The IRS offers several channels for your ein application, but processing speed, eligibility, and practical availability differ significantly for US versus non-US founders.
While the IRS does not charge a fee for issuing EINs, many founders still prefer working with FormYourCorp to avoid SS-4 mistakes, fax complications, or phone difficulties when navigating the process independently.
Each application method requires Form SS-4 containing details that must precisely match your newly formed Wyoming LLC, including your entity name, Wyoming registered agent address, and responsible party information.
When the IRS approves your application, they issue an ein confirmation letter (typically form CP 575) which you must save securely. Banks, Stripe, PayPal, and other platforms will request this document.
Online EIN Application (Fastest for Founders with SSN or ITIN)
The IRS EIN Assistant on the irs website is available only when the responsible party has a valid SSN or ITIN and the principal place of business is in the US or a US territory. Wyoming naturally meets this condition.
When you apply online, the EIN is typically issued ein immediately at the end of your session. The entire online system questionnaire takes about 15–20 minutes to complete.
Key operational details:
Available Monday through Friday, 7:00 a.m. to 10:00 p.m. Eastern Time
Sessions time out after 15 minutes of inactivity, forcing you to restart
Only one EIN per responsible party per day is permitted
The confirmation letter must be downloaded or printed immediately—the IRS will not regenerate it later
FormYourCorp uses this method for eligible founders, shortening turnaround to approximately 1–3 business days from Wyoming formation to EIN issuance.
Fax EIN Application (Standard Route for Non-US Founders)
Founders who cannot provide an SSN or ITIN cannot use the IRS online system. For these clients, FormYourCorp typically files Form SS-4 by fax to the dedicated IRS fax number for international applicants.
Realistic timing expectations:
Standard processing: approximately 7–10 business days
Tax season (December–April): can stretch to 2–3 weeks
Domestic fax number: 855-641-6935
International applications from within US: 855-215-1627
A legible, correctly completed SS-4 form and a clear return fax number or mailing address are critical. Errors or unclear handwriting can trigger manual review and add days or weeks to processing.
FormYourCorp handles the entire preparation and faxing of your SS-4, ensures consistency with your Wyoming LLC data, and monitors for IRS responses. You don’t need access to a US fax line.
For some international applicants, the IRS sends responses by regular mail rather than fax. FormYourCorp accounts for this possibility within its timing estimates.
Mail EIN Application (Slowest and Rarely Recommended)
You can mail Form SS-4 to the IRS at the appropriate address (typically the IRS EIN Operation in Cincinnati, OH, though addresses may vary based on current IRS publications).
Timing guidance for mail applications:
Processing usually takes about four weeks to six weeks
International mail adds unpredictable shipping time
Peak IRS workloads can extend processing beyond two months
Handwritten, incomplete, or inconsistent information on mailed forms frequently causes delays since these applications require manual data entry at the IRS. Even small discrepancies between your mail submission and your Wyoming LLC records can trigger holds.
FormYourCorp generally avoids mail submissions for EINs because they significantly delay bank account opening and payment gateway activation for Wyoming LLC clients.
Mail may be used only in rare edge cases where fax is unavailable or when the IRS explicitly requests mailed documentation to resolve a specific issue.
Phone EIN Application for International Applicants
The IRS offers EIN assignment by phone at +1-267-941-1099 specifically for entities whose principal business is outside the US. This is not a toll free number, and international calling rates apply.
Phone service details:
Available Monday through Friday, 6:00 a.m. to 11:00 p.m. Eastern Time
The IRS agent issues your EIN during the call if all data is accepted
The person calling must be authorized to receive the EIN and able to answer questions about the entity and responsible party
Because FormYourCorp structures Wyoming LLCs as US-based entities and optimizes for privacy and accuracy, fax is usually preferred over phone for non-resident clients.
Language barriers, extended hold times, and time zone differences make the phone option impractical for many founders outside the United States.
