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What foreign registration costs by state / South Dakota

3 Best Foreign Registration Services in South Dakota (2026): What You Pay

For 2026, we would price out South Dakota Registered Agent.co ($199), Mainstay Filing ($199) and SD Registered Agent.org ($199), in that order, before any other South Dakota foreign registration services. You will pay South Dakota $750 to register, then $397 to $497 to a service over three years.
Written by the Price Your LLC editorial team

↓ Ranked for you by: Best value for you comes first, using our five-part ranking

Your South Dakota budget

What the state charges you to register $750 sdsos.gov (we looked on October 2026, so you can too)
What year one costs you $199 Service fees only
Your three-year spend $397 to $497 Opening year plus two more
What the state collects in 3 years $860 Official amounts only
Prices swap in Bills stay apart Order never flips

Ranked for you

Read across for year one, the price after that and your three-year total. Add South Dakota's $750 to whichever option you pick.

1
Best value for you

1. South Dakota Registered Agent.co: best for a low registration bill

$199 plus the state's fee, then $99 yearly
You pay in year 1 $199
You pay after year 1 $99/yr
You pay over 3 years $397

Start with South Dakota Registered Agent.co. You pay $199 on top of the state fee and get a first agent year with it, then $99 each year.

On the heaviest factor, what you spend over three years, it beats Mainstay Filing.

Your price covers

  • Registration delivered to the state office
  • Agent service for your first year

What you get

  • $99 a year for the agent after that
  • Agent included to start
  • $199 for the registration

What to watch

  • South Dakota only, so the home state needs its own agent
2
Nationwide

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

$199 plus the state's fee, then $149 yearly
You pay in year 1 $199
You pay after year 1 $149/yr
You pay over 3 years $497

Option 2 is Mainstay Filing. A $199 service fee that does not change by state, with first-year agent service included.

By year three it costs $100 more than South Dakota Registered Agent.co.

Agent renewal, any state: $149 yearly.

Your price covers

  • Registration paperwork, filed
  • Registered agent costs you nothing in year one
  • One fee wherever you register

What you get

  • Agent free for the first year
  • Helpful if another state follows
  • $199 plus the state's fee

What to watch

  • $50 more each year for the agent
3
South Dakota focus

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

$199 plus the state's fee, then $99 yearly
You pay in year 1 $199
You pay after year 1 $99/yr
You pay over 3 years $397

Spot 3 goes to SD Registered Agent.org: you pay $199 on top of the state fee and get a first agent year with it, then $99 each year.

No price gap from South Dakota Registered Agent.co.

Your price covers

  • Registration delivered to the state office
  • Agent service for your first year

What you get

  • $199 for the registration
  • $99 a year for the agent after that
  • Agent included to start

What to watch

  • South Dakota only, so the home state needs its own agent

What you pay by year

Pick Service You pay in year 1 You pay by year 2 You pay by year 3 You pay by year 5
1 South Dakota Registered Agent.co $199 $298 $397 $595 Price out South Dakota Registered Agent.co Partner link. We may earn money if you buy.
2 Mainstay Filing $199 $348 $497 $795 Price out Mainstay Filing Partner link. We may earn money if you buy.
3 SD Registered Agent.org $199 $298 $397 $595 Price out SD Registered Agent.org Partner link. We may earn money if you buy.

Year one plus renewals, using prices from November 13, 2026. No service overtakes another within ten years.

Cost calculator

Change the years and see what you would pay.

You would pay South Dakota Registered Agent.co $397, Mainstay Filing $497, SD Registered Agent.org $397 over 3 years. The best total here is South Dakota Registered Agent.co.

The government side of your South Dakota budget

What you pay for Amount Source
Registration filing $750 sdsos.gov (we looked on October 2026, so you can too)
Annual report $55 sdlegislature.gov (we looked on October 2026, so you can too)
State fees summed, years 1 to 3 $860 Filing, reports and any tax

To find what you owe the state across three years, add the filing fee, two later reports and any minimum tax. We mention open-ended costs without putting a number on them.

Notes on the order

South Dakota Registered Agent.co wins your three-year spend, worth 38%, with Mainstay Filing close behind.

South Dakota Registered Agent.co costs you $397 by year three, $100 less than Mainstay Filing.

What South Dakota charges you to register a foreign LLC and what it requires

What you need to register: the Application for Certificate of Authority, Foreign Limited Liability Company, the South Dakota Secretary of State, $750. It also asks for certificate of Existence.

Straight from the source: sdlegislature.gov (we looked on October 2026, so you can too)

If you skip the service

If you file everything yourself, all you pay is the state: $860 over three years. A service piles $397 to $497 on top for the paperwork.

Quick answers

How much will it cost me to register my LLC in South Dakota?

$750 at the state office, while our picks add $199.

What will these services cost me over three years?

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

Which form do I file to register?

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

Do I need a document from my home state to register in South Dakota?

Yes, namely certificate of Existence.

What do I file after I register?

You file the annual report next, and it costs $55.

When does one service end up costing more than another?

They keep one order for ten years.

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

South Dakota Registered Agent.co is first for you, with Mainstay Filing and SD Registered Agent.org after it.

Keep budgeting

What foreign registration costs by state for all 50 states Best foreign registration services for anyone How we rank your options

Where we looked

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