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Find out if you need an employer identification number (EIN). Get one online, free from the IRS. Don’t pay for an EIN.

Information about Form SS-4, Application for Employer Identification Number, including recent updates, related forms, and instructions on how to file. Form SS-4 is used by sole proprietors, corporations, partnerships, estates, trusts, and other entities to apply for an EIN.

Overview of the IDES enrollment process for a U.S. withholding agent (USWA), territory financial institution (TFI), third party preparer or commercial software vendor.

Public inspection files contain limited information regarding accepted offers in compromise such as the taxpayer's name, city/state/ZIP Code, liability amount, and offer terms. View a sample Form 7249, Offer Acceptance Report, to see the information you will receive by requesting a copy of a public inspection file.

Fill-in forms have been included to allow you to enter information and provide you with a cleaner crisper printout for your records and for filing with the IRS.

Requesting publicly traded partnership technical termination relief — Attachment to Article 219212

Review a list of online publications for small businesses.

Search for business topics like employer tax identification number (EIN) information, with the A-Z Index. Search by business type or subject.

Get instructions to electronically submit forms and request push out tracking numbers for audited BBA partnerships and their pass-through partners.

Find out what to do if you become subject to a backup withholding "B" program due to a payee failing to furnish their correct taxpayer identification number.