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LLC formation cost calculators + Missouri

3 Best LLC Services in Missouri (2026): Cost Calculator

Missouri LLC formation services, 2026: Missouri Registered Agent.co ($199), Mainstay Filing ($199) and MO Registered Agent.org ($199) are the best value, in that order. After three years the services total $397 to $597, and every result owes Missouri the same $50 filing fee.
Calculated by the Formation Calc editorial team

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

Missouri: key outputs

Formation fee owed to the state$50sos.mo.gov {input read October 2026, shown in full}
Year-one band$199Service side only
Results after 3 years$397 to $597Renewals included
State fees by year three$50Official inputs only
Totals cross atNone in ten yearsRanking steady to year 10

Ranked results

Reading across: year one, the price after that, then the three-year total. Add Missouri's $50 to whichever result you pick.
1

1. Missouri Registered Agent.co: best for the smallest opening result

Best value
Year-1 input$199
Input for year 2 on$99/yr
Result at year 3$397
$199 to form, $99 yearly after

Missouri Registered Agent.co gives the best result in Missouri: the three-year result is $397, because renewal is only $99.

A three-year result under Mainstay Filing's earns the top place.

Inputs covered

  • Formation delivered to the state office
  • Agent service for the first year

Adds up well

  • First agent year included
  • Agent renews at $99
  • $199 to form

Adds up badly

  • EIN application adds $99
2

2. Mainstay Filing: best for formation and agent in one input

Most work covered
Year-1 input$199
Input for year 2 on$199/yr
Result at year 3$597
$199 a year plus the $50 state fee

Position 2 is Mainstay Filing: formation and agent for $199, then $199 at renewal.

Three years cost $200 more here than with Missouri Registered Agent.co.

Inputs covered

  • Articles of organization, filed
  • Registered agent for the full year
  • EIN application prepared
  • No markup on government fees

Adds up well

  • Holds at $199
  • EIN application covered
  • Year two calculates to $199

Adds up badly

  • Renews $100 above Missouri Registered Agent.co
  • Missouri has no report for the bundle to take on
3

3. MO Registered Agent.org: best for a small agent renewal

In-state provider
Year-1 input$199
Input for year 2 on$99/yr
Result at year 3$397
$199 to form, $99 yearly after

Next in the results, MO Registered Agent.org: the three-year result is $397, because renewal is only $99.

Missouri Registered Agent.co publishes identical prices.

Inputs covered

  • Formation delivered to the state office
  • Agent service for the first year

Adds up well

  • Agent renews at $99
  • First agent year included
  • $199 to form

Adds up badly

  • EIN application adds $99

Results over time

RankServiceResult, year 1Result, year 2Result, year 3Result, year 5
1Missouri Registered Agent.co$199$298$397$595Open Missouri Registered Agent.coPartner link. We may earn money if you buy.
2Mainstay Filing$199$398$597$995Open Mainstay FilingPartner 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.
The first-year price plus renewals, using the prices entered November 13, 2026. No break-even appears within ten years.

The calculator

Change the years input to get new results, and add the EIN application as a second input.
Output for 3 years: Missouri Registered Agent.co $397, Mainstay Filing $597, MO Registered Agent.org $397. Smallest result: Missouri Registered Agent.co.

The government inputs, Missouri

InputAmountSource
Formation charge$50sos.mo.gov {input read October 2026, shown in full}
Three-year state total$50Sum of the inputs above
We total only the amounts the state fixes: filing, reports in years two and three, and a minimum tax if there is one. Unpriced costs are described instead.

Why result one is first

Missouri Registered Agent.co did better than Mainstay Filing on calculated three-year cost, a 41% term.

Missouri Registered Agent.co takes the cost term at $397 over three years, and Mainstay Filing would need $200 more.

Count the EIN application and Missouri Registered Agent.co calculates lower from year 2.

How Missouri describes its LLC filing fee and filing requirements

Inputs to form the LLC: the Articles of Organization (Form LLC-1); $50; destination the Missouri Secretary of State. Every LLC must name a registered agent with an in-state street address.

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

Filing it yourself

Do-it-yourself result: $50 paid to the state across three years. A service at $397 to $597 is what avoiding the forms costs.

Common questions

What do LLC formation services cost in Missouri?

Budget $199 plus $50 in state fees.

What do these services calculate to over three years?

Service results after three years: $397 to $597.

How much does Missouri charge to file an LLC?

Input $50 to file, using the Articles of Organization (Form LLC-1).

What does Missouri charge each year after formation?

Reports cost nothing here.

Is the EIN application part of the price?

Missouri Registered Agent.co charges $99 for it, Mainstay Filing covers it and MO Registered Agent.org charges $99 for it.

When does one service pass another in total cost?

The results do not cross in the first ten years.

Which LLC formation service calculates best in Missouri?

Missouri Registered Agent.co, which wins on calculated three-year cost. Mainstay Filing and MO Registered Agent.org follow.

Keep comparing

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. Missouri Registered Agent.co pricing page, entered November 13, 2026
  5. Mainstay Filing Missouri service page, entered November 13, 2026
  6. MO Registered Agent.org pricing page, entered November 13, 2026