- August 23, 2026
- Posted by: OTIN Editorial Team
- Category: EIN
To apply for an EIN for a new Wyoming LLC, first complete the LLC’s state formation, then submit the federal EIN application to the IRS. The Wyoming Secretary of State Business Division handles LLC formation but does not collect EIN applications. The IRS warns that applying before a legal entity is formed through the state may delay the EIN application.
Eligible applicants can use the IRS online EIN tool. Form SS-4 is available for applications by fax or mail. Before starting, identify the LLC’s responsible party, confirm the number of members, and determine which federal tax-classification entry applies.
Match the process to your LLC’s situation
The correct sequence and application method depend on whether the Wyoming LLC has already been formed, where its principal place of business is located, and who will submit the application.
The Wyoming LLC has not been formed yet
Complete the state filing before applying for the EIN. Wyoming domestic LLC Articles of Organization may be filed through WyoBiz. The Wyoming form states a $100 filing fee. It also states that online filings may be paid by Visa or Mastercard, while paper filings use a check or money order payable to the Wyoming Secretary of State. Because filing instructions and fees can change, verify the current amount and payment directions immediately before submitting the Articles of Organization.
If you are still organizing the entity, review how to start an LLC in Wyoming before moving to the federal application.
The LLC is formed and its principal place of business is in the United States
The IRS online application may be an option when the principal place of business is in the United States or a U.S. territory. To use that method, the applicant must be the responsible party or an authorized representative, and the responsible party must have an SSN or ITIN.
An eligible online applicant can receive the EIN and use it immediately to file a return or make a payment. Applicants in the United States or U.S. territories can obtain an EIN from the IRS free of charge.
The LLC cannot use the online application
Form SS-4 is used for fax and mail applications. Applying by telephone is not an alternative for a typical domestic applicant: telephone applications are limited to applicants without a legal residence, principal place of business, or principal office or agency in the United States or U.S. territories.
If you are comparing federal, state, and other business identifiers, see how to get a tax ID number in Wyoming for a new business.
Information to organize before applying
Prepare the LLC’s information before opening the online tool or filling out Form SS-4. Consistent names, addresses, and ownership details make it easier to review the application before submission.
| Item | What to confirm | Why it matters |
|---|---|---|
| Completed LLC formation | Confirm that the Wyoming LLC has been formed through the state. | The IRS instructs applicants to form a new legal entity before seeking its EIN. |
| Entity type | Identify the applicant as an LLC and distinguish the LLC from another business structure. | The online EIN application requires the business entity type. |
| Responsible party | Identify the individual who ultimately owns or controls the LLC or exercises ultimate effective control. | Except for government entities, the responsible party must be an individual. Form SS-4 generally requires that person’s SSN or ITIN. |
| Member count | Determine whether the LLC has one member or two or more members. | Form SS-4 requires the LLC’s number of members. |
| Federal tax classification | Determine the classification entry that applies rather than relying only on the LLC’s state-law label. | Form SS-4 requests federal tax-classification information. |
| Representative authority | If someone else will apply online, confirm that the person is authorized and has the required documentation. | A third-party designee must have signed authorization to submit the online application. |
| Daily application activity | Check whether the responsible party has already received an EIN that day. | The IRS limits EIN issuance to one EIN per responsible party per day across all application methods. |
Be especially careful with the responsible-party entry. For a nongovernment entity, it is not simply a convenient contact name or the name of an organization providing filing assistance. It must be the individual who ultimately owns or controls the entity or exercises ultimate effective control.
Complete the EIN application in the right order
- Finish the Wyoming LLC formation. Keep the accepted entity name and formation information available so that the federal application can be prepared consistently.
- Select an available application method. Use the online tool only if its eligibility rules are satisfied. Otherwise, prepare Form SS-4 for fax or mail. Do not plan on a domestic telephone application.
- Identify the responsible party. For a nongovernment LLC, enter the individual who ultimately owns or controls the entity or exercises ultimate effective control. Have that person’s SSN or ITIN available when required.
- Enter the LLC information. Use the formed entity’s details, choose the LLC entity type, and provide the requested responsible-party information. For Form SS-4, include the LLC’s member count and federal tax-classification information.
- Review before submission. Compare the entity name, responsible party, member count, and classification entries with the records used to prepare the application. If a third-party designee is applying online, make sure signed authorization is in place.
- Retain the EIN record. Keep the issued number and related confirmation with the LLC’s permanent records. Eligible online applicants may use the EIN immediately to file a return or make a payment.
Federal tax classification deserves a deliberate review. By default, a domestic single-member LLC is disregarded for federal tax purposes, while a domestic LLC with two or more members is treated as a partnership unless another classification is elected. This classification question is separate from the fact that the business was formed as an LLC under Wyoming law.
Avoid common application problems
Applying before the entity exists
Do not reverse the order by requesting the EIN first and forming the Wyoming LLC later. The IRS specifically instructs applicants forming a legal entity to complete state formation first and warns that failing to do so may delay the EIN application.
Choosing an ineligible submission method
Online eligibility is not determined merely by the LLC’s Wyoming formation. The principal place of business must be in the United States or a U.S. territory, the applicant must be the responsible party or an authorized representative, and the responsible party must have an SSN or ITIN. If those online conditions are not met, consider the applicable Form SS-4 method rather than entering inaccurate information.
Naming the wrong responsible party
Use the individual who has ultimate ownership or control, or who exercises ultimate effective control. Avoid substituting a service provider, organizer, or routine contact merely because that person is completing paperwork. A third-party designee applying online must have signed authorization.
Confusing LLC status with federal tax classification
“LLC” identifies the entity type, but Form SS-4 also asks for the number of members and federal tax-classification information. Review those entries together. A one-member LLC and an LLC with multiple members do not have the same default federal treatment.
Submitting multiple applications on the same day
The one-EIN-per-responsible-party-per-day limit applies across online, telephone, fax, and mail methods. Switching methods does not avoid that limit. If the responsible party has already received an EIN that day, do not submit another application expecting a different channel to bypass the restriction.
Final Wyoming LLC and EIN decision checklist
- Has the Wyoming LLC been formed through the state before the EIN application is submitted?
- Does the EIN application use the LLC’s formed name and consistent entity details?
- Is the applicant applying to the IRS rather than sending an EIN request to the Wyoming Secretary of State?
- If using the online tool, is the principal place of business in the United States or a U.S. territory?
- If using the online tool, is the applicant the responsible party or an authorized representative?
- Does the responsible party have an SSN or ITIN for the online application?
- If a third-party designee will apply online, is signed authorization available?
- Has the correct individual been identified as the responsible party based on ultimate ownership or control?
- Has the LLC’s number of members been confirmed?
- Has the federal tax-classification entry been reviewed separately from the Wyoming LLC label?
- Has the responsible party avoided exceeding the one-EIN-per-day issuance limit?
- If online filing is unavailable, has Form SS-4 been prepared for fax or mail rather than relying on a domestic telephone application?
Once each relevant item is resolved, submit the application through the selected IRS method and retain the resulting EIN documentation with the LLC’s formation and tax records.
Frequently Asked Questions
Should I apply for an EIN before forming my Wyoming LLC?
No. The IRS instructs applicants forming an LLC to complete the entity’s state formation before applying for an EIN. Applying before the legal entity is formed may delay the EIN application.
Can I apply for a Wyoming LLC’s EIN through the Secretary of State?
No. The IRS issues EINs. The Wyoming Secretary of State Business Division handles business filings but does not collect EIN applications.
Who should be listed as the responsible party for a Wyoming LLC?
For a nongovernment LLC, the responsible party must be an individual who ultimately owns or controls the entity or exercises ultimate effective control. Form SS-4 generally requires that individual’s SSN or ITIN.
Can every Wyoming LLC apply for an EIN online?
No. The IRS online tool may be used when the principal place of business is in the United States or a U.S. territory, the applicant is the responsible party or an authorized representative, and the responsible party has an SSN or ITIN.
How much does an EIN cost for a Wyoming LLC?
Applicants in the United States or U.S. territories can obtain an EIN from the IRS free of charge. This is separate from any Wyoming LLC formation filing fee.
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