directly in your browser—no download, no extra software. Simply click the "Fill out this form" button and the Formize PDF Filler app will load, guiding you through every required field.
Key benefits of using the fillable PDF:
Below you’ll find step‑by‑step instructions, common pitfalls to avoid, and resources for additional assistance.
A sole proprietor without employees can use their Social Security Number, but an EIN is required for hiring staff, opening a business bank account, or filing certain tax forms.
Yes. After completing the fillable PDF, you can upload the file through the IRS online EIN application portal or mail it to the address listed in the instructions.
The Formize filler lets you reopen the saved file, edit any field, and re‑save. If you’ve already submitted the EIN request, you’ll need to file an amendment with the IRS.
Absolutely. The PDF follows the official IRS layout, so it works perfectly in Adobe Acrobat, Foxit, or any PDF viewer that supports form fields.
If you apply online, you receive the EIN immediately. For mailed or faxed SS‑4 forms, processing typically takes 4‑6 weeks.
Nonprofits also use Form SS‑4 to obtain an EIN, but they must also file Form 1023 (or 1023‑EZ) for tax‑exempt status.
No. The IRS provides EINs free of charge. Be wary of third‑party services that charge a fee.
No. Each distinct legal entity (LLC, corporation, partnership, etc.) requires its own EIN.
Foreign entities can still apply for an EIN using Form SS‑4. Follow the IRS instructions for foreign applicants and provide a U.S. mailing address or authorized third‑party designee.
The IRS publishes a detailed instruction booklet on the same page as the PDF. You can view it at https://www.irs.gov/instructions/si-ss-4.
IRS Form SS-4 は、税金に関する情報を関連する税務当局に報告するために使用される文書である納税申告書の 1 つです。納税者の状況や場所によって、連邦税、州税、地方税など、さまざまな種類の納税申告書があります。
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