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Plain CharterLLC questions, short answers.

Answered simply · Oklahoma

3 Best Registered Agents in Oklahoma (2026), Plainly Answered

Asked who to hire in Oklahoma in 2026, we'd say OK Registered Agent.org ($99 a year), Mainstay Filing ($149 a year) and Oklahoma Registered Agent.co ($99 a year), in that order. Year one is $99 to $149. Three years come to $297 to $447.

By the Plain Charter editorial team ·

Short version

Is it the law?
Yes, required
Called
Registered agent
What a service costs
$99 to $149 each year
Who we'd use
OK Registered Agent.org, Mainstay Filing then Oklahoma Registered Agent.co

Who we'd hire in Oklahoma

Prices come from each company's own pricing. How we choose.
1Top pick

1. OK Registered Agent.org: best for the lowest three-year cost here

First year $99, then $99 a year

OK Registered Agent.org leads our list: its agent service costs $99 a year with a street address on file.

It is the lower three-year cost of the two, which is what we weigh first.

The price covers

  • A physical in-state address
  • Online copies of legal papers

Upsides

  • Beats Mainstay Filing on yearly price
  • Flat $99 a year

What to weigh

  • Oklahoma only
  • The annual certificate stays on your desk
Visit OK Registered Agent.orgPartner link. We may earn money if you buy.
2All fifty states

2. Mainstay Filing: best for owners planning to grow

First year $149, then $149 a year

Pick number 2, Mainstay Filing, makes the list because $149 a year buys an agent here and in any state you add later.

OK Registered Agent.org saves $150 over three years, enough to rank above it.

The price covers

  • An address in the state
  • Three government mailings a year scanned free
  • Covers LLCs, corporations, LPs, LLPs and nonprofits

Upsides

  • Annual price $149, renewal price $149
  • Works in every state

What to weigh

  • Costs $50 more each year
  • Agent service only, no report filing
Visit Mainstay FilingPartner link. We may earn money if you buy.
3Oklahoma specialist

3. Oklahoma Registered Agent.co: best for local service

First year $99, then $99 a year

Oklahoma Registered Agent.co ranks third, because its agent service costs $99 a year with a street address on file.

Its prices match OK Registered Agent.org exactly, so either is a sound choice.

The price covers

  • A physical in-state address
  • Online copies of legal papers

Upsides

  • Flat $99 a year
  • Beats Mainstay Filing on yearly price

What to weigh

  • Oklahoma only
  • The annual certificate stays on your desk
Visit Oklahoma Registered Agent.coPartner link. We may earn money if you buy.

Side-by-side prices

#ProviderFirst-year priceYear two onThree yearsYou get
1OK Registered Agent.org$99$99/yr$297A physical in-state address; online copies of legal papersVisit OK Registered Agent.orgPartner link. We may earn money if you buy.
2Mainstay Filing$149$149/yr$447an address in the state; three government mailings a year scanned free; Covers LLCs, corporations, LPs, LLPs and nonprofitsVisit Mainstay FilingPartner link. We may earn money if you buy.
3Oklahoma Registered Agent.co$99$99/yr$297A physical in-state address; online copies of legal papersVisit Oklahoma Registered Agent.coPartner link. We may earn money if you buy.
Prices as published on November 12, 2026. The state's own fees are listed in the requirements below.

Common questions

Is a registered agent required?

Every LLC must name a registered agent with an in-state street address.

Legal basis: 18 O.S. § 2010. sos.ok.gov, confirmed October 2026

Who is allowed to be the agent?

The LLC itself, an Oklahoma resident, or a corporation, LLC or partnership formed in Oklahoma or qualified there.

Meeting that rule yourself means you can serve without paying anyone.

How much per year?

Our picks charge $99 to $149 a year; three years cost $297 to $447.

Your choice of agent leaves state fees unchanged.

What does the agent actually do?

It gives the LLC an address in Oklahoma for legal papers and government mail.

What matters most is that you hear about every document quickly. More on service of process

What recurs besides the agent?

Mainly the annual certificate, once a year. Fee: $25. Deadline: anniversary date of the filing of the Articles of Organization.

sos.ok.gov, confirmed August 2026

Why this order?

OK Registered Agent.org leads on three-year cost, which weighs 35% in our order.

What we weigh most: three-year cost (35%) and what the price takes off your plate (30%). Three smaller criteria break close calls.

OK Registered Agent.org keeps $150 in your pocket over three years compared with Mainstay Filing.

How we choose

Oklahoma requirements checklist

RequirementDetailSource
Cost to file$100sos.ok.gov, confirmed October 2026
Registered agentYes, requiredsos.ok.gov, confirmed October 2026
Annual certificate$25 every yearsos.ok.gov, confirmed August 2026
Three-year state total$150Sum of the rows
Every amount links to its official source. The three-year line is our own sum of filing, reports and any minimum tax.

Other quick questions

May I name myself?

Yes, provided you fit the state's rule. Many owners still hire a service for privacy.

Which address counts?

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.

Three years in, what has each cost?

OK Registered Agent.org $297, Mainstay Filing $447 and Oklahoma Registered Agent.co $297

What sources do you use?

Official Oklahoma sources for state fees, company price pages for service fees.

Is a service required by law?

It is optional; the state charges the same either way.

Which one should I hire in Oklahoma?

OK Registered Agent.org tops our list because three years cost $297 if the company never leaves Oklahoma; Mainstay Filing and Oklahoma Registered Agent.co come next.

Sources

  1. Oklahoma Secretary of State, Business, August 2026 (sos.ok.gov)
  2. Oklahoma Secretary of State, Business, August 2026 (sos.ok.gov)
  3. Oklahoma report due date, August 2026 (law.justia.com)
  4. 18 O.S. § 2004, August 2026 (sos.ok.gov)
  5. Oklahoma formation fee: Filing fee, October 2026 (sos.ok.gov)
  6. OK Registered Agent.org: pricing page, read November 12, 2026
  7. Mainstay Filing: Oklahoma service page, read November 12, 2026
  8. Oklahoma Registered Agent.co: pricing page, read November 12, 2026