Form a Business in South Dakota
Filing fees, deadlines, registered agent rules, and tax structure for South Dakota, verified against the South Dakota Secretary of State Monae L on Jun 11, 2026.
South Dakota at a glance
LLC Formation
$150
Corp Formation
$150
Nonprofit Formation
$30
Annual Report: LLC
$50
Annual Report: Corp
$50
Registered Agent
Street address
What makes South Dakota different
- South Dakota is a ZERO INCOME TAX STATE no personal income tax, no corp income tax. One of strongest tax positions in US.
- LLC formation $150 online / $165 paper ($15 paper processing fee).
- AR fee: $50 online / $65 paper Due first day of anniversary MONTH every year.
- $50 LATE FEE per delinquent AR.
- NO Corp income tax NO personal income tax. ONLY bank franchise tax for financial institutions.
- Sales Tax 4.2% state + local up to 2% = combined 4.2-6.2% (one of lowest US base rates).
- Series LLC PERMITTED under SDCL § 47-34A-208.
- No publication requirement.
South Dakota tax structure
no state personal income tax, no corporate income tax, sales tax 4.2%.
For detailed tax planning, see the South Dakota Secretary of State Monae L and the South Dakota Department of Revenue. File.Business is not a tax preparer, consult a CPA for personalized advice.
Ready to file in South Dakota?
We handle Articles of Organization, registered agent service, annual report monitoring, and ongoing compliance, backed by our canonical South Dakota ruleset (re-verified quarterly against South Dakota Secretary of State Monae L).
Filing portal: https://sosenterprise.sd.gov/
At a glance
- What is it
- Form a business in south dakota is a regulated business process governed by federal or state agencies. File.Business handles the paperwork, filings, and tracking for you.
- Why it matters
- Doing this correctly the first time avoids penalties, late fees, and personal liability exposure for owners.
- Who needs it
- Any US business that has triggered the relevant requirement - usually based on entity type, state, or business activity.
- When it is due
- Deadlines vary by agency and state. We track your specific dates and remind you ahead of any filing window.
- How it works
- Tell us what you need, review the prepared filing, and we submit through the agency's official channel.
- What it costs
- Pricing is shown on this page with state and federal fees disclosed separately from our service fee.
- Risks of skipping
- Penalties, administrative dissolution, loss of liability shield, blocked transactions, or audit triggers depending on the filing.
- Alternatives
- File directly with the agency yourself, hire a law firm, or use a competing service. File.Business is the fastest premium option.