Table of Contents
Use these instructions to complete Form SS-4, Application for Employer Identification Number. Also see Do I Need an EIN? on page 2 of Form SS-4.
Use Form SS-4 to apply for an employer identification number (EIN). An EIN is a nine-digit number (for example, 12-3456789) assigned to sole proprietors, corporations, partnerships, estates, trusts, and other entities for tax filing and reporting purposes. The information you provide on this form will establish your business tax account.


You can apply for an EIN online, by telephone, by fax, or by mail depending on how soon you need to use the EIN. Use only one method for each entity so you do not receive more than one EIN for an entity.


Note.
International applicants must call 215-516-6999.

Call 1-800-829-4933 to verify a number or to ask about the status of an application by mail.
Where to File or Fax
| If your principal business, office or agency, or legal residence in the case of an individual, is located in: | File or fax with the “Internal Revenue Service Center” at: |
|---|---|
| Connecticut, Delaware, District of Columbia, Florida, Georgia, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Vermont, Virginia, West Virginia |
Attn: EIN Operation
Holtsville, NY 11742 Fax-TIN: 631-447-8960 |
| Illinois, Indiana, Kentucky, Michigan |
Attn: EIN Operation
Cincinnati, OH 45999 Fax-TIN: 859-669-5760 |
| Alabama, Alaska, Arizona, Arkansas, California, Colorado, Hawaii, Idaho, Iowa, Kansas, Louisiana, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oklahoma, Oregon, South Dakota, Tennessee, Texas, Utah, Washington, Wisconsin, Wyoming |
Attn: EIN Operation
Philadelphia, PA 19255 Fax-TIN: 859-669-5760 |
| If you have no legal residence, principal place of business, or principal office or agency in any state: |
Attn: EIN Operation
Philadelphia, PA 19255 Fax-TIN: 215-516-1040 |
The following forms and instructions may be useful to filers of Form SS-4.
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Form 990-T, Exempt Organization Business Income Tax Return.
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Instructions for Form 990-T.
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Schedule C (Form 1040), Profit or Loss From Business.
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Schedule F (Form 1040), Profit or Loss From Farming.
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Instructions for Form 1041 and Schedules A, B, D, G, I, J, and K-1, U.S. Income Tax Return for Estates and Trusts.
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Form 1042, Annual Withholding Tax Return for U.S. Source Income of Foreign Persons.
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Instructions for Form 1065, U.S. Return of Partnership Income.
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Instructions for Form 1066, U.S. Real Estate Mortgage Investment Conduit (REMIC) Income Tax Return.
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Instructions for Forms 1120 and 1120-A.
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Form 2553, Election by a Small Business Corporation.
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Form 2848, Power of Attorney and Declaration of Representative.
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Form 8821, Tax Information Authorization.
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Form 8832, Entity Classification Election.
For more information about filing Form SS-4 and related issues, see:
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Pub. 51 (Circular A), Agricultural Employer's Tax Guide;
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Pub. 15 (Circular E), Employer's Tax Guide;
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Pub. 538, Accounting Periods and Methods;
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Pub. 542, Corporations;
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Pub. 557, Tax-Exempt Status for Your Organization;
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Pub. 583, Starting a Business and Keeping Records;
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Pub. 966, The Secure Way to Pay Your Federal Taxes for Business and Individual Taxpayers;
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Pub. 1635, Understanding Your EIN;
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Package 1023, Application for Recognition of Exemption Under Section 501(c)(3) of the Internal Revenue Code; and
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Package 1024, Application for Recognition of Exemption Under Section 501(a).
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