Who needs to fill out Form SS‑4?

Any new corporation, partnership, LLC, or sole proprietorship that requires an Employer Identification Number (EIN) for tax purposes must complete Form SS‑4.

Can I submit Form SS‑4 electronically?

Yes. While the PDF can be mailed or faxed, the IRS also offers an online EIN application for most entities. Use the online portal if you prefer a fully electronic process.

Do I need a signature on the PDF?

A signature is required for all entities except those applying online. In the Formize filler, you can add a digital signature or print and sign the hard copy.

What if I make a mistake after I submit?

If you mail or fax the form, you can submit a corrected Form SS‑4 with a brief explanation. For online submissions, you can request a new EIN using a corrected form.

Is there a fee to obtain an EIN?

No. The IRS provides EINs at no cost. Be wary of third‑party services that charge a fee.

How long does it take to receive the EIN?

If you apply online, you receive the EIN immediately. Mail or fax submissions typically take 4–6 weeks.

Can I use the same EIN for multiple businesses?

No. Each distinct legal entity must have its own EIN. Using an existing EIN for a new partnership can cause tax filing errors.

What information is required for the “Responsible Party”?

The responsible party is the individual who ultimately controls or manages the entity. Provide their name, SSN or ITIN, and contact information.

Company or Partnership Application Form – Fillable PDF

Fill out this form

Need to register a new company, LLC, or partnership with the Internal Revenue Service? The IRS Application for Employer Identification Number (EIN) – Form SS‑4 – is the official fillable PDF used by businesses of all sizes. With Formize’s built‑in PDF filler, you can complete the form directly in your browser, save a copy, and print or submit it without ever opening a separate PDF editor.

What Is This Application Form Used For?

Form SS‑4 is required when you:

Start a new corporation, partnership, or limited liability company.
Apply for an EIN for tax reporting, payroll, or banking purposes.
Need a federal tax identification number for an existing entity that never obtained one.

How to Fill the Form Online with Formize

Instead of downloading the PDF and opening it in a separate editor, simply click the "Fill out this form" button on this page. The Formize PDF Filler app will load in seconds, giving you a clean, user‑friendly interface to complete every field.

Common Mistakes & Tips for a Successful Submission

Incorrect entity type: Choose the exact legal structure (e.g., Partnership, LLC, Corporation).
Missing signatures: The form must be signed by an authorized officer or partner.
Wrong tax year: Use the calendar year the entity begins operations unless you have a fiscal year.
Blank required fields: The filler highlights required fields in red; don’t skip them.

Where to Send the Completed Form

After you finish, you can:

Print and mail the PDF to the IRS address listed in the instructions.
Fax the form to the appropriate IRS fax number.
Submit electronically using the IRS Online EIN Application if you prefer.

Having a correctly completed Form SS‑4 speeds up the EIN issuance and lets you open bank accounts, hire employees, and file taxes without delay.

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FAQ

Who needs to fill out Form SS‑4?
Any new corporation, partnership, LLC, or sole proprietorship that requires an Employer Identification Number (EIN) for tax purposes must complete Form SS‑4.
Can I submit Form SS‑4 electronically?
Yes. While the PDF can be mailed or faxed, the IRS also offers an online EIN application for most entities. Use the online portal if you prefer a fully electronic process.
Do I need a signature on the PDF?
A signature is required for all entities except those applying online. In the Formize filler, you can add a digital signature or print and sign the hard copy.
What if I make a mistake after I submit?
If you mail or fax the form, you can submit a corrected Form SS‑4 with a brief explanation. For online submissions, you can request a new EIN using a corrected form.
Is there a fee to obtain an EIN?
No. The IRS provides EINs at no cost. Be wary of third‑party services that charge a fee.
How long does it take to receive the EIN?
If you apply online, you receive the EIN immediately. Mail or fax submissions typically take 4–6 weeks.
Can I use the same EIN for multiple businesses?
No. Each distinct legal entity must have its own EIN. Using an existing EIN for a new partnership can cause tax filing errors.
What information is required for the “Responsible Party”?
The responsible party is the individual who ultimately controls or manages the entity. Provide their name, SSN or ITIN, and contact information.

HOW TO

How to fill out company partnership application form for free, online in 4 easy steps:

1
Open the Formize filler
Click the bright “Fill out this form” button on this page. The Formize PDF Filler loads instantly in your browser.
2
Complete each field
Enter the required information. Required fields are highlighted in red. Use the toolbar to add checkmarks, dates, or signatures.
3
Save your progress
Press the “Save” icon to download a copy to your computer. You can return later to edit if needed.
4
Print or submit
When finished, click “Print” to produce a hard copy for mailing or faxing, or save the PDF to attach to an email.

ABOUT

Tax forms

company partnership application form is one of Tax forms that are documents used to report income, deductions, and tax liability to the relevant tax authority. These forms are an essential part of the tax filing process and are used to ensure individuals and businesses comply with tax laws and accurately calculate their tax obligations.

The specific tax forms required can vary depending on factors such as an individual's filing status, sources of income, and the country's tax laws. However, here are some common types of tax forms:

Individual Income Tax Forms: These forms, such as the 1040 series in the United States, are used by individuals to report their income, claim deductions and credits, and calculate their tax liability.

Business Tax Forms: Businesses, including sole proprietorships, partnerships, corporations, and self-employed individuals, may have to file various forms to report their income, expenses, and taxes owed. Examples include Schedule C (Profit or Loss from Business) and Form 1120 (U.S. Corporation Income Tax Return).

Employment Tax Forms: Employers are required to report employee wages and withhold and remit payroll taxes. Forms such as W-2 (Wage and Tax Statement) and 941 (Employer's Quarterly Federal Tax Return) are used for this purpose.

Investment and Retirement Account Forms: These forms are used to report investment income, capital gains, and losses, as well as contributions and distributions from retirement accounts. Examples include Form 1099-DIV (Dividends and Distributions) and Form 5498 (IRA Contribution Information).

Estate and Gift Tax Forms: When a person passes away or makes significant gifts, specific forms such as Form 706 (United States Estate (and Generation-Skipping Transfer) Tax Return) and Form 709 (United States Gift (and Generation-Skipping Transfer) Tax Return) are used to report and calculate any applicable estate or gift taxes.

It is important to note that tax laws and forms can change over time, so individuals and businesses should consult the relevant tax authority or seek professional tax advice to ensure compliance with the current requirements.

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