How to Get an EIN for Your Wyoming LLC

An EIN is issued by the IRS, not Wyoming. File Form SS-4 online at irs.gov, by phone at (800) 829-4933, or by mail. Online applications receive your EIN immediately. You can apply before or after filing your Wyoming Articles of Organization (Wyo. Stat. § 17-29-201). No fee required.

Apply for Your EIN with the IRS

Online (fastest): Visit irs.gov and complete Form SS-4 electronically. You'll receive your EIN instantly. Have your LLC's legal name, principal business address, and Social Security Number of a responsible party ready.

By phone: Call (800) 829-4933, Monday–Friday, 7 a.m.–7 p.m. your local time. The IRS will issue your EIN during the call.

By mail or fax: Submit Form SS-4 to the IRS. Fax processing takes 4 business days; mail takes up to 2 weeks.

Form Your Wyoming LLC First (Recommended)

File your Articles of Organization with the Wyoming Secretary of State at https://wyobiz.wyo.gov/ or mail to Herschler Building East, Suite 101, 122 W 25th Street, Cheyenne, WY 82002-0020 (Wyo. Stat. § 17-29-203). The $100 filing fee applies. Your LLC name must include a required designator (LLC, Limited Liability Company, LC, etc.). Processing takes up to 15 business days for paper filings; online filing is faster.

You don't need Wyoming approval before applying for an EIN—the IRS accepts applications immediately. However, most business owners form their LLC first, then apply for the EIN.

What You'll Need

LLC's legal name and Wyoming registered office address
Principal business address
Business activity description
Social Security Number or ITIN of a responsible party
Wyoming Articles of Organization filing confirmation (recommended but not required by IRS)

Timeline

Wyoming LLC formation: up to 15 business days (paper) or same-day (online). IRS EIN issuance: immediate (online/phone) to 2 weeks (mail). Plan accordingly if you need the EIN quickly for banking or hiring.

Next Steps

File Articles of Organization with Wyoming Secretary of State
Apply for EIN online at irs.gov (fastest method)
Keep your EIN confirmation letter for tax and banking purposes

This is general information, not legal advice.