SOS Business Search

Oklahoma Secretary of State office — contact & fees

Updated August 2026

Quick Answer

The Oklahoma Secretary of State's Corporation Division registers business entities, processes amendments and reinstatements, and administers the public entity database. The Oklahoma City office accepts filings in person, by mail, and online. In-person submissions must arrive by 4:30 p.m. CT for same-business-day processing.

Open Official Oklahoma Secretary of State Portal ↗

Office contact

Address
421 N.W. 13th Street, Suite 210, Oklahoma City, OK 73103
Phone (filings)
(405) 522-2520
In-person filing cutoff
4:30 p.m. Central Time
Online filing portal
sos.ok.gov — Corp Filing
Entity search
sos.ok.gov — Corp Inquiry

Entity formation and filing fees

Oklahoma corporation fees scale by authorized capital — the $50 minimum applies only to the lowest capitalization tier. LLCs pay a flat $100 formation fee regardless of size. Verify the applicable corporation fee tier at sos.ok.gov before filing.

Domestic LLC — Articles of Organization

Fee
$100

Domestic LLC — Annual Certificate

Fee
$25

Domestic For-Profit Corporation — Articles of Incorporation (minimum tier)

Fee
$50

Domestic Nonprofit Corporation — Articles of Incorporation

Fee
$25

Foreign LLC — Application for Registration

Fee
$300

Certificate of Good Standing

Fee
$20

Name Reservation

Fee
$10

Same-day expedited processing

Fee
+$50

UCC filing, notary, and apostille services

Beyond business entity filings, the Secretary of State's office also runs three other public-facing services:

  • UCC search and filing — filed and searched through the Secretary of State's online UCC system; the standard UCC1 filing fee is $20.
  • Notary public commissions — a $50 filing fee for a new 4-year commission ($45 to renew), plus a separately filed $10,000 surety bond.
  • Apostilles and authentications — $25 per apostille ($10 for intercountry adoption documents), or $20 per authentication.

Source: Oklahoma Secretary of State notary and apostille pages (sos.ok.gov).

Key Oklahoma state licensing agencies

Oklahoma Tax Commission

What it covers
Sales tax registration, withholding tax, business tax accounts, Oklahoma Taxpayer Access Point (OkTAP)

Oklahoma Employment Security Commission

What it covers
Unemployment insurance registration, employer accounts, wage reporting

Oklahoma Construction Industries Board

What it covers
Contractor licensing — electrical, mechanical, plumbing, general construction
Website
cib.ok.gov

Frequently Asked Questions

How much does it cost to form an LLC versus a corporation in Oklahoma?

An LLC's Articles of Organization cost a flat $100 regardless of size. Corporation fees scale with authorized capital, starting at a $50 minimum for the lowest tier.

Does Oklahoma require an annual filing for LLCs?

Yes. Oklahoma LLCs file an Annual Certificate for $25.

How much does same-day expedited filing cost in Oklahoma, and what's the cutoff?

Same-day service costs an extra $50 per filing. In-person submissions must reach the Oklahoma City office by 4:30 p.m. Central Time to be processed that day; later filings go through the next business day unless expedited.

Compare Other States

Entity search rules, fees, and offices are set state by state. These are the states closest to Oklahoma — useful if you're comparing how a neighboring state runs the same process.

Arkansas Business & Commercial Services Division Colorado Department of State Kansas Secretary of State Missouri Corporations Unit New Mexico Business Services Division Texas Secretary of State

Helpful Guides

What Is a Registered Agent, and Who Can Be One?

Every LLC and corporation is required to name one — here's what the job actually involves and who's eligible.

Certificate of Good Standing: What It Is and How to Get One

A one-page proof that your LLC or corporation is current with the state — what it's for, what it costs, and how to request one.

How to Dissolve an LLC: The State Filing Process, Step by Step

Closing an LLC the right way means more than just walking away — here's the filing sequence every state expects.

LLC vs. Corporation: Which Structure Fits Your Business?

Both are formed with the same state office — the real differences show up in taxes, ownership, and how much paperwork you're signing up for.

Articles of Incorporation vs. Articles of Organization: What's the Difference?

Both documents create a legal business entity with the state — the difference comes down to which type of entity you're forming.

How Much Does It Cost to Start an LLC? Formation Fees by State

State filing fees for forming an LLC range from under $50 to $500 — see the base cost in your state and how it compares to forming a corporation.

LLC Annual Report Fees and Deadlines by State

Every state has its own rules for keeping an LLC in good standing — see your state's report frequency, fee, and due date at a glance.

Business License Search: What It Covers and How to Check

Registering an entity with the state isn't the same as holding a license to operate it — here's where licenses actually come from.

UCC Filing Search: How to Check for Liens on a Business

Uniform Commercial Code filings show which lenders have a claim on a company's assets — here's how to search them and what the results mean.