Wyoming Employer Identification
Number
(EIN)

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Rick Mak
• March 20, 2025
2025 LLC Guides:

CONTENTS

Having an employer identification number (EIN) isn’t required if you run a small business and don’t have employees. However, obtaining one in advance can be beneficial, as your business needs may change over time. Additionally, an EIN is often necessary for tasks such as filing tax returns and opening business bank accounts, so it’s best to be prepared.

In this article, we’ll cover everything you need to know about getting a Wyoming EIN.

What's a Wyoming EIN?

A Wyoming EIN is also known as:
EIN form filing

It’s important to note that the EIN is issued by the IRS and serves as a federal identifier for your business. If you need a Wyoming state tax ID number, you must apply through the Wyoming Department of Revenue.

How to Get a Wyoming EIN

Unlike some other business registrations, you do not obtain a Wyoming EIN from the Wyoming Secretary of State. Instead, the IRS issues this number for federal tax purposes.

The process for obtaining an EIN varies depending on your residency status, but it is always free to apply.

US Citizens and Residents

If you’re a US citizen or resident with a Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN), you can easily apply for a Wyoming EIN online.

To apply, visit the EIN assistant on the IRS website. The online service is available Monday through Friday, from 7:00 AM to 10:00 PM Eastern Time. Alternatively, you can download Form SS-4 from the IRS website and submit it via fax or mail, though these methods take longer.

Here’s the required information for the application:

Non-US Citizens

If you’re a non-US citizen and do not have an SSN or ITIN, you must apply for an EIN using Form SS-4. This form can be sent to the IRS via fax or mail. Faxing is the faster option.

For detailed instructions on completing Form SS-4, read our guide.

Wyoming EIN Approval

If you apply online, you will receive your EIN confirmation letter immediately. If you apply via fax, processing can take approximately 2-6 weeks, while mailed applications may take 4-8 weeks.

By securing a Wyoming EIN, you set up your business for financial and operational success. Whether you’re starting a new business or expanding an existing one, having an EIN ensures you’re ready for tax filings, banking, and hiring employees when the time comes.

Wyoming LLC FAQs

Those with more Wyoming EIN questions will want answers. Find them in our FAQs below.
Do I need a Wyoming EIN if I’m a sole proprietor?

If you are a sole proprietor without employees, you may not need an EIN. However, having one can be beneficial for separating personal and business finances.

No, your EIN is for federal tax purposes. To obtain a Wyoming state tax ID number, you must apply through the Wyoming Department of Revenue.

EINs generally cannot be changed. If your business structure changes significantly, you may need to apply for a new EIN.

You can retrieve your EIN by contacting the IRS. Or you can check previous tax filings or business documents where it may have been recorded.

Step-by-Step Guide to
Forming a Wyoming LLC

1. Wyoming Name Search

Learn how to check the availability of your desired LLC name and ensure compliance with Wyoming naming rules.

2. Wyoming Registered Agent

Understand the role of a registered agent and how to choose one for your Wyoming LLC.

3. Wyoming Articles of Organization

Learn what the Articles of Organization are and how this key document officially forms your LLC.

4. Wyoming Operating Agreement

Discover why an Operating Agreement is crucial for defining the structure and management of your LLC.

5. Wyoming EIN Number

Learn how to obtain an Employer Identification Number (EIN) from the IRS for tax and banking purposes.

6. Wyoming Business License

Get information on the required business licenses and permits for operating legally in Wyoming.

7. Wyoming Certificate of Good Standing

Find out how to obtain a Certificate of Good Standing to prove your LLC is compliant and active.