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Researched and written by the Launchwise Review editorial team
Launchwise Review

Rankings of registered agents, LLC formation and foreign registration services in all 50 states.

Launch review · South Dakota

South Dakota Registered Agent.co Review (2026)

Researched and written by the Launchwise Review editorial team
For South Dakota registered agent duty, South Dakota Registered Agent.co charges $99 a year, the same $99 at renewal. You get a street address in the state to use as your registered office, and each legal paper served on the company is scanned to your account. Launching a South Dakota LLC through the company is $199 plus the state fee, with your first year of agent service covered. Bringing an outside company into South Dakota costs $199 plus the state fee. The grade in one line: right for a South Dakota-only launch that wants a fixed agent price and will do its own annual report.
Launch grade

South Dakota Registered Agent.co: a fit for a South Dakota-only launches

$99 a year, the same at renewal

Our mark 9.0 out of 10

A no-frills South Dakota agent with one price and no surprise at renewal.

In the price

  • A physical street address in the state on the public record
  • Whatever is served on the company is scanned into your account

Pros

  • $99 a year, with no increase
  • A lower yearly agent price than Mainstay Filing
  • Also sells LLC formation and foreign registration
  • Free first year as your agent when you form the LLC with it

Less good

  • You still have to file the annual report
  • The EIN application costs $99 more
  • Works in South Dakota only; another state needs another agent
Visit South Dakota Registered Agent.coPartner link. We may earn money if you buy.

What the $99 a year gets you

South Dakota Registered Agent.co takes on the South Dakota registered agent job at $99 a year. That includes a registered office address in the state, plus scans of anything served on the company waiting in your account. Renewal does not change it: $99 again.

Launching a South Dakota LLC with South Dakota Registered Agent.co

South Dakota Registered Agent.co files the formation paperwork for $199, plus the state's filing fee. Your first year as registered agent comes with it; after that the agent is $99 a year. An EIN application adds $99, although the IRS issues EINs free.

South Dakota Registered Agent.co will not file the annual report for you. In South Dakota it comes around every year, due due during the entity's anniversary month, and the state bills $55, so keep it on your list.

Bringing an outside company into South Dakota with South Dakota Registered Agent.co

South Dakota Registered Agent.co files the state registration for $199, with South Dakota's $750 fee added. Year one as your registered agent is covered. You bring certificate of Existence.

South Dakota Registered Agent.co next to Mainstay Filing and the rest of the grades

Agent service alone costs $297 over three years with South Dakota Registered Agent.co and $447 with Mainstay Filing, so $150 separates them. Mainstay Filing runs one agent plan that is valid in all fifty states and scans the first three government mailings a year free. The Mainstay Filing package is $199 a year and takes the annual report off your list; the South Dakota Registered Agent.co route totals $397 over three years with the agent but without report filing. SD Registered Agent.org, the other South Dakota agent we grade, charges the same $99 a year, and the two grades sit close together.

Quick answers about South Dakota Registered Agent.co

How much is South Dakota Registered Agent.co?

registered agent duty costs $99 a year and the price stays put at renewal. The LLC formation is $199 plus South Dakota's filing fee.

Does South Dakota Registered Agent.co file my yearly report?

No. The South Dakota annual report is not in its published prices, so it stays on your list.

Is South Dakota Registered Agent.co a smart agent for a South Dakota LLC launch?

It is a reasonable pick if the launch is based in South Dakota and you want one steady agent price. Its average score across our South Dakota pages is 9.0.

What do I get with South Dakota Registered Agent.co?

A registered office address in South Dakota, plus scans of served papers delivered to your account.

Will South Dakota Registered Agent.co register an outside company in South Dakota?

Yes, for $199 with South Dakota's fee on top, and the first year as agent comes along.

More from us

Sources and dates

  1. South Dakota registered agent statute, dated October 2026
  2. South Dakota Secretary of State, Business Services / Corporations Division, dated August 2026
  3. South Dakota Secretary of State, Business Services / Corporations Division, dated August 2026
  4. South Dakota yearly filing: Annual report: fee and how, official source, dated October 2026
  5. South Dakota report due date, dated August 2026
  6. SDCL 47-34A-203, dated August 2026
  7. South Dakota formation fee: Filing fee, official source, dated October 2026
  8. South Dakota formation fee: Filing fee, official source, dated October 2026
  9. South Dakota Secretary of State, business services, dated October 2026
  10. Foreign LLC application for Certificate of Authority, dated October 2026
  11. SDCL 47-34A-1003, transacting business, dated October 2026
  12. SDCL 47-34A-1008, effect of not registering, dated October 2026
  13. SDCL 47-34A-1001 to 47-34A-1009, foreign limited liability companies, dated November 2026
  14. From South Dakota Registered Agent.co: home, pricing and service pages, copied November 12, 2026
  15. From Mainstay Filing: South Dakota service pages, copied November 12, 2026