How do I form an LLC in South Dakota?

File Articles of Organization with South Dakota Secretary of State, Corporations Division (fee: $150) [§ 47-34A-202]. You also need a registered agent in South Dakota, an EIN from the IRS, and an operating agreement.

What is the difference between an LLC and a corporation?

An LLC offers more flexible management and pass-through taxation. A corporation has a formal board/officer structure and can issue stock. LLCs are typically simpler and less expensive to maintain.

Do I need an operating agreement for my LLC?

While not always legally required in South Dakota, an operating agreement is strongly recommended [§ 47-34A-103]. It defines member roles, profit sharing, and procedures for adding/removing members or dissolving the LLC.

How long does it take to form a business in South Dakota?

Processing times vary. Check with South Dakota Secretary of State, Corporations Division[src:https://sdsos.gov/business-services/|South Dakota SoS] for current processing times and expedited filing options.

What is a registered agent and do I need one?

A registered agent is a person or company designated to receive legal documents on behalf of your business. Every LLC and corporation in South Dakota must maintain a registered agent with a physical address in the state.

Topic guideUpdated 2026-02-27

South Dakota Business Formation — LLC, Corporation & More

How to form an LLC or corporation in South Dakota, filing fees, annual reports, and entity comparison.

Choosing the right business entity is one of the most important decisions you will make. South Dakota recognizes several entity types, each governed by specific statutes §47-34A-202.

LLC Formation

The most popular entity for small businesses. To form an LLC in South Dakota:

Choose a unique name (check availability with South Dakota Secretary of State, Corporations Division)

File Articles of Organization with South Dakota Secretary of State, Corporations Division (fee: $150) §47-34A-202

Designate a Registered agent in South Dakota

Create an Operating Agreement §47-34A-103 (not always required by law, but strongly recommended)

Obtain an EIN from the IRS

Corporation Formation

Choose a unique corporate name

File Articles of Incorporation (fee: $150)^{[South Dakota SoS]}

Appoint directors and officers

Adopt bylaws

Issue stock certificates

Hold initial board meeting and document minutes

Annual/Periodic Filing Requirements

South Dakota LLCs (and foreign LLCs authorized here, except banks organized under 51A-3-1.1) must deliver an annual report to the Secretary of State. The reporting fee is $55, and a company that fails to file on time is subject to a $55 penalty; paper filings currently cost $70 per the Secretary of State fee schedule. Corporations file their own annual report under the business corporation act (currently $55 online, $70 on paper). §47-34A-211; §47-34A-212.

Entity Comparison

	LLC	Corporation	Sole Proprietorship
Liability Protection	Yes	Yes	No
Formation Filing	$150^{[South Dakota SoS]}	$150^{[South Dakota SoS]}	None
Annual Filing	Required	Required	None
Taxation	Pass-through	Double (C) or Pass-through (S)	Personal
Management	Flexible	Board/Officers	Owner

✓An LLC offers the best combination of liability protection and tax flexibility for most small businesses. Consult an attorney or CPA before choosing your entity type.

Prepare for Your Consultation

Quick checklist (Small Business)

Gather these before your first consultation.

Business formation docs

(articles of org., EIN, operating agreement)

Contracts and agreements

(client contracts, vendor agreements, leases)

Licenses and permits

(business license, permits, tax registrations)

General preparation tips only. Specific needs depend on your state and business type.

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