South Dakota LLP Costs — What You Actually Pay to Register and Maintain One

The one unavoidable cost to bring a South Dakota LLP into existence is the state fee to register the partnership with the Secretary of State, Business Services Division. This is the fee attached to the LLP registration — the qualifying filing that adds the liability shield to your partnership. The exact amount is set by the state and shown on the receipt card on this page, which mirrors what the state charges.

This single state fee is what turns a general partnership into a registered limited liability partnership on the public record. There is no separate charge for naming a registered agent inside the registration — the agent designation is part of the filing itself.

What the registration fee does and does not include

The state fee covers the government's processing of your LLP registration and nothing more. It does not include an EIN (the IRS issues that free), a partnership agreement (an internal document you or an attorney prepare), a business bank account, or any professional licensing your partners need. Those are separate line items with their own sources, and none of them is a Secretary of State fee.

After registration, the main recurring state cost is the annual report filed with the Secretary of State. South Dakota ties the deadline to your registration anniversary, and the report keeps the state's record of your agent, principal office, and contacts current. The amount, like the registration fee, is set by the state and reflected on the receipt card.

Budget it as a fixed yearly line

Because the annual report recurs on your anniversary every year, treat it as a standing entry in your books the same way you would a subscription. The report itself is a light-touch update, not a financial disclosure — you are not reporting revenue or profit — so the cost is the filing fee, not a tax on your earnings. The larger risk is not the fee but the consequence of missing it: an LLP that lets its report lapse can fall out of good standing, and restoring good standing is more disruptive and more expensive than simply filing on time.

Beyond the state fees, the total cost of running an LLP depends on decisions you make about how much of the work you do yourself and what services you engage.

Registered agent service

You can serve as your own registered agent at no additional cost if you have a physical South Dakota street address, are available during business hours, and are comfortable with that address being public. A commercial registered agent service is a paid, recurring expense, but it keeps a professional address on the public record, guarantees someone is always available to receive legal process, and forwards documents to you. For partners who value privacy or who travel, that recurring fee buys real convenience and compliance certainty.

Name reservation

If you want to lock your partnership name before you are ready to file, a name reservation with the Secretary of State carries its own small fee. It is optional — most partnerships simply file when their name is settled — but it exists if you need to hold a name while you finish other preparations.

Assumed or fictitious name

If your LLP will operate under a name different from its registered legal name, you register that assumed name separately. In South Dakota this can be done at the state level or at the county Register of Deeds, and it carries its own fee and renewal cycle. This is only relevant if you plan to trade under a different name than the one on your registration.

Several real costs of running an LLP have nothing to do with the Secretary of State, and partners sometimes lump them into "formation cost" by mistake.

The EIN is free

The IRS issues an Employer Identification Number at no charge. If a service quotes you a fee "for your EIN," you are paying for their time filling out the free federal form, not for the number itself. You can apply directly through the IRS EIN Assistant in about ten minutes.

The partnership agreement

A partnership agreement is not a state filing and carries no state fee. If you draft it yourself it costs nothing; if you have an attorney prepare or review it — which is sensible for a multi-partner professional practice — that is a legal fee, not a filing fee. It is money well spent, because the agreement governs profit sharing, admissions, departures, and dissolution, but it belongs in a separate column from your registration cost.

Professional licensing and taxes

Many LLPs are formed by licensed professionals whose boards charge their own licensing and renewal fees. And while South Dakota has no state income tax on pass-through partnership income, a partnership that makes taxable sales must register for and remit sales tax through the Department of Revenue. These are ongoing obligations independent of anything the Secretary of State charges.

When you register through Mainstay Filing, you pay the state fee that South Dakota charges plus our service fee for preparing and submitting the registration correctly and standing behind it. We keep what we display equal to what is charged — the receipt card on this page renders the actual state amounts, and there are no surprise line items bolted on after checkout.

Our registered agent service, if you choose it, is a separate recurring fee that keeps a professional South Dakota address in the public record and puts a real person behind receiving your legal mail. We are transparent about which dollars go to the state and which pay for our work, so you always know exactly what you are buying and why.

What we do not charge for

We never charge you for an EIN — that is free from the IRS, and we will point you to the right place to get it. We do not bill for legal advice we are not qualified to give; a partnership agreement's terms are between you and your attorney. What you pay us for is accurate, on-time state filing and, if you want it, dependable registered agent service.