Skip to content
The Startup JudgeRankings of registered agents, LLC formation and foreign registration services in all 50 states.

Ruling · South Dakota

SD Registered Agent.org Review (2026)

SD Registered Agent.org offers South Dakota registered agent service at $99 a year, the same $99 at renewal. The plan provides a street address in the state for the registered office, and legal papers served on the company are scanned to an online account. It will also form a South Dakota LLC for $199 plus the state fee, with the first year of agent service included. It registers out-of-state companies in South Dakota for $199 plus the state fee. The finding: sound for a South Dakota-only company that wants a fixed agent charge and is prepared to file its own annual report.
The Startup Judge editorial team
Ruling

SD Registered Agent.org: the ruling for a South Dakota-only businesses

$99 per year, flat

Score9.1out of 10

A plain South Dakota agent with a fixed charge and no step-up at renewal.

In the price

  • A physical address in the state for the registered office
  • Papers served on the company are scanned and uploaded to your account

Why pick it

  • $99 a year, unchanged
  • A lower yearly agent charge than Mainstay Filing's
  • Also provides LLC formation and foreign registration
  • Year-one agent service is free with LLC formation

Weak spots

  • The annual report remains your job
  • The EIN application is an additional $99
  • Limited to South Dakota; other states need another agent
Visit SD Registered Agent.orgPartner link. We may earn money if you buy.

What the $99 yearly charge covers

SD Registered Agent.org acts as the South Dakota registered agent for $99 a year. The company receives a street address in the state for its registered office, and papers served on it are scanned to an online account. Renewal leaves the charge at $99.

Forming a South Dakota LLC through SD Registered Agent.org

SD Registered Agent.org files the formation document for $199; the state's filing fee is billed separately. Year one as your registered agent is included, and the agent is $99 a year after that. The EIN application is $99 extra, though the IRS issues the number at no cost.

South Dakota requires the annual report every year, due due during the entity's anniversary month with a $55 state fee. SD Registered Agent.org does not prepare it, so the owner must.

Registering a foreign company in South Dakota with SD Registered Agent.org

SD Registered Agent.org prepares the state registration for $199, and South Dakota adds a $750 fee. The first year as registered agent is included. The owner supplies certificate of Existence.

SD Registered Agent.org against Mainstay Filing and the other providers

On the agent service alone, SD Registered Agent.org totals $297 across three years against $447 for Mainstay Filing, a margin of $150. Mainstay Filing offers one agent plan that applies in every state and scans the first three government mailings a year free. Mainstay Filing's package is $199 a year and includes the annual report; the SD Registered Agent.org route totals $397 over three years with the agent but leaves report filing to you. South Dakota Registered Agent.co, the other South Dakota agent heard on this site, charges the same $99 a year, and the two finish near each other.

Questions on the ruling for SD Registered Agent.org

What does SD Registered Agent.org charge?

Service as registered agent costs $99 a year and the price holds at renewal. Forming an LLC costs $199 plus South Dakota's filing fee.

Is the annual report filed by SD Registered Agent.org?

No. The South Dakota annual report falls outside its published prices, so the owner files it.

Does SD Registered Agent.org suit a South Dakota LLC as a registered agent?

It is, for a business located in South Dakota that values a fixed agent charge. Its average score across our South Dakota pages is 9.1.

What does the SD Registered Agent.org plan include?

A registered office in South Dakota and scans of papers served on the company, posted to your online account.

Does SD Registered Agent.org handle foreign registration in South Dakota?

Yes. It prepares the registration at $199 with South Dakota's fee on top, and the first year as agent is part of the charge.

See also

South Dakota: the ruling on registered agentsSouth Dakota: the ruling on LLC servicesSouth Dakota: the ruling on foreign registration servicesThe ruling on South Dakota Registered Agent.coMainstay Filing review

The record

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