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Oklahoma . 2026 filing guide

Oklahoma Secretary of State filings, deadlines, and how to do them right.

Annual reports, business search, registered agent changes, reinstatement, dissolution, tax registration. Every Oklahoma filing explained, plus the business environment, regulatory bodies, and a year-round compliance calendar. Verified against the Oklahoma Secretary of State, Business Filing Department as of June 2026.

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Verified against Oklahoma Secretary of State, Business Filing Department on Jun 12, 2026
Agency
Oklahoma Secretary of State, Business Filing Department
Branded as Oklahoma Business Filing
Phone
405-522-2520
Mon-Fri 8am-5pm CT
Annual due
Anniversary date
$100 penalty
Processing
5-7 business days
Online filings
Oklahoma business environment

Why founders choose Oklahoma (and what to know first)

Low formation fees ($50 Corp / $100 LLC). Low individual income tax. Strong energy and aerospace ecosystem. Reasonable cost of operation.

Economy
~$210B economy
Registered entities
~350,000 active entities
New formations / year
~50,000 annually
Key industries
Energy (oil + gas), aerospace (Tinker Air Force Base, American Airlines hub), agriculture, manufacturing, biosciences
Oklahoma tax profile

Tax obligations at a glance

Tax type Where Oklahoma stands
State income tax0.25% to 4.75%
Corporate income tax4% C-Corp
Sales tax4.5% state + 0-7% local
Franchise taxCorporate Franchise Tax (between $25-$20,000, scaled to capital); LLCs exempt

Tax obligations depend on entity type, where you operate, and where revenue is sourced. Consult a licensed CPA for entity-specific advice. File.Business connects you with vetted CPAs in Oklahoma on request.

Beyond the SoS

Other Oklahoma agencies your business will touch

The Secretary of State handles formation and corporate filings. These agencies handle the rest of your Oklahoma compliance.

Oklahoma Tax Commission
405-521-3160

State income tax, sales tax, corporate tax, Annual Certificate

Oklahoma Employment Security Commission
405-525-1500

Unemployment insurance

Oklahoma Insurance Dept
405-521-2828

Insurance licensing

Oklahoma Workers Compensation Commission
405-522-5800

Workers comp

OK Construction Industries Board
405-521-6550

Contractor licensing

OK Alcoholic Beverage Laws Enforcement
405-521-3484

Alcohol licensing

Oklahoma compliance calendar

Year-round filings every Oklahoma business should know

Recurring federal and state deadlines that affect Oklahoma businesses. Our Compliance Calendar tracks these and 200+ others against your entity.

WhenWhat is due
Anniversary dateOklahoma annual filing deadline
Jan 31W-2 and 1099 deadlines (federal, applies to all state employers)
Mar 15Form 1065 and 1120-S deadline (pass-through entities)
Apr 15Form 1040 + Q1 federal estimated tax
Jun 15Q2 federal estimated tax
Sep 15Q3 federal estimated tax. Extended 1120-S / 1065
Oct 15Extended 1040 / 1120 deadline
Dec 31Year-end. BOI updates due within 30 days of beneficial-owner changes (FinCEN).
View full Oklahoma compliance calendar →
How-to . LLC formation

How to form an LLC in Oklahoma: step by step

Each step explained with what Oklahoma requires. File.Business handles all of this for $0 service fee plus the $100 state fee.

1
Pick a name

Search the state business name database to confirm the name is distinguishable. Must include LLC, L.L.C., or Limited Liability Company.

2
Choose a registered agent

State street address required (no P.O. Box). The agent must accept the appointment and be available during business hours.

3
File the Articles of Organization

Submit to the Secretary of State with the state filing fee. Online filing is the fastest channel.

4
Draft the operating agreement

Not filed with the state but legally important. Defines members, contributions, distributions, and manager rules.

5
Apply for an EIN

IRS Form SS-4. Online if a member has an SSN; mail/fax if all members are non-US.

6
Open a business bank account

Most banks require: Articles, EIN letter, operating agreement, and beneficial-owner ID.

7
Register for state tax accounts

Department of Revenue for sales tax, withholding accounts if hiring employees.

Start your Oklahoma LLC →

Ready to file your Oklahoma paperwork the easy way?

Five minutes per filing. State fee passed through at cost. Audit trail and deadline tracking included.

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Disclosure. File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with the Oklahoma Secretary of State, Business Filing Department or any Secretary of State office. You may file directly with the Oklahoma Secretary of State, Business Filing Department. Information on this page is for general guidance only and is not legal, tax, or accounting advice. Filing fees and deadlines verified against the Oklahoma Secretary of State, Business Filing Department as of June 2026 and may change. For entity-specific guidance, consult a licensed Oklahoma attorney or CPA.

File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with any Secretary of State office. You may file directly with the appropriate state agency. SOC 2 Type II audited. 220,000+ businesses formed since 2017.