How much does an EIN cost in Oklahoma?
Nothing. The IRS issues EINs free of charge, and there is no separate Oklahoma state fee. Apply directly through the IRS online EIN Assistant or on Form SS-4; never pay a third-party service that charges a fee for the number itself.
Quick facts
- Issuer
- Internal Revenue Service (federal) - not an Oklahoma agency
- Cost
- $0 - free directly from the IRS
- Form
- Form SS-4, or the IRS online EIN Assistant
- Timing
- Immediate online; about 4 business days by fax; ~4 weeks by mail
- Required if
- You have employees, or are a partnership, corporation, or multi-member LLC
- Next step
- Register with the Oklahoma Tax Commission for state tax accounts
The same question in every other state
This requirement is set at state level, so the answer changes when you cross a state line. Below is how 36 other states answer the same question, each linked to the page that cites the agency it came from. The full breakdown is on EIN requirements by state.
| State | Answer |
|---|---|
| Alaska | Nothing. The IRS issues an EIN for free to any business, and there is no state charge for the number itself. |
| Florida | Nothing. The IRS issues an EIN free of charge, whether you apply online, by fax, by mail with Form SS-4, or by phone for international applicants. |
| Georgia | Nothing. The IRS issues an EIN free of charge, whether you apply online, by fax, by mail with Form SS-4, or by phone for international applicants. |
| Hawaii | Nothing. The IRS issues EINs free of charge through its online assistant or on Form SS-4, and it warns explicitly that you never have to pay a fee for one. |
| Idaho | Nothing. The IRS issues EINs free of charge. |
| Illinois | Nothing. The IRS issues EINs for free through its online application, or by fax or mail using Form SS-4. |
| Indiana | Nothing. The IRS issues EINs for free. |
| Iowa | Nothing. The IRS issues an EIN for free to any business, and there is no state charge for the number itself. |
| Kansas | Nothing. The IRS issues EINs free of charge to businesses in Kansas and every other state, whether you apply online, by fax, or by mail. |
| Kentucky | Nothing. The IRS issues EINs for free. |
| Louisiana | Nothing. The IRS issues EINs free of charge through its online assistant or on Form SS-4, and warns explicitly that you never have to pay a fee for one. |
| Maine | Nothing. An Employer Identification Number is issued free by the IRS. |
| Maryland | An EIN costs $0. The IRS provides EINs free of charge. |
| Massachusetts | Nothing. The IRS issues EINs for free, and there is no state charge. |
| Michigan | Nothing. The IRS issues EINs for free. |
| Minnesota | Nothing. The IRS issues EINs for free. |
| Missouri | Nothing. The IRS issues EINs free of charge, and there is no separate Missouri EIN. |
| Montana | Nothing. The IRS issues EINs free of charge through its own application, and there is no Montana fee or surcharge. |
| Nebraska | Nothing. The IRS issues EINs for free, and there is no state charge. |
| Nevada | Nothing. The IRS issues Employer Identification Numbers free of charge. |
| New Hampshire | Nothing. The IRS issues EINs for free. |
| New Jersey | Nothing. An EIN is free and is issued only by the IRS. |
| New Mexico | Nothing. The IRS issues EINs for free. |
| New York | Nothing. The IRS issues EINs free of charge. |
| North Carolina | Nothing. The IRS issues Employer Identification Numbers free of charge, online or with Form SS-4. |
| North Dakota | Nothing. The IRS issues EINs for free. |
| Ohio | Nothing. An EIN is free and is issued only by the IRS. |
| Pennsylvania | Nothing. The IRS issues EINs for free. |
| Rhode Island | Nothing. The IRS issues EINs free of charge. |
| South Carolina | Nothing. The IRS issues EINs for free. |
| Tennessee | Nothing. The IRS issues EINs free of charge through its online application and on Form SS-4. |
| Texas | Nothing. The IRS issues EINs free of charge, and the IRS warns against websites that charge for one. |
| Virginia | Nothing. The IRS issues EINs at no charge and warns applicants: "Beware of websites that charge for an EIN. |
| Washington | Nothing. The EIN is issued by the IRS, not by Washington State, and the IRS never charges for it. |
| West Virginia | Nothing. The IRS issues EINs at no charge in every state. |
| Wisconsin | Nothing. The IRS issues EINs free of charge through its online application and on Form SS-4. |
Full context for Oklahoma
This page answers one question. The complete Oklahoma guide -- covering the surrounding requirements, the forms, the agency, and what happens if you get it wrong -- is at How to Get an EIN in Oklahoma (2026).
Sources
- https://www.irs.gov/businesses/small-businesses-self-employed/apply-for-an-employer-identification-number-ein-online
- https://www.irs.gov/forms-pubs/about-form-ss-4
- https://www.irs.gov/businesses/small-businesses-self-employed/do-you-need-an-ein
- https://oklahoma.gov/tax/businesses.html
- https://www.law.cornell.edu/uscode/text/26/6109
LegalGlass provides general information for educational purposes and is not a law firm or a substitute for advice from a licensed attorney or tax professional. Laws and fees change; verify current requirements with the relevant government agency before acting.