Form an LLC by State › South Dakota
Cheapest and fastest way to file an LLC in South Dakota (2026)
Filing an LLC in South Dakota costs $150 in state fees. The fastest route listed is expedited paper, +$50 on top of the filing fee ($200 all in). Mainstay Filing, our best overall pick, files it for you and keeps the registered agent.
- Official sources, checked October 20, 2026
Cheapest vs fastest in South Dakota
| Route | What you get | State cost |
|---|---|---|
| Cheapest | Paper 1 to 3 business days; online processed immediately | $150 |
| Fast, no extra fee | Online, immediately | $150 |
| Paid lane | Expedited paper | $200 |
Paid lanes are the filing fee plus the expedite fee. The yearly report is $55 afterwards.
What the South Dakota Secretary of State says
"On average, new paper filings are processed within 1-3 business days. Online filings are processed immediately." Expedited service (paper) $50.
Processing, read October 1, 2026
Mainstay Filing
$199 / year, same at renewal
- LLC formation, prepared and filed
- Registered agent, all year
- EIN application (with an SSN or ITIN)
- Annual report filed every year it is due where the state requires one
- Compliance reminders and stored documents
Price from the Mainstay Filing pricing and FAQ pages, checked October 21, 2026. State fees are passed through at cost and shown before you pay.
Questions
What is the cheapest way to file an LLC in South Dakota?
The cheapest route is the plain filing at $150, with the state’s stated turnaround of paper 1 to 3 business days; online processed immediately.
What is the fastest way to file an LLC in South Dakota?
The fastest route listed is expedited paper, +$50 on top of the filing fee ($200 all in).
How much does it cost to expedite a South Dakota LLC?
The state lists 1 option: expedited paper (+$50).
Sources
- SDCL 47-34A-203 (articles of organization); fee set by SDCL 47-34A-212 (multira state research spine): sdlegislature.gov/Statutes/47-34A-212, checked August 12, 2026
- South Dakota formation fee: Filing fee, official source read 2026-10-01: sdsos.gov/general-information/filing-fees.aspx, checked October 1, 2026
- South Dakota formation fee: Filing fee, official source read 2026-10-01: sdlegislature.gov/api/Statutes/47-34A-212.html, checked October 1, 2026
- South Dakota Secretary of State, Business Services / Corporations Division (multira state research spine): sdsos.gov/docs/business/llc-domestic-annualreport.pdf, checked August 12, 2026
- South Dakota Secretary of State, Business Services / Corporations Division (multira state research spine): sosenterprise.sd.gov/BusinessServices/Business/AnnualReportInstr.aspx, checked August 12, 2026
- South Dakota yearly filing: Annual report: fee and how, official source read 2026-10-01: sdlegislature.gov/api/Statutes/59-11-24.html, checked October 1, 2026
- South Dakota report due date (multira state research spine, due dates verified 714/714): sdlegislature.gov/Statutes/47-34A-211, checked August 12, 2026
- South Dakota registered agent statute (SDCL 59-11-6): sdlegislature.gov/Statutes/59-11-6, checked October 20, 2026
- South Dakota processing (South Dakota Secretary of State, official page read): sdsos.gov/business-services/corporations/contact.aspx, checked October 1, 2026
- South Dakota Secretary of State: sdsos.gov/, checked October 20, 2026