Skip to the schedules
Agent Fee TablesFee schedules for LLC and agent services, itemized.

Foreign registration fee schedules | South Dakota

3 Best Foreign Registration Services in South Dakota (2026): Fee Schedule

For foreign registration services in South Dakota, the 2026 schedules rank Mainstay Filing ($199), South Dakota Registered Agent.co ($199) and SD Registered Agent.org ($199), in that order. South Dakota charges $750 to register, and the services add $397 to $497 in fees over three years.

Prepared by the Agent Fee Tables editorial team ·

Schedules ordered by: Ordered on five measures: charges 39%, duties 31%, three smaller ones after that

The main charges

Filing fee owed to the state$750sdsos.gov {fee list dated October 2026}
Year-one fees$199Before state fees
Three-year range$397 to $497Three years of service fees
Government charges, 3 years$860Not used in the order
Charges meet inNeverOrder holds to year 10

Ranked schedules

Columns give year one, the charge after that and the three-year total. Add South Dakota's $750 to whichever schedule you pick.
1

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

Leads the list

$199 on top of South Dakota's $750; renewal $149

Opening charge
$199
Charge from year two
$149/yr
Charges, three years
$497

Mainstay Filing comes first because South Dakota registration at $199 plus state fees, with year-one agent service paid for.

Three years cost $100 more than South Dakota Registered Agent.co, but the extra duties it covers weigh more in the order.

The agent renews at $149 a year in every state.

Duties the charge covers

  • Registration handled for you
  • Registered agent at no charge in year one
  • A charge that holds across states

Charges in its favor

  • $199 above the state fee
  • All fifty states covered
  • No agent charge in year one

Charges against it

  • $50 more each year for the agent
Check Mainstay FilingPartner link. We may earn money if you buy.
2

2. South Dakota Registered Agent.co: best for one more state, nothing extra

In-state company

$199 on top of South Dakota's $750; renewal $99

Opening charge
$199
Charge from year two
$99/yr
Charges, three years
$397

Position 2 goes to South Dakota Registered Agent.co: service fees reach $397 over three years.

Duties the charge covers

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

Charges in its favor

  • A modest $99 renewal
  • Year-one agent covered
  • Service fee of $199

Charges against it

  • A second provider is needed at home
Check South Dakota Registered Agent.coPartner link. We may earn money if you buy.
3

3. SD Registered Agent.org: best for another in-state registrant

In-state company

$199 on top of South Dakota's $750; renewal $99

Opening charge
$199
Charge from year two
$99/yr
Charges, three years
$397

Position 3 goes to SD Registered Agent.org: service fees reach $397 over three years.

Line for line, it ties South Dakota Registered Agent.co.

Duties the charge covers

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

Charges in its favor

  • Service fee of $199
  • A modest $99 renewal
  • Year-one agent covered

Charges against it

  • A second provider is needed at home
Check SD Registered Agent.orgPartner link. We may earn money if you buy.

Totals at 1, 2, 3 and 5 years

OrderServiceCharges, year 1Charges, year 2Charges, year 3Charges, year 5
1Mainstay Filing$199$348$497$795Check Mainstay FilingPartner link. We may earn money if you buy.
2South Dakota Registered Agent.co$199$298$397$595Check South Dakota Registered Agent.coPartner link. We may earn money if you buy.
3SD Registered Agent.org$199$298$397$595Check SD Registered Agent.orgPartner link. We may earn money if you buy.
Year one plus renewals, using charges from November 13, 2026. Ranked by running total, the order is stable for ten years.

Pick a time span

Running charges for 1 to 5 years. State fees are left out because they are identical across schedules.
Billed over 3 years: Mainstay Filing $497, South Dakota Registered Agent.co $397, SD Registered Agent.org $397. Lowest charges at that point: South Dakota Registered Agent.co.

State fees with sources

LineChargeSource
Cost to register$750sdsos.gov {fee list dated October 2026}
Annual report$55sdlegislature.gov {fee list dated October 2026}
What the state bills by year 3$860Lines added together
To get the state figure, add the filing fee, two later reports and any minimum tax. Open-ended costs get a mention but no number.

The order behind South Dakota

Mainstay Filing did better than South Dakota Registered Agent.co on duties inside the charge, a 31% measure.

Registering here involves at least two states, and one provider for both beat South Dakota Registered Agent.co.

The South Dakota foreign LLC registration fee and rules, in the state's own words

The South Dakota Secretary of State collects $750 and the Application for Certificate of Authority, Foreign Limited Liability Company from out-of-state LLCs active in South Dakota. The filing requires certificate of Existence.

As written: sdlegislature.gov {fee list dated October 2026}

Without a service

$860 is the floor for three years, all of it state fees. Above that floor, services add $397 to $497.

Questions

What does South Dakota charge a foreign LLC to register?

$750 in state fees, before any service charge of $199.

What do these schedules add up to over three years?

Anywhere from $397 to $497 for three years of service.

Which form completes the registration?

Complete Application for Certificate of Authority, Foreign Limited Liability Company and send it to the South Dakota Secretary of State.

Does South Dakota require a document from the home state?

Yes, certificate of Existence.

Which recurring filing comes after registration?

The annual report, which bills $55.

When does one schedule pass another in total charges?

The schedules do not cross in the first ten years.

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

Best value to least: Mainstay Filing, South Dakota Registered Agent.co and SD Registered Agent.org.

Next schedules

Fee sources

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