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How to Start an LLC in South Dakota
Forming an LLC in South Dakota costs $150 in state filing fees. Here are the five steps, the ongoing costs, and the official links.
1Step 1: Choose your LLC name
Your name must be distinguishable from existing South Dakota entities and include "LLC" or "Limited Liability Company". Search the South Dakota business records before filing.
2Step 2: Appoint a registered agent
You need a registered agent with a physical street address in South Dakota who can accept legal mail during business hours. If you don't live there, or want to keep your home address off public records, use a commercial agent. See our service comparison.
3Step 3: File your formation document
File with the state for $150. Most states accept online filings, which are usually the fastest. Prefer someone else to handle it?
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4Step 4: Write an operating agreement
Most states don't require you to file one, but banks often ask for it, and it protects your liability shield, especially for multi-member LLCs.
5Step 5: Get an EIN from the IRS
An EIN is free from the IRS. Read our EIN guide.
Staying compliant in South Dakota
Annual report $55 online. Due: January 31 (new uniform date from 2027). See the full South Dakota LLC cost breakdown.
FAQ
How much does it cost to start an LLC in South Dakota?
The South Dakota state filing fee is $150. Ongoing: Annual report $55 online.
Do I need a registered agent in South Dakota?
Yes. Every South Dakota LLC must keep a registered agent with a physical address in South Dakota. You can be your own agent if you live there, or hire a commercial registered agent.
When is the South Dakota LLC annual report due?
January 31 (new uniform date from 2027).
Last updated 2026-10-11.