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The Formation Desk

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

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SD Registered Agent.org Review (2026)

SD Registered Agent.org puts registered agent service in South Dakota at $99 a year, and the same $99 at renewal. You get an in-state street address for the registered office and online scans of papers served on the company. It will also form a South Dakota LLC for $199 plus the state fee, with the first agent year included. And it handles foreign registration in South Dakota for $199 plus the state fee. The desk's read: a good fit for a South Dakota-only company that wants a fixed agent price and will file its own annual report.
Written by The Formation Desk editorial team
The desk says

SD Registered Agent.org: our read for a South Dakota-only companies

$99/yr, renews at $99

Editorial score 8.6 out of 10

A no-nonsense South Dakota agent: flat price, fixed renewal.

In the price

  • A street address in the state on the public record
  • You get online scans of any papers served on the company

Strengths

  • $99 a year and it holds
  • Cheaper per year than Mainstay Filing for the agent
  • Sells LLC formation and foreign registration too
  • A free first agent year with LLC formation

Cons

  • Does not touch the annual report for you
  • EIN application costs $99 more
  • Covers South Dakota only; other states need another agent
Visit SD Registered Agent.orgPartner link. We may earn money if you buy.

What the $99 plan gets you

$99 a year makes SD Registered Agent.org your South Dakota registered agent. The company gets a registered office at an in-state street address, and papers served there are scanned and sent to your account. It renews at the same $99.

Forming a South Dakota LLC with SD Registered Agent.org

SD Registered Agent.org handles the formation for $199, and South Dakota's filing fee is billed on top. A first year of registered agent service is included, then the agent runs $99 a year. An EIN application costs $99 more, though the IRS gives EINs away free.

Later on, South Dakota wants the annual report every year, with a $55 fee. SD Registered Agent.org will not file it for you.

Bringing an outside company into South Dakota through SD Registered Agent.org

Through SD Registered Agent.org, bringing a company into South Dakota costs $199, with South Dakota's $750 fee on top. A first year of registered agent service is included. You bring certificate of Existence.

SD Registered Agent.org next to Mainstay Filing

Strip it down to the agent and SD Registered Agent.org costs $297 over three years, against $447 at Mainstay Filing, $150 apart. Mainstay Filing runs one agent plan for all fifty states and scans the first three government mailings a year free. Mainstay Filing's formation package is $199 a year and takes care of the annual report; with SD Registered Agent.org the LLC route totals $397 over three years, agent included, report filing not. South Dakota Registered Agent.co is the other South Dakota agent the desk ranks; it charges the same $99 a year, and the two finish close.

SD Registered Agent.org: reader questions

How much is SD Registered Agent.org?

$99 a year for registered agent service, and the price holds on renewal. Forming an LLC is $199 plus the South Dakota filing fee.

Will SD Registered Agent.org send in my yearly report?

No. The South Dakota annual report is not in its prices, so it is yours to send.

Would the desk recommend SD Registered Agent.org as the registered agent for a South Dakota LLC?

Yes, if the company will stay in South Dakota and you want a steady agent price. Its average score across our South Dakota pages is 8.6.

What do you get from SD Registered Agent.org?

A South Dakota registered office address, and scans of what gets served on the company, online.

Can SD Registered Agent.org register an outside company in South Dakota?

Yes, for $199 plus South Dakota's fee, and a year of agent service comes with it.

Read next

Where the numbers came from

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