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FAQ · Straight answers to the questions South Dakota LP owners ask most.

South Dakota Limited Partnership FAQ

Straight answers to the questions people actually ask when forming and running a limited partnership in South Dakota — covering the structure, the filing, registered agents, taxes, ongoing obligations, and how an LP differs from the other entity types you might be weighing.

One price: $199.00/yr covers your formation, your registered agent, and your annual report, plus the $125.00 state filing fee, at cost.

Form Your South Dakota LP ($199.00/yr All-In)

✓ No hidden fees  ✓ No second-year price hikes  ✓ No missed filings

State facts

South Dakota LP

State filing fee$125.00
Annual report fee$0.00
Annual report dueNone
Std. processingSame day

The Basics of a South Dakota LP

What exactly is a limited partnership?

A limited partnership is a business with two kinds of owners. General partners run the operation and are personally liable for its debts. Limited partners contribute capital, share in profits, and are shielded from liability beyond their investment — as long as they stay out of management. Every South Dakota LP needs at least one of each. The entity is created by filing a Certificate of Limited Partnership with the Secretary of State.

Why would I choose an LP over an LLC?

An LLC protects everyone and requires no one to accept personal liability, which makes it the default for most small businesses. LPs earn their place in specific situations: real estate syndications and investment funds where passive investors expect the familiar LP structure, and family or estate-planning arrangements where a clean split between controlling general partners and passive limited partners is exactly what you want. If you have passive investors and an active manager, the LP fits naturally.

Who is liable for what?

The general partner carries personal liability for the partnership's obligations. The limited partner's exposure is capped at their contribution — but that protection is conditional on remaining passive. A limited partner who starts managing the business, binding it, or holding themselves out as running it can be treated as a general partner and lose the shield. Many LPs make an LLC or corporation the general partner precisely so a person is never personally on the hook.

Forming and Filing

What document creates the LP?

The Certificate of Limited Partnership, filed with the Secretary of State's Business Services Division. It names the partnership, its designated South Dakota office, its registered agent, and each general partner. Limited partners are not listed. Until the state accepts the certificate, the LP does not legally exist.

How long does formation take?

Online filings are typically processed the same day, so your LP can be active and searchable within hours. Paper filings mailed to the state take one to two weeks. The online channel is faster and cheaper, so it is the recommended route.

Can I form a South Dakota LP if I live elsewhere?

Yes. There is no residency requirement for general or limited partners — investors and managers can live anywhere. What South Dakota does insist on staying in-state is the registered agent, who needs an actual physical street address here. A commercial agent covers that without any partner being present in the state.

Do I need a lawyer to form one?

Not to file the certificate — that is administrative, and a filing service can handle it. But an LP is usually a multi-party investment deal, and the limited partnership agreement that governs the deal is genuinely important. Have an attorney draft or review that agreement even if you handle the state filing through a service.

Registered Agent, Name, and Records

Does my LP need a registered agent?

Yes, continuously, from formation onward. The agent must have a physical South Dakota street address and be available during business hours to accept service of process and state mail. You can serve yourself with a qualifying address, or use a commercial service to keep your address private and guarantee availability.

What are the naming rules?

The name must include a limited partnership designator — "Limited Partnership," "L.P.," or "LP" — and must be distinguishable from every other entity on file with the Secretary of State. Check availability through the state's business search before filing, and consider reserving the name if you are not ready to file yet.

Are the limited partners' names public?

No. The public certificate lists only the general partners, the registered agent, and the designated office. Limited partners stay off the state record — a meaningful privacy advantage for passive investors.

Taxes and Ongoing Obligations

How is a South Dakota LP taxed?

By default it is a pass-through: the LP files a federal partnership return (Form 1065) and issues each partner a Schedule K-1; the partners report their shares on their own returns. South Dakota levies no state personal or corporate income tax, so there is no state income tax on the LP's operations — one reason the state is attractive for holding and investment structures. Talk to your accountant about self-employment tax, which differs between general and limited partners.

What are the ongoing requirements?

South Dakota keeps the maintenance light for LPs. You must keep your registered agent and designated office current, amend the certificate when public information like the general partners changes, and handle your federal partnership filings. If the LP sells taxable goods or services, register with the Department of Revenue for sales and use tax. Industry licenses run on their own schedules, separate from the entity.

What if I need to make a change or dissolve?

Changes to public information — the agent, the general partners — are filed as amendments with the Secretary of State. To close the LP, you file to dissolve, wind up the business, settle debts, distribute remaining assets to the partners, and end the entity's existence. Both are Secretary of State filings, and the online channel processes them quickly.

Frequently asked questions

Can a single person form a South Dakota LP?

No — a limited partnership needs at least two partners: at least one general partner and at least one limited partner. A single owner who wants a liability shield without a second partner should look at an LLC instead. The two-class structure is fundamental to what an LP is.

Can the same person be both a general and a limited partner?

A person can hold both a general partner interest and a limited partner interest in the same LP, but the general partner role still carries personal liability regardless of any limited interest they also hold. You still need at least two distinct partners overall for the LP to exist. This is a structuring question worth running past an attorney.

Does South Dakota tax my limited partnership's income?

South Dakota has no state personal or corporate income tax, so the LP's income is not taxed at the state level. Federally, the LP is a pass-through — it files Form 1065 and the partners report their shares. If the LP sells taxable goods or services in the state, it must register for and collect sales tax, which is separate from income tax.

Is a limited partnership agreement filed with the state?

No. The limited partnership agreement is a private document that governs the deal among the partners — capital, profit splits, management authority, distributions. It is never filed and never public. Only the Certificate of Limited Partnership goes on the state record, and it does not contain the agreement's terms.

How is an LP different from an LLP?

A limited partnership (LP) has general partners who manage and are liable, plus passive limited partners who are shielded. A limited liability partnership (LLP) is generally used by professional firms and shields all the partners from certain partnership liabilities while they all participate in management. The LP's defining feature is the active-versus-passive split; the LLP's is broad protection for co-managing professionals.

What does Mainstay Filing actually do for my LP?

We prepare and file the Certificate of Limited Partnership with the Secretary of State, confirm your name is available, and can serve as your South Dakota registered agent so your address stays off the public record. We are a filing and agent service, not a law firm or CPA — we handle the state-facing paperwork and leave the partnership agreement and tax structuring to your own advisors.

Ready to form your South Dakota LP?

Formation, your registered agent, and your annual report. One price, $199.00/yr, with the state fee passed through at cost.

Form Your South Dakota LP ($199.00/yr All-In)