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Formation ClassClass is in session: LLC paperwork, state by state.

Session 3 · Oklahoma

Foreign LLC Registration Class, Oklahoma (2026): 5 Assignments and the 3 Best Services

Today's class on registering an LLC from another state in Oklahoma in 2026 comes with one answer: hire Mainstay Filing ($199), OK Registered Agent.org ($199) and Oklahoma Registered Agent.co ($199), in that order. Oklahoma charges $300 to register a foreign LLC, and 5 assignments explain how.

Taught by the Formation Class faculty

Key facts for this class

What the state charges to register$300Check the textbook page: sos.ok.gov (read October 2026)
Certificate you must attach60 daysHow fresh it has to be
Report fee$25Annual certificate
What the state collects in three years$350Registration and reports
Assignment count5One by one

What this class teaches

  • Whether Oklahoma registration applies to your LLC
  • How the filing gets made
  • What staying registered costs
  • The services at the top of the class

Who we would hire in Oklahoma

The teacher's five criteria are on how we grade, and they decide the order.
Top of the class

1. Mainstay Filing: best for one provider for both states

Service $199, renewal $149 a year

We start with Mainstay Filing; it files the Oklahoma registration for $199 plus the state fee, and the first agent year is free.

Next to OK Registered Agent.org the three-year premium is $100, which the 34% weight on homework done outweighs.

Agent service past the first year is $149 yearly.

Covered by the tuition

  • The registration filing
  • The registered agent costs nothing in year one
  • One fee wherever you register

Strengths

  • $199 on top of Oklahoma's fee
  • No agent fee for year one
  • Any state, one fee

Weak spots

  • Renewal $50 above OK Registered Agent.org's
One-state plan

2. OK Registered Agent.org: best for a small yearly agent fee

Service $199, renewal $99 a year

Our second pick, OK Registered Agent.org: $199 above the state fee to register, then $99 a year.

Covered by the tuition

  • The registration filing
  • One year of agent service is part of the price

Strengths

  • A year of agent service is included
  • $199 to register
  • The agent renews at $99

Weak spots

  • A single-state service
One-state plan

3. Oklahoma Registered Agent.co: best for a small agent renewal

Service $199, renewal $99 a year

Our third pick, Oklahoma Registered Agent.co: $199 above the state fee to register, then $99 a year.

OK Registered Agent.org and this service cost the same.

Covered by the tuition

  • The registration filing
  • One year of agent service is part of the price

Strengths

  • A year of agent service is included
  • The agent renews at $99
  • $199 to register

Weak spots

  • A single-state service

The services compared

#ServiceFirst yearFrom year twoThree-year total
1Mainstay Filing$199$149/yr$497Visit Mainstay FilingPartner link. We may earn money if you buy.
2OK Registered Agent.org$199$99/yr$397Visit OK Registered Agent.orgPartner link. We may earn money if you buy.
3Oklahoma Registered Agent.co$199$99/yr$397Visit Oklahoma Registered Agent.coPartner link. We may earn money if you buy.
Taken from each company's price page on November 13, 2026. None of the rows includes the $300 state fee.

The class, assignment by assignment

  1. Assignment
    1

    See if your LLC must register in Oklahoma

    Vocabulary word: a foreign LLC is one formed in a different state. It registers before it does business in Oklahoma. Ignore the rule and this follows: A claim from an unregistered LLC will not be heard here (18 O.S. 2048(A)). Contracts it has already signed still hold (18 O.S. 2048(B)).

    Textbook page: Check the textbook page: oscn.net (read October 2026)

  2. Assignment
    2

    Collect the document from the home state

    Oklahoma asks for certificate of good standing, existence or fact, dated within 60 days.

    Request it close to the date you plan to file.

  3. Assignment
    3

    Find a registered agent with an address in Oklahoma

    Every LLC must name a registered agent with an in-state street address. The address has to be a street address in Oklahoma, at a business office that is open during regular business hours. P.O. boxes are not accepted.

    Each of the graded services serves as the registered agent.

    Textbook page: Check the textbook page: sos.ok.gov (read October 2026)

  4. Assignment
    4

    Complete, sign and file the Application for Registration (Foreign Limited Liability Company)

    Finish the Application for Registration (Foreign Limited Liability Company) (SOS Form 0081), tuck in $300, and send everything to the Oklahoma Secretary of State, Business Filing Department.

    Textbook page: Check the textbook page: sos.ok.gov (read October 2026)

  5. Assignment
    5

    Handle Oklahoma's recurring filing

    The repeat assignment is the annual certificate, $25, anniversary of the registration date.

Oklahoma costs by assignment

EntryPaid toTotal
Registering the LLCState agency$300
Annual certificateState agency$25
Service, if you hire oneThe provider$199 at the start
Three years of state feesState agency$350
Filing fee plus two later reports plus any minimum tax makes the state's three-year total. The pages listed below show where each figure came from.

Why the list runs this way

On homework the price does (34% of the grade) came out on top, with close behind.

The LLC is active in two states, and reach decided the order.

Oklahoma pop quiz

What is Oklahoma's fee for an out-of-state LLC?

$300 for the filing. The services here charge $199 extra.

Which form do I file to register?

The Application for Registration (Foreign Limited Liability Company) (SOS Form 0081) is the one to track down, and it goes to the Oklahoma Secretary of State, Business Filing Department.

Do I need a certificate from my home state?

Yes: certificate of good standing, existence or fact, issued within 60 days of filing.

What if the LLC does business there without registering?

A claim from an unregistered LLC will not be heard here (18 O.S. 2048(A)). Contracts it has already signed still hold (18 O.S. 2048(B)).

What is due after registering?

Next is the annual certificate at $25.

Which service should handle the registration?

The grade order is Mainstay Filing, OK Registered Agent.org and Oklahoma Registered Agent.co, and Mainstay Filing is first since $199 on top of the state fee in any state, with year one of the agent included.

See also

Textbook pages and extra reading

  1. Study tip for Oklahoma Secretary of State, Business Filing Department: everything above comes from sos.ok.gov, which we reread in August 2026. Open it and follow along.
  2. Study tip for Oklahoma Secretary of State, Business Filing Department: everything above comes from sos.ok.gov, which we reread in August 2026. Open it and follow along.
  3. Study tip for Oklahoma report due date: everything above comes from law.justia.com, which we reread in August 2026. Open it and follow along.
  4. Study tip for 18 O.S. § 2004: everything above comes from sos.ok.gov, which we reread in August 2026. Open it and follow along.
  5. Study tip for Oklahoma formation fee: Filing fee, official source: everything above comes from sos.ok.gov, which we reread in October 2026. Open it and follow along.
  6. Study tip for Procedures for registering a foreign LLC: everything above comes from sos.ok.gov, which we reread in October 2026. Open it and follow along.
  7. Study tip for 18 O.S. § 2049, transacting business: everything above comes from oscn.net, which we reread in October 2026. Open it and follow along.
  8. Study tip for Oklahoma Statutes Title 18, foreign LLC necessity of: everything above comes from oklegislature.gov, which we reread in November 2026. Open it and follow along.
  9. The Oklahoma service page at Mainstay Filing, November 13, 2026
  10. The pricing page at OK Registered Agent.org, November 13, 2026
  11. The pricing page at Oklahoma Registered Agent.co, November 13, 2026