Jump to the results
Formation CalcRun the numbers on LLC formation, agents and foreign registration.

Foreign registration cost calculators + Missouri

3 Best Foreign Registration Services in Missouri (2026): Cost Calculator

The 2026 result for Missouri foreign registration services: Mainstay Filing ($199), Missouri Registered Agent.co ($199) and MO Registered Agent.org ($199), ranked best value first. Missouri charges $105 to register, and the calculator adds $397 to $497 of service fees across three years.
Calculated by the Formation Calc editorial team

Result order: Sorted by a five-term formula where cost is 41% and coverage 27%

Calculator summary

Registration fee owed to the state$105sos.mo.gov {input read October 2026, shown in full}
Year-one band$199State fee not in these
Three-year outputs$397 to $497Three years of provider fees
Government charges, 3 years$105Outside the formula
Break-evenNeverNo service passes another

The Missouri calculations

Reading across: year one, the price after that, then the three-year total. Add Missouri's $105 to whichever result you pick.
1

1. Mainstay Filing: best for one fee wherever you register

Best result
Year-1 input$199
Input for year 2 on$149/yr
Result at year 3$497
$199 on top of Missouri's $105; renewal $149

Mainstay Filing calculates best. A $199 service input that does not vary by state, with first-year agent service included.

Pay $100 above Missouri Registered Agent.co across three years and the repeating filings stop being your concern.

No agent charge in year one; $149 a year follows.

Inputs covered

  • Registration paperwork, filed
  • Registered agent free in year one
  • One fee wherever you register

Adds up well

  • No agent charge in year one
  • The fee does not change by state
  • $199 added to Missouri's fee

Adds up badly

  • Agent renews at $149, $50 above Missouri Registered Agent.co
2

2. Missouri Registered Agent.co: best for a single extra state

One-state service
Year-1 input$199
Input for year 2 on$99/yr
Result at year 3$397
$199 on top of Missouri's $105; renewal $99

Position 2 is Missouri Registered Agent.co: total service fees reach $397 after three years.

Inputs covered

  • Registration paperwork, filed
  • Agent service for the first year

Adds up well

  • $99 a year for the agent after that
  • $199 plus the state fee
  • Year-one agent covered

Adds up badly

  • The home state needs a different agent
3

3. MO Registered Agent.org: best for a nearby provider

One-state service
Year-1 input$199
Input for year 2 on$99/yr
Result at year 3$397
$199 on top of Missouri's $105; renewal $99

Position 3 is MO Registered Agent.org: total service fees reach $397 after three years.

No difference in price from Missouri Registered Agent.co.

Inputs covered

  • Registration paperwork, filed
  • Agent service for the first year

Adds up well

  • $99 a year for the agent after that
  • $199 plus the state fee
  • Year-one agent covered

Adds up badly

  • The home state needs a different agent

Running total by year

RankServiceResult, year 1Result, year 2Result, year 3Result, year 5
1Mainstay Filing$199$348$497$795Open Mainstay FilingPartner link. We may earn money if you buy.
2Missouri Registered Agent.co$199$298$397$595Open Missouri Registered Agent.coPartner link. We may earn money if you buy.
3MO Registered Agent.org$199$298$397$595Open MO Registered Agent.orgPartner link. We may earn money if you buy.
Company prices from November 13, 2026, summed year by year. None of the totals cross in ten years.

Cost calculator

Results for 1 to 5 years. State fees are not an input here because every service owes the same ones.
3 years of fees calculate to Mainstay Filing $497, Missouri Registered Agent.co $397, MO Registered Agent.org $397. Least paid: Missouri Registered Agent.co.

Official state charges

InputAmountSource
Registration charge$105sos.mo.gov {input read October 2026, shown in full}
Three-year state total$105Calculated from the inputs above
State result = filing fee + the two later reports + any minimum tax. Open-ended costs get a mention but no number.

How the result came out

For Missouri, the deciding term was filing work in the price (27% of the formula), where Mainstay Filing came out ahead.

With the LLC in two states, coverage decided it.

How Missouri describes the foreign LLC registration fee and rules

An LLC formed elsewhere registers in Missouri before doing business there. It hands the Application for Registration of a Foreign Limited Liability Company (Form LLC 4) to the Missouri Secretary of State, Corporations Division and pays $105. Attach certificate of good standing/existence from the home state from the past 60 days.

An unregistered LLC can face a bar on starting lawsuits in Missouri (RSMo 347.163.1).

As written: dor.mo.gov {input read October 2026, shown in full}

Without a service

$105 is the lowest this calculation goes, because it holds only state fees. The services above put $397 to $497 on top.

Missouri cost questions

What is the registration fee for a foreign LLC in Missouri?

$105 in state fees, with $199 more for the service in year one.

What do these services calculate to over three years?

$397 to $497 across the services, not counting state fees.

Which form registers the LLC?

Complete Application for Registration of a Foreign Limited Liability Company (Form LLC 4) and deliver it to the Missouri Secretary of State, Corporations Division.

Does the Missouri filing need a document from the home state?

Yes, one less than 60 days old: certificate of good standing/existence from the home state.

What recurring filing follows registration?

Nothing. Foreign LLCs have no recurring report here.

When does one service pass another in total cost?

No break-even within ten years.

Which foreign registration service calculates best for Missouri?

Result one is Mainstay Filing, then Missouri Registered Agent.co, then MO Registered Agent.org.

Input sources

  1. revisor.mo.gov is where the RSMo 347.037 figure was entered from, August 2026.
  2. sos.mo.gov is where the Missouri formation fee: Filing fee figure was entered from, October 2026.
  3. revisor.mo.gov is where the Missouri registered agent statute figure was entered from, October 2026.
  4. sos.mo.gov is where the Missouri Secretary of State, Corporations figure was entered from, October 2026.
  5. sos.mo.gov is where the Form LLC 4, foreign LLC figure was entered from, October 2026.
  6. revisor.mo.gov is where the RSMo 347.153, registration of foreign figure was entered from, October 2026.
  7. revisor.mo.gov is where the RSMo 347.163, transacting business and figure was entered from, October 2026.
  8. dor.mo.gov is where the Missouri Department of Revenue, business figure was entered from, October 2026.
  9. Mainstay Filing Missouri service page, entered November 13, 2026
  10. Missouri Registered Agent.co pricing page, entered November 13, 2026
  11. MO Registered Agent.org pricing page, entered November 13, 2026