How to Form an LLC in South Dakota (2026)

1. 1Choose a name for your LLC and verify availability by searching the South Dakota Secretary of State business entity database. Your name must include "Limited Liability Company," "LLC," or "L.L.C."
2. 2Appoint a registered agent with a physical street address in South Dakota.
3. 3File Articles of Organization with the South Dakota Secretary of State. The filing fee is $150. Online filing is available.
4. 4Obtain an EIN (Employer Identification Number) from the IRS at no cost.
5. 5Create an operating agreement. Not legally required in South Dakota but strongly recommended.
6. 6Open a business bank account with your Articles of Organization, EIN, and operating agreement.
7. 7Obtain any required state and local business licenses or permits.
8. 8File your first annual report on the anniversary of formation. The fee is $50.

• ✓Obtain an EIN from the IRS (free, apply online at irs.gov)
• ✓Open a dedicated business bank account
• ✓Register for South Dakota state taxes with the Department of Revenue (if applicable — SD has no income tax)
• ✓Get business insurance (general liability at minimum)
• ✓Set up an accounting system to track income and expenses
• ✓Apply for any local business licenses or permits
• ✓File your first annual report ($50) on the anniversary of formation

Your South Dakota LLC name must contain "Limited Liability Company," "LLC," or "L.L.C." Restricted words like "Bank," "Insurance," or "Trust" require additional licensing. The name must be distinguishable from existing business entities in South Dakota.

South Dakota has no state income tax — LLC members keep 100% of their profits after federal taxes. South Dakota does not impose a franchise tax on LLCs. The annual report costs $50. South Dakota is one of only 7 states with no state income tax, making it highly attractive for LLCs.

LLC vs. other structures in South Dakota

South Dakota combines no state income tax with moderate LLC fees ($150 filing, $50/year). South Dakota is also popular for asset protection trusts, which can complement LLC structures. While not as well-known as Wyoming for LLC formation, South Dakota offers similar tax advantages.

• •File an annual report on the anniversary of formation — $50 fee
• •Maintain a registered agent with a physical address in South Dakota at all times
• •Keep your operating agreement current and update it when membership changes
• •File federal tax returns (no state income tax returns required)
• •Renew any local business licenses or permits as required

South Dakota has higher-than-average LLC costs. Weigh the total cost of formation and annual maintenance against your expected revenue before deciding.

In general, you should form your LLC in the state where you physically live and conduct business. Forming in a "tax-friendly" state like Wyoming, Delaware, or Nevada sounds appealing, but if you operate in South Dakota, you will still need to register as a foreign LLC there — paying fees in both states.

An LLC is almost always a better choice than operating as a sole proprietorship because of the personal liability protection it provides. However, if your LLC is highly profitable, you should talk to a CPA about electing S-Corp tax treatment to potentially reduce your self-employment tax burden.

What South Dakota LLC Owners Need to Know

• •South Dakota has no state income tax — LLC members keep all profits after federal tax
• •Annual report is $50 and due on the anniversary of formation
• •South Dakota is popular for asset protection trusts, which can complement LLC structures

Official South Dakota Resources

• South Dakota Secretary of State — Business Services
• South Dakota Business Filing Portal
• SD Filing Fees