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How to Start an LLC in South Dakota

Fee, timeline, and tax basics for a South Dakota LLC.

How Is an LLC Taxed in South Dakota?

A South Dakota LLC is not taxed differently than a sole proprietorship by default; profit simply passes through to your personal return. Any savings come later from an S-corp election once your South Dakota LLC is consistently profitable enough to justify the extra payroll work. South Dakota has no state personal income tax, which keeps its overall LLC tax picture simple compared with most states.

South Dakota Filing Fee and Timeline

South Dakota charges $150 to file the Articles of Organization, on the pricier side compared with most other states. Processing time depends on how South Dakota is running that week and whether you file online or mail it in; check the South Dakota Secretary of State site for the current estimate before you plan around it. On the ongoing side, South Dakota charges a moderate recurring fee that is easy to plan around ($50).

Steps to Start an LLC in South Dakota

  1. Check name availability with South Dakota's business filing office before you file anything.
  2. Designate a registered agent with a South Dakota street address, not a P.O. box.
  3. File the Articles of Organization and pay the $150 fee to South Dakota.
  4. Put an operating agreement in writing, even for a single-member South Dakota LLC.
  5. Request a free EIN online from the IRS once your South Dakota LLC is on file.
  6. Open a business bank account so your South Dakota LLC's finances stay separate from your own.

South Dakota LLC Results

Between the $150 filing fee and an optional registered-agent service, most South Dakota LLC owners have a clear first-year number well before they file anything. Use the LLC cost calculator to run your own numbers through the cost calculator for South Dakota, then check the sole proprietor comparison to check if the LLC paperwork is worth it for you.

South Dakota LLC Details

Filing documentArticles of Organization
State filing fee$150
Recurring report fee$50

South Dakota publishes these figures directly; they are current for 2026 but worth double checking before you file, since fees can change.

South Dakota LLC FAQs

How long does it take South Dakota to process an LLC filing?

Processing time depends on South Dakota's current workload and whether you file online or by mail; the South Dakota Secretary of State's site lists current turnaround times, since they change throughout the year.

What happens if I never file an operating agreement in South Dakota?

South Dakota does not require you to file an operating agreement with the state, but skipping one leaves your LLC governed by South Dakota's default LLC statute, which may not match how you actually want to run the business.

How much does it cost to start an LLC in South Dakota?

South Dakota charges $150 to file the Articles of Organization, which is on the pricier side compared with most other states. After that, South Dakota charges a moderate recurring fee that is easy to plan around; use the LLC cost calculator for your full first-year number.

Do I need a lawyer to start an LLC in South Dakota?

No. Most people file the Articles of Organization themselves directly with South Dakota's Secretary of State. A lawyer can help with a custom operating agreement for a South Dakota LLC or a more complex ownership setup, but South Dakota does not require one to form the LLC itself.

Does South Dakota require a separate annual or biennial report fee?

South Dakota charges a moderate recurring fee that is easy to plan around, currently $50 on the recurring schedule the state sets, on top of the original filing fee.

Beyond South Dakota: the 7-step national walkthrough that applies no matter which state you file in. South Dakota's fees are current for 2026; always verify with the South Dakota Secretary of State before you file.
Priya Raman
About the author
Priya Raman

Contributing Writer, Policy & Regulation, Encore Editorial

Priya covers tax, regulation, and compliance: the rules that decide what you can and cannot do, usually filed in an obscure subsection that most people skip. She reads federal register notices in her spare time and is at peace with that being unusual.