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SDEasy to fileUpdated 2026

How to form an LLC in South Dakota

$150 filing fee · 1–2 business days (online) · Articles of Organization filed with the South Dakota Secretary of State.

By Cenk Karakuz · LLC formation researcher, verified against all 50 SOS portals · Last reviewed Aug 2026 · Editorial standards

Filing fee
$150
$150 online / $165 by mail
Online time
1–2 business days (online)
Annual report
$55 online annual report / $70 by paper
Due on the first day of the LLC’s anniversary month each year
Tax climate
No state income tax, no corporate income tax, no franchise tax — among the friendliest state-tax climates in the U.

Filing South Dakota LLC Articles of Organization currently costs $150 online or $165 by paper. The LLC must file an annual report, due on the first day of its anniversary month; the current fee schedule lists $55 online or $70 by paper. South Dakota does not impose an individual income tax, but entity classification, activity, sales, employment, and other states can create tax obligations. Use the Secretary of State fee schedule and annual-report FAQ for current filing information.

How much does a South Dakota LLC cost?

The current fixed state filing cost is $150 online for formation, followed by a $55 online annual report beginning in the following year. Paper filings cost more. A self-agent who qualifies would pay $370 in state formation and report fees through five years at current rates; optional registered-agent service and business-specific taxes or licenses are separate.

Why form your LLC in South Dakota

Famously favorable for trusts and asset-protection planning (the "South Dakota Trust"). Strong fit for finance, agriculture, and tourism (Mount Rushmore, Sturgis).

  • No personal income tax
  • No corporate income tax
  • No franchise tax
  • Famous for asset-protection trusts ("South Dakota Trust")
  • Sioux Falls is a credit card processing capital (Citibank, Wells Fargo)
  • Tourism economy (Mount Rushmore, Sturgis, Black Hills)

Best fit for: Finance & trusts (Sioux Falls) · Agriculture · Tourism

Don’t want to file yourself? Northwest Registered Agent files your South Dakota LLC for $39 + state fee and acts as your registered agent the first year free.

How to form a South Dakota LLC in 7 steps

  1. 1
    Search the South Dakota business name database

    Use the SD SOS Enterprise portal to search names. The name must include "Limited Liability Company", "L.L.C.", or "LLC". Reserve a name for $25 (held 120 days) if needed.

  2. 2
    Appoint a South Dakota registered agent

    Required to have a physical South Dakota street address. Can be the LLC owner if they're an SD resident, or a commercial registered agent service.

  3. 3
    File Articles of Organization

    File online through SD SOS Enterprise for $150 (or $165 by mail). Standard processing is 1–2 business days. The Articles include LLC name, registered agent, principal office, and management structure.

  4. 4
    Draft an Operating Agreement

    Not required by SD law but strongly recommended. Defines membership interests, voting, profit/loss splits, and dissolution. Banks routinely ask for it.

  5. 5
    Apply for an EIN with the IRS

    Free at irs.gov, takes 10 minutes online. Required for opening a business bank account, registering with the South Dakota Department of Revenue, and filing federal taxes.

  6. 6
    Register with the South Dakota Department of Revenue

    Register through SD EPath for sales and use tax (if you sell taxable goods/services). Note: SD has no income tax, so there's no income tax registration. Withholding is only relevant if you have employees subject to federal withholding.

  7. 7
    Calendar the annual report

    The report is due each year on the first day of the LLC's anniversary month. The current fee is $55 online or $70 by paper. The Secretary of State says the entity becomes delinquent two months after the due date and an additional $55 late fee applies.

File directly with South Dakota Secretary of State

South Dakota LLC taxes & compliance

No state income tax, no corporate income tax, no franchise tax — among the friendliest state-tax climates in the U.S. Sales tax is a flat 4.2% statewide.

Ongoing compliance checklist

  • Annual report — $55 online or $70 by paper, due on the first day of the anniversary month
  • No state income tax
  • No franchise tax
  • Sales and use tax filings (SD DOR)
  • Federal income tax (Form 1065 multi-member, Schedule C SMLLC)

Registered agent rules

Required — SD street address.

Compare LLC vs S-Corp vs C-Corp tax treatment →

Hidden costs new South Dakota LLC owners forget

  • $150 filing fee online (or $165 by mail)
  • Annual report: $55 online or $70 by paper, due on the first day of the anniversary month
  • Combined sales tax: 4.2% state + local (averaging 6.4% combined)
  • Foreign LLC qualification: $750 (one of the highest in the U.S.)
  • Some industries require state-specific licensing
  • A report becomes delinquent two months after its due date; the current additional late fee is $55

Should you use a formation service in South Dakota?

You can absolutely file directly with the South Dakota Secretary of State for the $150 state fee. The reasons most South Dakota owners use a service anyway are (1) registered-agent privacy — keeping their home address off public filings — and (2) calendar reminders for ongoing compliance.

Skip the paperwork

Have Northwest form your South Dakota LLC for $39 + state fee

Free registered agent for the first year. Real human support. Privacy-by-default — your home address stays off public filings.

Start with Northwest →Affiliate disclosure: we earn a commission.

Free tool

See the real 5-year cost of a South Dakota LLC

Filing fee · registered agent · annual report · franchise tax — all calculated, year by year.

Open cost calculator for South Dakota

South Dakota's zero income tax advantage for trust and holding LLCs

South Dakota uses an anniversary-month deadline. The annual report is due on the first day of the month in which the LLC was originally filed. The current fee schedule lists $55 online or $70 by paper. The Secretary of State says a report becomes delinquent two months after its due date and the current additional late fee is $55. This filing is separate from tax, licensing, and registered-agent obligations.

Real cost example

A self-filed online LLC starts with the $150 formation fee. If its first four annual reports are filed online at the current $55 rate, five-year state filing fees total $370 before registered-agent service, taxes, licenses, or future fee changes. A sample $149 yearly agent service would add $745 over five years.

#1 mistake South Dakota founders make

Owners sometimes use an outdated $50 fee or place the deadline at the end of the anniversary month. Current Secretary of State guidance says the report is due on the first day of that month and lists a $55 online fee.

South Dakota LLC: frequently asked questions

How much does it cost to start an LLC in South Dakota?

The current fee schedule lists $150 for online formation or $165 by paper. The annual report is $55 online or $70 by paper and is first due on the first day of the anniversary month in the following year.

How long does it take to form an LLC in South Dakota?

Online filings through SD SOS Enterprise approve in 1–2 business days. Mail filings take 5–7 business days.

Does South Dakota really have no income tax?

Yes. South Dakota has no personal income tax, no corporate income tax, and no franchise tax. This is one of the most favorable state-tax climates in the U.S. — comparable to Wyoming, Texas, Florida, Tennessee, and a few other states. The trade-offs are higher sales tax and a moderate annual report fee.

What's a "South Dakota Trust" and how does it relate to LLCs?

South Dakota has some of the most permissive trust laws in the world. Dynasty trusts can last forever (no rule against perpetuities), trust assets are highly protected from creditors, and there's no state income tax on trust income. This makes South Dakota a popular jurisdiction for sophisticated estate planning, often involving LLCs as trust assets. For most small businesses, this is irrelevant — but for high-net-worth families, the SD Trust + LLC combination is a major planning tool.

Does South Dakota have an LLC franchise tax?

No franchise tax of any kind. SD is one of only a handful of states with no income tax AND no franchise tax — making it one of the most owner-friendly tax environments in the U.S.

When is the South Dakota LLC annual report due?

It is due each year on the first day of the LLC's anniversary month. The current fee is $55 online or $70 by paper. The entity becomes delinquent two months after the due date, when the current additional late fee is $55.

Can a non-resident form an LLC in South Dakota?

Yes. SD has no residency requirement for LLC members or managers. You only need an SD-based registered agent. Out-of-state owners commonly use a commercial registered agent service.

Is South Dakota a good state to form an LLC?

For SD residents: yes — the no-income-tax + no-franchise-tax combination is exceptional. For asset-protection or estate-planning purposes (the "South Dakota Trust" structure), it's among the best in the world. For solo founders without an SD presence, your home state will likely require you to register as a foreign LLC anyway, eliminating the SD tax savings — and SD's foreign-LLC qualification fee of $750 is one of the highest in the U.S.

Does South Dakota LLC have to pay state income tax?

South Dakota is one of the few states with no corporate or personal state income tax, which means your LLC's profits pass through to members without any state-level income tax bite. Members still owe federal self-employment tax on their share of earnings, and if your LLC does business in other states, those states may tax the income sourced there. South Dakota also has no franchise tax or gross receipts tax on LLCs, making it one of the most tax-friendly states for small business owners. You will still need to collect and remit South Dakota sales tax at a rate of 4.2% if your LLC sells taxable goods or services in the state.

Can a non-resident form an LLC in South Dakota?

Yes, non-residents and foreign nationals can freely form an LLC in South Dakota — there is no requirement that any member or manager reside in the state. You will need to appoint a registered agent with a physical South Dakota address, which out-of-state owners typically satisfy by hiring a commercial registered agent service. If your LLC actively conducts business in your home state or any other state, you will also need to foreign qualify that entity there by filing an Application for Certificate of Authority and paying that state's fees. South Dakota's $150 filing fee and business-friendly laws attract many non-residents who want a low-cost domestic LLC structure.

How do I dissolve an LLC in South Dakota?

To dissolve a South Dakota LLC, you file Articles of Dissolution with the South Dakota Secretary of State, either online through the SD OneStop portal or by mail, along with a $10 filing fee. Before filing, your LLC should settle all outstanding debts, notify creditors, liquidate assets, and distribute remaining funds to members per your operating agreement. The Secretary of State's office processes dissolution filings and, once approved, the entity is officially terminated in the state's records. You should also cancel any local business licenses, close your EIN with the IRS by filing a final tax return, and notify the South Dakota Department of Revenue if your LLC collected sales tax.

Do I need a business license to operate an LLC in South Dakota?

South Dakota does not issue a general statewide business license for LLCs, but certain regulated industries require specific state licenses — for example, contractors need a license from the South Dakota Contractor's Licensing Board, and professionals such as accountants or cosmetologists must be licensed through their respective state boards. If your LLC sells taxable products or services, you must register with the South Dakota Department of Revenue to obtain a sales tax license, which carries a one-time $30 application fee. Local municipalities like Sioux Falls or Rapid City may also require a local business license or permit, so check with your city or county clerk's office. Operating without required licenses can result in fines, so confirm all applicable requirements before you open for business.

Is an operating agreement required for a South Dakota LLC?

South Dakota law does not require LLCs to have a written operating agreement, but the state strongly recommends one and courts will rely on it to resolve member disputes if one exists. An operating agreement spells out ownership percentages, how profits and losses are divided, member voting rights, rules for adding or removing members, and procedures for dissolving the company. Without one, your LLC defaults to South Dakota's standard LLC statutes under SDCL Title 47A, which may not reflect how you actually intend to run the business. Even for single-member LLCs, having a signed operating agreement reinforces the separation between you and the business, which helps protect your personal assets if liability is ever challenged.

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