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Foreign registration price tables - South Dakota

3 Best Foreign Registration Services in South Dakota (2026): Price Table

Reading down the 2026 South Dakota table, the order is Mainstay Filing ($199), SD Registered Agent.org ($199) and South Dakota Registered Agent.co ($199). Registering in South Dakota carries a $750 state fee, and service charges add $397 to $497 over three years.

Compiled by the LLC Price Tables editorial team ·

Table order: Sorted by three-year cost (40%) and filing work covered (30%), then renewal gap, crossover year and cell clarity. Table method

South Dakota: the main figures

  • State registration charge$750sdsos.gov [read October 2026, table note]
  • Price band, year one$199Provider charges alone
  • Three-year cells$397 to $497First year and both renewals
  • State side through year 3$860Equal in every entry
  • CrossoverNone within ten yearsNo entry passes another

Ranked entries

Columns give year one, the price after that and the three-year total. Add South Dakota's $750 to whichever entry you pick.

  1. 1. Mainstay Filing: best for the same cost in each state

    Top of the table
    • Year-1 cell$199
    • Cell for later years$149/yr
    • Three-year cell$497

    $199 to register, $149 yearly after

    For South Dakota, Mainstay Filing is the best value because $199 for the filing, nothing for the agent at first, and no change in price from state to state.

    The $100 difference from SD Registered Agent.org at year three buys coverage, and coverage settles the order.

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

    Price buys

    • Registration delivered to the state office
    • Registered agent costs nothing in year one
    • The same fee in each state

    In its favor

    • $199 added to South Dakota's fee
    • First-year agent service included
    • One price in every state

    Against it

    • $50 more each year for the agent
    See Mainstay FilingPartner link. We may earn money if you buy.

  2. 2. SD Registered Agent.org: best for a basic registration

    Local entry
    • Year-1 cell$199
    • Cell for later years$99/yr
    • Three-year cell$397

    $199 to register, $99 yearly after

    Place 2 belongs to SD Registered Agent.org: $199 to register and a year of agent service, then $99 yearly.

    Price buys

    • The South Dakota registration filing
    • Agent service for the first year

    In its favor

    • Agent service at no cost in year one
    • $199 plus the state fee
    • $99 yearly from year two

    Against it

    • Nothing outside this state
    See SD Registered Agent.orgPartner link. We may earn money if you buy.

  3. 3. South Dakota Registered Agent.co: best for one extra state

    Local entry
    • Year-1 cell$199
    • Cell for later years$99/yr
    • Three-year cell$397

    $199 to register, $99 yearly after

    Place 3 belongs to South Dakota Registered Agent.co: $199 to register and a year of agent service, then $99 yearly.

    SD Registered Agent.org lists identical prices.

    Price buys

    • The South Dakota registration filing
    • Agent service for the first year

    In its favor

    • $199 plus the state fee
    • $99 yearly from year two
    • Agent service at no cost in year one

    Against it

    • Nothing outside this state
    See South Dakota Registered Agent.coPartner link. We may earn money if you buy.

What each entry adds up to

No.EntryYear 1 cellYear 2 cellYear 3 cellYear 5 cell
1Mainstay Filing$199$348$497$795See Mainstay FilingPartner link. We may earn money if you buy.
2SD Registered Agent.org$199$298$397$595See SD Registered Agent.orgPartner link. We may earn money if you buy.
3South Dakota Registered Agent.co$199$298$397$595See South Dakota Registered Agent.coPartner link. We may earn money if you buy.
Year one plus renewals, using prices read November 13, 2026. None of the entries swap places in ten years.

Table calculator

How many years will the company run? Set them and compare.
Cumulative for 3 years: Mainstay Filing $497, SD Registered Agent.org $397, South Dakota Registered Agent.co $397. Smallest total: SD Registered Agent.org.

South Dakota fee list

ChargeCellSource
Registration charge$750sdsos.gov [read October 2026, table note]
Annual report$55sdlegislature.gov [read October 2026, table note]
State fees over three years$860Our sum
Reading down this table, add the filing fee to the two later reports and any minimum tax to get the three-year state figure. Open-ended costs are mentioned but never counted.

How the sort came out

Filing work per row put Mainstay Filing first. That column is 30% of the sort, and three-year row total, renewal gap, row crossover and cell clarity make up the remainder.

A foreign LLC already spans two states, so a provider that covers both ranked first.

South Dakota foreign LLC registration fee and rules, quoted from the official source

An LLC formed elsewhere registers in South Dakota before doing business there. The paperwork is the Application for Certificate of Authority, Foreign Limited Liability Company, handed to the South Dakota Secretary of State with $750. Include certificate of Existence.

Cited at: sdlegislature.gov [read October 2026, table note]

State fees only

With no service, South Dakota still bills $860 over three years and every form lands on your desk. Services charge $397 to $497 to lift that work.

South Dakota price questions

What does registering a foreign LLC in South Dakota cost?

$750 paid to the state, before a service fee of $199.

What do these entries add up to over three years?

Between $397 to $497 for three years of service.

Which form carries out the registration?

Use Application for Certificate of Authority, Foreign Limited Liability Company, lodged with the South Dakota Secretary of State.

Must a document from the home state accompany the South Dakota filing?

Yes: certificate of Existence.

Which recurring filing follows registration?

It is the annual report, charged at $55.

When does one entry pass another in total cost?

No swap in ten years; no entry passes another.

Which foreign registration service is the best value for South Dakota?

By the five-column test the South Dakota order is Mainstay Filing, SD Registered Agent.org and South Dakota Registered Agent.co, led by Mainstay Filing on filing work per row.

Keep comparing

Where this came from

  1. Figure for South Dakota Secretary of State confirmed at sdsos.gov during August 2026.
  2. Figure for South Dakota Secretary of State confirmed at sosenterprise.sd.gov during August 2026.
  3. Figure for South Dakota yearly filing: Annual confirmed at sdlegislature.gov during October 2026.
  4. Figure for South Dakota report due date confirmed at sdlegislature.gov during August 2026.
  5. Figure for SDCL 47-34A-203 confirmed at sdlegislature.gov during August 2026.
  6. Figure for South Dakota formation fee: Filing confirmed at sdsos.gov during October 2026.
  7. Figure for South Dakota formation fee: Filing confirmed at sdlegislature.gov during October 2026.
  8. Figure for South Dakota registered agent statute confirmed at sdlegislature.gov during October 2026.
  9. Figure for South Dakota Secretary of State confirmed at sdsos.gov during October 2026.
  10. Figure for Foreign LLC application for Certificate confirmed at sdsos.gov during October 2026.
  11. Figure for SDCL 47-34A-1003, transacting business confirmed at sdlegislature.gov during October 2026.
  12. Figure for SDCL 47-34A-1008, effect of not confirmed at sdlegislature.gov during October 2026.
  13. Figure for SDCL 47-34A-1001 to 47-34A-1009, foreign confirmed at sdlegislature.gov during November 2026.
  14. Price cells copied from Mainstay Filing South Dakota service page, November 13, 2026
  15. Price cells copied from SD Registered Agent.org pricing page, November 13, 2026
  16. Price cells copied from South Dakota Registered Agent.co pricing page, November 13, 2026