Foreign LLC Registration, South Dakota (2026): 5 Procedures and the 3 Best Services
Result for 2026: registering an LLC formed elsewhere in South Dakota is best served by Mainstay Filing ($199), South Dakota Registered Agent.co ($199) and SD Registered Agent.org ($199), ranked in that order. Registration involves 5 procedures and a $750 state fee, with $55 due at each later report.
When an out-of-state LLC does business in South Dakota, it first registers as a foreign LLC. The cost of not registering: The LLC's contracts can still be enforced (SDCL 47-34A-1008(b)).
Procedure 2: Order the certificate from the home state
The filing includes certificate of Existence.
TipOrder it last so that it is current at filing.
Procedure3
Procedure 3: Find a registered agent whose address is in South Dakota
Every LLC must name a registered agent with an in-state street address. The address has to be an actual street address or rural route box number in South Dakota, plus a South Dakota mailing address if it differs.
Procedure 4: Prepare the Application for Certificate of Authority, Foreign Limited Liability Company
Send the South Dakota Secretary of State the finished Application for Certificate of Authority, Foreign Limited Liability Company along with the $750 fee.
Specimen: Specimen: sdsos.gov, logged October 2026
Procedure5
Procedure 5: Maintain the registration
Expect the annual report and a fee of $55 (1st of the anniversary month).
South Dakota costs by procedure
What
Payee
Price
Foreign registration
The state
$750
Annual report
The state
$55
Service fees (optional)
The service
$199 for year one
Three years of state fees
The state
$860
Filing fee plus two later reports plus any minimum tax gives the state's three-year total. The specimens below name the page behind each amount.
Why this order
Procedures the price performs decided first place in South Dakota. It carries 28% of the reading, and the remainder comes from measured cost over three years, reading at year two, fit with the state protocol and price legibility.
Because the LLC came from another state and now works in this one, a single provider spanning both measured best.
Common questions
What does South Dakota charge an out-of-state LLC?
$750 at the state office. Expect the services here to charge $199 more.
Which form do I file to register?
The form is the Application for Certificate of Authority, Foreign Limited Liability Company, and the South Dakota Secretary of State takes delivery of it.
Do I need a certificate from my home state?
Yes: certificate of Existence.
What if the LLC does business there without registering?
The LLC's contracts can still be enforced (SDCL 47-34A-1008(b)).
What is due after registering?
Once registered, the LLC owes the annual report, charged at $55 each time.
Which service should handle the registration?
Mainstay Filing, because the South Dakota registration measures $199 plus the state's fee, with the first agent year included. Next: South Dakota Registered Agent.co and SD Registered Agent.org.
South Dakota Secretary of State, Business Services / readings were recorded from sdsos.gov; the last repeat observation was in August 2026.
South Dakota Secretary of State, Business Services / readings were recorded from sosenterprise.sd.gov; the last repeat observation was in August 2026.
South Dakota yearly filing: Annual report: fee and readings were recorded from sdlegislature.gov; the last repeat observation was in October 2026.
South Dakota report due date readings were recorded from sdlegislature.gov; the last repeat observation was in August 2026.
SDCL 47-34A-203 readings were recorded from sdlegislature.gov; the last repeat observation was in August 2026.
South Dakota formation fee: Filing fee, official source readings were recorded from sdsos.gov; the last repeat observation was in October 2026.
South Dakota formation fee: Filing fee, official source readings were recorded from sdlegislature.gov; the last repeat observation was in October 2026.
South Dakota registered agent statute readings were recorded from sdlegislature.gov; the last repeat observation was in October 2026.
South Dakota Secretary of State, business services readings were recorded from sdsos.gov; the last repeat observation was in October 2026.
Foreign LLC application for Certificate of Authority readings were recorded from sdsos.gov; the last repeat observation was in October 2026.
SDCL 47-34A-1003, transacting business readings were recorded from sdlegislature.gov; the last repeat observation was in October 2026.
SDCL 47-34A-1008, effect of not registering readings were recorded from sdlegislature.gov; the last repeat observation was in October 2026.
SDCL 47-34A-1001 to 47-34A-1009, foreign limited liability companies readings were recorded from sdlegislature.gov; the last repeat observation was in November 2026.
South Dakota service page (Mainstay Filing), observed November 13, 2026
pricing page (South Dakota Registered Agent.co), observed November 13, 2026
pricing page (SD Registered Agent.org), observed November 13, 2026