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Formation Rated

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

Entry · South Dakota

SD Registered Agent.org Review (2026)

From the Formation Rated editorial team
Line one for SD Registered Agent.org: $99 a year for South Dakota registered agent service, with the same $99 at renewal. The plan includes an in-state street address for the registered office and online scans of papers served on the company. Line two: forming a South Dakota LLC costs $199 plus the state fee, first year of agent service included. Line three: foreign registration in South Dakota, $199 plus the state fee. Rating note: it suits a South Dakota-only company that wants a fixed agent amount and files its own annual report.
Rating note

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

Annual price $99; renewal price $99

Our score9.2out of 10

A bare-bones South Dakota agent: flat amount, fixed renewal.

What you get

  • An in-state address on the public record
  • Each paper served on the company is scanned into your account

Pros

  • $99 a year, level on renewal
  • A lower yearly line than Mainstay Filing's agent
  • Also sells LLC formation and foreign registration
  • First agent year included when it forms your LLC

Trade-offs

  • Leaves the annual report line to you
  • EIN application is a separate $99 line
  • South Dakota only; other states need their own agent
Visit SD Registered Agent.orgPartner link. We may earn money if you buy.

Line items on the $99 plan

$99 a year makes SD Registered Agent.org the South Dakota registered agent. The company receives an in-state street address as its registered office, and papers served there are scanned and posted to your account. Renewal carries over at $99.

Forming a South Dakota LLC: the SD Registered Agent.org amounts

Formation through SD Registered Agent.org is $199, with South Dakota's filing fee on a separate line. Year one of registered agent service is included; the agent line after that is $99 a year. An EIN application adds $99, though the IRS itself issues EINs free.

South Dakota then expects the annual report every year, due due during the entity's anniversary month, at $55; SD Registered Agent.org leaves that line to you.

Foreign registration in South Dakota: the SD Registered Agent.org amounts

Registering an outside company in South Dakota through SD Registered Agent.org is $199, plus the state's $750. Year one of registered agent service is included. You provide certificate of Existence.

SD Registered Agent.org against Mainstay Filing

Agent service only: $297 over three years at SD Registered Agent.org, $447 at Mainstay Filing, a gap of $150. Mainstay Filing sells a single agent plan that applies in all fifty states and scans the first three government mailings a year free. Mainstay Filing: $199 a year for formation plus the annual report filing. SD Registered Agent.org: $397 over three years for formation and the agent, report filing excluded. South Dakota Registered Agent.co is the other South Dakota agent on the books; it charges the same $99 a year, and the two rate closely.

SD Registered Agent.org: your questions

What are SD Registered Agent.org's amounts?

$99 a year for registered agent service, and the same on renewal. Formation is $199 plus the South Dakota filing fee.

Does SD Registered Agent.org file my yearly report?

No. The South Dakota annual report is outside its published amounts, so it is your filing.

Does SD Registered Agent.org rate well as a registered agent for a South Dakota LLC?

Yes, if the company is staying in South Dakota and wants a level agent amount. Its average score across our South Dakota pages is 9.2.

What does SD Registered Agent.org include?

The South Dakota registered office address, and online scans of papers served on the company.

Does SD Registered Agent.org register outside companies in South Dakota?

Yes, at $199 plus South Dakota's fee, with a year of agent service included.

Keep reading

Source lines

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