Starting a service business in South Dakota

Form your business in South Dakota

You form a South Dakota LLC by filing articles of organization with the Secretary of State, online through the SOSEnterprise system or on paper. The fee is $150 filed online or $165 on paper (the paper price includes a $15 paper filing fee), as listed on the Secretary of State's fee schedule in October 2026. Expedited handling is available for $50. The office does not publish a standard turnaround on its fee page, so file before you need the LLC name on a bank account or your contractor's excise tax license.

Ongoing state filings

Every South Dakota LLC files an annual report with the Secretary of State. It costs $55 online or $70 on paper, as listed in October 2026, and a delinquent report carries a $55 late fee. The Secretary of State tells owners to use its business search tool to see when their report is due, so look up your business ID right after you form and put that date on your calendar.

Using a business name (DBA)

If you do business under any name other than your legal name or your LLC's exact name, register it as a DBA (fictitious business name) with the Secretary of State. Registration is $10, as listed in October 2026, and amendments and renewals are also $10 each. DBA registrations must be renewed every 5 years, renewals can be filed within 90 days of the expiration date, and an expired DBA cannot be renewed: you have to file it again as a new registration.

Not sure whether you need an LLC at all? Read LLC vs sole proprietor for contractors, then get your free EIN from the IRS.

Licensing for service trades

The state licenses the plumbing and electrical trades through the Department of Labor and Regulation. The State Electrical Commission says it licenses all electricians in South Dakota, inspects wiring installations and handles wiring permits; since November 12, 2024 it inspects permits under the 2023 National Electrical Code. The State Plumbing Commission licenses plumbers and plumbing contractors, plus several specialties that home-service companies run into: sewer and water installers, water conditioning installers, underground irrigation (sprinkler) installers, appliance installers and septic system installers. Separately, anyone doing construction, remodeling or repair that becomes part of real property needs a contractor's excise tax license from the Department of Revenue (see below). Mowing, cleaning, painting and handyman work are not on either commission's list, but cities set their own rules, so call the building or licensing office in each city where you take jobs.

• South Dakota State Electrical Commission: Licenses all electricians, issues wiring permits and inspects installations
• South Dakota State Plumbing Commission: Plumbers and plumbing contractors, sewer and water, water conditioning, underground irrigation, appliance and septic installers
• South Dakota Department of Revenue, Contractor's Excise Tax: Contractor's excise tax license for anyone doing construction or realty improvement work

Workers' compensation

South Dakota is unusual here. The Department of Labor and Regulation states plainly that no South Dakota law requires an employer to carry workers' compensation insurance, while also saying the state's workers' compensation law covers all employers with limited exceptions and that it highly recommends coverage. The catch is in the next line: an uninsured employer may be sued in civil court by an injured worker. For a crew that runs ladders, mowers, pressure washers or snow blades, one injury lawsuit can cost more than years of premiums. Most employers buy a policy from an insurance company; the alternative is proving to the department that you can pay full benefits yourself as a certified self-insurer, which is realistic only for large companies. The department's exceptions include certain domestic workers, farm labor and people whose work is outside the usual course of your business, and it runs an online service where anyone can verify an employer's coverage.

More on coverage: business insurance for contractors.

Sales tax on services

South Dakota's sales tax applies to the gross receipts of all retail sales, including the sale of services, unless a product or service is specifically exempt, the buyer gives you an exemption certificate, or the service is a construction service taxed under the contractor's excise tax instead. That is the reverse of most states. The Department of Revenue's July 2026 Sales and Use Tax Guide lists the state rate at 4.2%, plus municipal sales tax of 1% to 2% in cities that impose one, charged where the customer receives the service. In practice, recurring services such as lawn care or cleaning are generally taxable unless an exemption covers them; the department publishes industry Tax Facts, and you should read the one for your trade before you set prices. You apply for a sales tax license with the Department of Revenue and file and pay through its EPath system.

Recording business calls in South Dakota

South Dakota follows one-party consent. SDCL 23A-35A-20 makes it a Class 5 felony to record a call or conversation by an eavesdropping device without the consent of a party to it, which means you may record calls you take part in. For callers in all-party states, a short recorded notice keeps you covered; our guide to recording business calls explains the setup.

See our guide to recording business calls before you turn on call recording or an AI receptionist.

How the seasons shape the work

South Dakota winters are long and windy, and a blizzard on the open plains can close roads for days, so snow removal, furnace and frozen-pipe calls carry many service companies from November to March. The outdoor season is compressed into late spring through fall, with summer hail driving roof, siding and window work in some years. West River and the Black Hills add tourism-season demand for cleaning and property care at rentals and cabins, while East River towns like Sioux Falls and Brookings run on a more typical suburban calendar.

The 2% contractor's excise tax and the bid factor

Prime contractors on construction or realty improvement projects in South Dakota owe a 2% contractor's excise tax on their gross receipts, and those receipts include any tax collected from the customer. Because the tax is figured on a total that includes the tax itself, the Department of Revenue says you can use a bid factor of 2.041% when preparing a bid or invoice so you collect the full amount, then use a straight 2% on the return. State law allows the tax to appear as a separate line item, and contractors must write their excise tax license number on or near the building permit.

Sales tax and excise tax can both show up on one company

A handyman or exterior company in South Dakota can owe both taxes: sales tax on services like cleaning or lawn care, and contractor's excise tax on jobs that become part of a building, such as a new deck or a window replacement. Set up your invoices and job types so each job is coded the right way from the start.

Then set up the back end that gets you hired

The paperwork makes you legal. Customers still have to find you, reach you and pay you. Before your first job, set up a business phone number, email on your own domain, a Google Business Profile, a simple website, and a way to send quotes and take card payments. The launch checklist lays out the order.

South Dakota questions