Ruling
South Dakota Registered Agent.co: 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
What the $99 yearly charge covers
South Dakota Registered Agent.co 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 South Dakota Registered Agent.co
South Dakota Registered Agent.co 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. South Dakota Registered Agent.co does not prepare it, so the owner must.
Registering a foreign company in South Dakota with South Dakota Registered Agent.co
South Dakota Registered Agent.co 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.
South Dakota Registered Agent.co against Mainstay Filing and the other providers
On the agent service alone, South Dakota Registered Agent.co 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 South Dakota Registered Agent.co route totals $397 over three years with the agent but leaves report filing to you. SD Registered Agent.org, 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 South Dakota Registered Agent.co
What does South Dakota Registered Agent.co 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 South Dakota Registered Agent.co?
No. The South Dakota annual report falls outside its published prices, so the owner files it.
Does South Dakota Registered Agent.co 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 South Dakota Registered Agent.co plan include?
A registered office in South Dakota and scans of papers served on the company, posted to your online account.
Does South Dakota Registered Agent.co 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.
The record
- South Dakota registered agent statute, on the record as of October 2026
- South Dakota Secretary of State, Business Services / Corporations Division, on the record as of August 2026
- South Dakota Secretary of State, Business Services / Corporations Division, on the record as of August 2026
- South Dakota yearly filing: Annual report: fee and how, official source, on the record as of October 2026
- South Dakota report due date, on the record as of August 2026
- SDCL 47-34A-203, on the record as of August 2026
- South Dakota formation fee: Filing fee, official source, on the record as of October 2026
- South Dakota formation fee: Filing fee, official source, on the record as of October 2026
- South Dakota Secretary of State, business services, on the record as of October 2026
- Foreign LLC application for Certificate of Authority, on the record as of October 2026
- SDCL 47-34A-1003, transacting business, on the record as of October 2026
- SDCL 47-34A-1008, effect of not registering, on the record as of October 2026
- SDCL 47-34A-1001 to 47-34A-1009, foreign limited liability companies, on the record as of November 2026
- Exhibit: South Dakota Registered Agent.co, home, pricing and service pages, November 12, 2026
- Exhibit: Mainstay Filing, South Dakota service pages, November 12, 2026