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Registered agent cost calculators + Missouri

3 Best Registered Agents in Missouri (2026): Cost Calculator

Calculated for 2026, Missouri registered agents rank Mainstay Filing ($149/yr), Missouri Registered Agent.co ($99/yr) and MO Registered Agent.org ($99/yr), from first to third. Year one calculates to $99 to $149, and three years to $297 to $447.
Calculated by the Formation Calc editorial team

Result order: Best value first, from our five-term calculation

Main figures

Mandatory?Yesrevisor.mo.gov {input read October 2026, shown in full}
Year-1 results$99 to $149A single agent year
Three-year band$297 to $447Three years of provider fees
Break-evenNeverOrder never flips

Missouri results

Ranked by the formula. The agent you name has no bearing on state fees.
1

1. Mainstay Filing: best for the same input in every state

Best value
Year-1 input$149
Renewal input$149/yr
Result at year 3$447
$149 per year, moving to $149

Top result: Mainstay Filing. A steady $149 a year, whatever state is entered.

The $150 premium over Missouri Registered Agent.co at year three buys coverage, and coverage decides the order.

Inputs covered

  • An office address inside the state
  • Up to three government mailings a year, scanned free
  • Covers LLCs, corporations, LPs, LLPs and nonprofits

Adds up well

  • One account for any state
  • $149 yearly, no increase

Adds up badly

  • A yearly difference of $50
  • Report filing needs the formation package
2

2. Missouri Registered Agent.co: best for the smallest yearly bill

Local result
Year-1 input$99
Renewal input$99/yr
Result at year 3$297
$99 per year, moving to $99

Position 2 is Missouri Registered Agent.co: $297 across three years, assuming the company does not move.

Inputs covered

  • An address in the state on record
  • Legal documents posted to your account

Adds up well

  • Undercuts Mainstay Filing every year
  • $99 a year, no change at renewal

Adds up badly

  • No help outside the state
3

3. MO Registered Agent.org: best for a second local option

Local result
Year-1 input$99
Renewal input$99/yr
Result at year 3$297
$99 per year, moving to $99

Position 3 is MO Registered Agent.org: $297 across three years, assuming the company does not move.

No difference in price from Missouri Registered Agent.co.

Inputs covered

  • An address in the state on record
  • Legal documents posted to your account

Adds up well

  • Undercuts Mainstay Filing every year
  • $99 a year, no change at renewal

Adds up badly

  • No help outside the state

What each service adds up to

RankServiceResult, year 1Result, year 2Result, year 3Result, year 5
1Mainstay Filing$149$298$447$745Open Mainstay FilingPartner link. We may earn money if you buy.
2Missouri Registered Agent.co$99$198$297$495Open Missouri Registered Agent.coPartner link. We may earn money if you buy.
3MO Registered Agent.org$99$198$297$495Open MO Registered Agent.orgPartner link. We may earn money if you buy.
Prices entered November 13, 2026. Every column adds a renewal. No service passes another within ten years.

Cost calculator

How long will the company stay open? Enter the years and compare.
Result for 3 years: Mainstay Filing $447, Missouri Registered Agent.co $297, MO Registered Agent.org $297. Least paid: Missouri Registered Agent.co.

Official state charges

InputAmountSource
Formation charge$50sos.mo.gov {input read October 2026, shown in full}
State side, 3 years$50Our sum
Three years of state charges mean one filing, two reports and any yearly minimum tax. Publication and similar costs are noted separately.

What settled the order

Weight 27%: filing work in the price. That term separated the top two.

Missouri Registered Agent.co costs less here, but reach across fifty states weighed more.

The Missouri registered agent rule as the state states it (Missouri Secretary of State)

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

A Missouri resident, or a corporation authorized in Missouri, whose business office is the registered office. Check RSMo 347.030.

The address has to be a physical street address in Missouri. A P.O. box can be listed only together with a street address.

Quoted text: revisor.mo.gov {input read October 2026, shown in full}

Without a service

If you qualify, naming yourself costs no agent fee, and state fees are unchanged. The services above charge $99 to $149 a year for a Missouri address and a person to receive legal papers.

Quick answers

What does a Missouri registered agent charge per year?

$99 to $149 a year across these services.

What do three years of agent service cost?

Year one plus two renewals calculates to $297 to $447.

Is a registered agent a must for a Missouri LLC?

Yes, it does. Every LLC must name a registered agent with an in-state street address.

Can the owner be the registered agent?

Yes, if the eligibility and address rules above are met.

What does the state charge the LLC each year?

Missouri wants no yearly report.

When does one service pass another in total cost?

They hold one order for ten years.

Which registered agent calculates best in Missouri?

Mainstay Filing calculates best, followed by Missouri Registered Agent.co and MO Registered Agent.org.

See also

Input sources

  1. We entered RSMo 347.037 after reading revisor.mo.gov in August 2026.
  2. We entered Missouri formation fee: Filing fee after reading sos.mo.gov in October 2026.
  3. We entered Missouri registered agent statute after reading revisor.mo.gov in October 2026.
  4. Input from Mainstay Filing: Missouri service page (November 13, 2026)
  5. Input from Missouri Registered Agent.co: pricing page (November 13, 2026)
  6. Input from MO Registered Agent.org: pricing page (November 13, 2026)