South Dakota Tax Preparer Requirements: What You Need to Know

South Dakota is one of the simplest states in which to start a tax preparation practice. No state license is required for non-credentialed paid preparers. No exam, no continuing education mandate, no registration fee. The only legal prerequisite is a federal PTIN. What makes South Dakota genuinely distinctive is everything that comes next: no personal income tax, no corporate income tax, no estate tax, but a real sales tax obligation on your own preparation fees. Add to that the nation's No. 1 trust situs jurisdiction, a top-five agricultural state, a Sioux Falls financial services cluster, and a rapidly growing population of clients relocating from high-tax states. This guide covers every requirement and opportunity a South Dakota paid preparer needs to know.

Does South Dakota Require a State License?

South Dakota does NOT require non-credentialed paid tax preparers to obtain a state license, pass an exam, register with any state agency, or complete continuing education as a condition of preparing tax returns for compensation. The SD Board of Accountancy (dlr.sd.gov/accountancy) governs only Certified Public Accountants under ARSD 20:75. Its authority does not extend to non-CPA tax preparers.

South Dakota is one of approximately 34 states with no state-level tax preparer regulation beyond federal requirements. Any individual who obtains a federal PTIN may legally prepare federal tax returns for compensation in South Dakota.

PTIN: The One Mandatory Requirement

A Preparer Tax Identification Number (PTIN) is required of any person who prepares or substantially assists in preparing a federal tax return for compensation. Authority: IRC Section 6109(a)(4). The annual PTIN renewal fee is $18.75. Renew by December 31 each year at irs.gov/ptin. Renewal takes approximately 15 minutes online.

IRS Circular 230

All compensated preparers, regardless of credential level, are subject to practice standards under Treasury Circular 230. This includes duties of competence and diligence, prohibition on frivolous positions, and confidentiality obligations. Circular 230 applies uniformly in every state, including South Dakota.

Sales Tax License: A Separate and Mandatory Requirement

Although there is no preparer-specific license, any person or business charging for tax preparation services in South Dakota must hold a South Dakota Sales Tax License issued by the SD Department of Revenue (dor.sd.gov). There is no fee for the license. Apply online at apps.sd.gov/rv23cedar. Failure to collect and remit sales tax on prep fees is a distinct compliance obligation with real penalties. See Section 3 for the complete rate and remittance requirements.

AFSP: The Strongest Voluntary Credential Available

Because South Dakota requires nothing beyond a PTIN, the IRS Annual Filing Season Program (AFSP) is the primary way a non-credentialed SD preparer differentiates from competitors. Completion requires 18 hours of CE including a 6-hour Annual Federal Tax Refresher (AFTR) course with a knowledge test, ethics hours, active PTIN renewal, and consent to Circular 230 Subpart B obligations.

AFSP holders gain limited representation rights before the IRS (revenue agents, customer service, Taxpayer Advocate Service) for returns they signed, and appear in the public IRS preparer directory. In a state with no licensing floor, this credential is the clearest signal of professional commitment a non-credentialed preparer can display.

FTC Safeguards Rule (WISP)

Every paid tax preparer, including solo practitioners, must maintain a Written Information Security Plan (WISP) under the Gramm-Leach-Bliley Act (15 U.S.C. 6801(b)). Required elements include a designated responsible individual, multi-factor authentication (MFA) for all systems containing customer information, a risk assessment, and an incident response plan. FTC penalties reach up to $46,517 per violation per day. A free WISP template is available at IRS Publication 5708.

South Dakota Has No Income Tax: What This Means for Your Practice

South Dakota imposes no personal income tax on individuals. This is absolute and constitutionally protected; any future implementation of a state income tax would require a public vote. South Dakota and Wyoming are the only two states combining no personal income tax, no corporate income tax, and no estate tax. For a tax preparer, the practical consequences are far-reaching.

Individual Clients: Federal Only, Every Time

Every individual SD client is a federal-only return client (Form 1040 with applicable schedules). There is no SD equivalent of Form 1040. No SD income tax withholding exists; employers do not withhold state income tax from SD employee wages, and SD Form W-2 state withholding boxes have no values. No 1099 state copy filing obligation to SD exists. No SD estimated tax payments for individuals. The entire value you deliver is federal expertise.

Business Entities: Also Federal Only

South Dakota imposes no corporate income tax and no pass-through entity tax:

• S corporations: No SD S-corp return. No SD shareholder-level pass-through income tax.
• LLCs (single-member and multi-member): No SD entity-level income tax. No SD composite return for nonresident members.
• Partnerships: No SD partnership income tax return.
• C corporations: No SD corporate income tax return.
• Sole proprietors: No SD self-employment income tax return.

In every case, the federal return (Form 1040 Schedule C, 1065, 1120, 1120-S, etc.) is the only income tax return. Preparers serving SD business clients are filing federal only.

Nonresident Clients with SD-Source Income

Because SD has no income tax, there is no SD nonresident return. A California resident with income from an SD source (rental property, partnership interest in an SD entity) files no SD return. The preparer handles source-state reporting only through the federal return and any applicable state return for the client's home state.

What Is Not True: Other State Tax Obligations Still Exist

The absence of income tax does not mean SD businesses have no state tax compliance. Preparers advising business clients need to be aware of sales and use tax on taxable goods and services, the bank franchise tax on financial institutions (SDCL Chapter 10-43), the contractor's excise tax on construction work, motor fuel and other excise taxes where applicable, and property tax on real and personal property. These are not income tax items, but clients will ask about them.

Sales Tax on Your Prep Fees: The Critical SD Difference

Most no-income-tax states (Wyoming, Texas, Florida, Nevada) do not tax professional services. South Dakota is different. SD taxes virtually all retail services under SDCL Chapter 10-45, including tax preparation and accounting. The SD Department of Revenue has published dedicated guidance for accountants and tax preparers confirming this obligation (dor.sd.gov). This is not a gray area.

Rate Structure

Delivery-Location Rule

Sales tax is owed to the jurisdiction where the service is delivered to the customer, meaning the client's address. If your client is in Sioux Falls, the combined rate is 6.2%, remitted to the SD DOR, which distributes the city portion accordingly. If the client is in a rural county with no municipal tax, only the 4.2% state rate applies. Preparers with clients across multiple SD jurisdictions must track delivery location by client.

Your Compliance Checklist

1. Obtain a South Dakota Sales Tax License (no fee; apply at apps.sd.gov/rv23cedar).
2. Add the applicable combined rate to every invoice for SD-located clients.
3. File and remit returns on the SD DOR's prescribed schedule (monthly, quarterly, or annually, depending on volume).
4. Track client delivery locations to apply the correct municipal rate.
5. Do not charge sales tax on retransmission fees for e-filing (pass-through government fees) or on fees billed to non-SD clients (no SD nexus).

This sales tax obligation is the single most common compliance gap for new SD preparers. Because SD has no income tax, new entrants sometimes assume their practice has no state tax footprint. It does.

Starting a Tax Preparation Business in South Dakota

LLC Formation: The Lowest Ongoing Cost in the Country

South Dakota LLCs are registered through the Secretary of State (sdsos.gov). The cost structure is among the most favorable of any state:

• Articles of Organization filing fee: $150 (online) / $165 (paper)
• Annual Report fee: $55 (online) / $70 (paper); due on the first day of the LLC's anniversary month each year
• No franchise tax: SD imposes no franchise or privilege tax on LLCs, partnerships, or corporations
• No state income tax on LLC income: Zero SD income tax on earnings, ever
• Net recurring state cost: $55 per year (annual report only)

A tax preparer establishing their own practice as an SD LLC pays $150 to form and $55 per year to maintain, with no state income tax on business earnings. Alongside Wyoming, this is the lowest-cost LLC jurisdiction on an ongoing basis in the United States. The primary ongoing state tax obligation is the SD sales tax on prep fees.

Other Business Registrations

An SD preparer running their own shop will generally need:

• SD Sales Tax License (mandatory if collecting prep fees, which are taxable services)
• Federal EIN if the business has employees or is a multi-member LLC
• SD Department of Labor registration if hiring employees (unemployment insurance)

No SD state income tax withholding account is needed. No SD estimated tax account is needed. There is no SD state income tax to administer.

South Dakota Trusts: The Nation's No. 1 Situs Jurisdiction

South Dakota is ranked No. 1 trust situs jurisdiction in the United States by Trusts and Estates magazine (January 2025). The state holds approximately $3.5 trillion in trust assets and has attracted a concentrated ecosystem of trust companies, family offices, and private trust companies to Sioux Falls (Phillips Avenue corridor) and statewide. Preparers who develop Form 1041 competence have access to a high-fee client segment that most storefront practices do not touch.

Why Trusts Choose South Dakota

• No state fiduciary income tax: SD imposes zero income tax on trust income. There is no SD equivalent of Form 1041. All trust return work is federal only.
• Dynasty trusts: SD repealed its Rule Against Perpetuities in 1983. Trusts can last in perpetuity with no mandatory termination, allowing compounding across unlimited generations without a taxable distribution event.
• Directed trusts (SDCL 55-1B): SD codifies the separation of investment advisor, distribution director, and trustee roles. A trust advisor or committee (often a family member or financial advisor) directs investments and distributions; an SD-chartered administrative trustee handles compliance. This structure is the foundation of the SD trust industry.
• Decanting statutes: SD allows modification of irrevocable trusts through decanting without court approval.
• Privacy: SD trust documents are not public record. Trust privacy laws are among the strongest in the nation.
• Community property trusts: SD community property trust laws offer 100% step-up in basis on death of the first spouse, versus 50% in standard common-law states.

What This Means for Your Filing Practice

Grantor trust status first. Many SD trust structures are set up as grantor trusts where the grantor (settlor) reports all trust income on their own personal Form 1040 (Schedules B, D, E as applicable). No Form 1041 is filed for these trusts under IRC Sections 671-679. Confirm grantor trust status before assuming a Form 1041 is needed.

Form 1041 filing triggers. For non-grantor trusts, a federal Form 1041 is required when gross income is $600 or more in the tax year, or when any beneficiary is a nonresident alien. Schedule K-1 (Form 1041) is issued to each beneficiary who receives a distribution.

Source-state complications. While SD imposes no state fiduciary income tax, income flowing through from investments or businesses in other states may still be taxable in those states. A SD dynasty trust with partnership interests in California real estate or a New York partnership may still owe CA or NY tax on that income. Preparers handling complex SD trust clients must track state-source income carefully and prepare state returns for the states where the income originates.

Kaestner protection. The U.S. Supreme Court held in North Carolina Dept. of Revenue v. Kimberly Rice Kaestner Family Trust (2019) that a state may not tax undistributed trust income based solely on the in-state residence of a beneficiary when the beneficiary has no right to demand distributions. This ruling reinforces SD trust planning and limits exposure to opportunistic state taxation.

Fee opportunity. Trust returns require substantially more preparer time and specialized knowledge than a standard Form 1040, and they command significantly higher fees. Very few non-credentialed preparers serve this segment. The barrier is knowledge, not credential.

Agriculture Clients and Schedule F

South Dakota is a top-five agricultural state nationally, ranking in the top five for corn, soybeans, sunflowers, oats, and winter wheat, with significant cattle and hog operations statewide. Agricultural land covers the majority of the state's 49.4 million acres. Most SD farms are family operations structured as sole proprietorships, partnerships, or family LLCs. A preparer who develops Schedule F expertise has access to one of the largest and most underserved client segments in the state, particularly in rural areas where CPAs are scarce.

Schedule F: Key Knowledge Areas

Schedule F (Form 1040: Profit or Loss from Farming) is the primary form for sole proprietor farmers. Income items include crop sales (corn, soybeans, wheat, sunflowers), livestock and livestock product sales (cattle, hogs), agricultural program payments (ARC, PLC, CRP, WHIP+), crop insurance proceeds, custom hire income, and cooperative distributions (Form 1099-PATR). Expense items include feed, seed, fertilizer, chemicals, machinery depreciation, fuel and repairs, land rent paid, hired labor, insurance, and interest.

The March 1 Farmer Rule

Under IRC Section 6654(i), a taxpayer qualifies as a farmer for estimated tax purposes if at least 66.67% of their gross income comes from farming. Qualifying farmers can skip all quarterly estimated tax payments and instead file their return and pay all tax by March 1 of the following year (or by January 15 with one payment). If the March 1 deadline is missed, penalty exposure triggers and April 15 becomes the standard deadline. This is a critical planning point that separates a knowledgeable farm tax preparer from a generalist. Farm clients need to be told about this rule early in the engagement.

Section 199A and Agricultural Cooperatives

Farm income from sole proprietorships, S corps, and partnerships qualifies for the 20% qualified business income deduction under Section 199A. For commodity cooperative distributions, the Section 199A(g) deduction (the domestic production activities deduction passed through from cooperatives, or DPAD) replaces or modifies the standard 199A calculation. This is the single most complex area in farm returns and requires dedicated knowledge of the 2017 TCJA rules as applied to agricultural cooperatives. Clients who sell through SD grain cooperatives and marketing cooperatives are directly affected.

Farm Income Averaging (Schedule J)

Schedule J allows a farmer to elect to spread current-year farm income over the prior three base years (using those years' lower tax rates). This is a powerful planning tool for clients with volatile income: a bumper-crop year that pushes income into higher brackets can be averaged down materially. Farm income averaging is one of the few income-smoothing tools available under federal law and it is exclusive to farm clients.

Heavy Equipment: Section 179 and Bonus Depreciation

SD farm equipment is often the largest capital expenditure on the client's balance sheet. Preparers need fluency in Section 179 expensing limits, bonus depreciation phase-down schedules, and placed-in-service rules for farm machinery. CRP (Conservation Reserve Program) payments are taxable as ordinary income but are not subject to self-employment tax, a distinction that must be handled correctly on Schedule F.

SD Agricultural Property Tax and Sales Tax Exemptions

Since 2010, SD agricultural land is assessed on productivity value, not market value. Cropland valuation uses countywide acreage, production, and statewide crop prices; non-cropland uses a cash rent formula. This can produce valuations significantly below market. SD exempts from sales tax the purchase of farm machinery, attachment units, irrigation equipment, certain farm inputs (seed, feed, fertilizer, pesticides), and veterinary services for livestock under SDCL 10-45. Clients ask about these exemptions frequently; knowing the rules strengthens the client relationship.

Farm tax returns require substantially more preparer time than a standard W-2 return and command significantly higher fees commensurate with their complexity.

Banking and Financial Services Clients in Sioux Falls

Sioux Falls is home to the credit card operations of Citibank (3,000+ employees), Wells Fargo regional operations, Capital One, and a cluster of trust companies. The absence of a state usury cap (SD eliminated interest rate limits in 1981 via SDCL 54-3-13.1, attracting the national credit card industry) is the historical driver. SD holds the second-largest bank asset base in the United States behind New York.

Individual Employees: High Income, Zero State Complexity

Individual employees of banks and credit card issuers in Sioux Falls are federal-only filers, just like any other SD resident. There is no SD income tax on their wages. The value-add is purely federal: stock options, RSUs, deferred compensation, ESPP, relocation income, and investment portfolios. High-income profiles create above-average fee opportunity with no state return to manage. These are attractive clients.

Bank Franchise Tax (SDCL Chapter 10-43)

SD does not have a corporate income tax, but financial institutions pay the Bank Franchise Tax instead (6% of net income). This tax is paid by the financial institution entity itself, not by individual employees. Non-credentialed preparers will generally not prepare bank franchise tax returns; those flow to CPA firms. However, if you serve business clients that are financial institutions, you need to understand that their entity-level income tax is the bank franchise tax, not a corporate income tax return.

E-File Requirements

State Level: No Mandate (Because There Is No State Return)

South Dakota has no state e-file mandate for individual returns. The reason is structural: SD has no state individual income tax, so there are no state individual returns to e-file. There is no SD equivalent of IRS Form 8948. No SD state return preparation software module is needed for individual clients.

SD-specific business tax returns (sales tax, bank franchise tax) are filed directly through the SD DOR's online portal (dor.sd.gov) by the business or its representative, not through tax preparation software e-file mandates.

Federal Level: Applies Fully in SD

The IRS federal e-file mandate applies to all preparers regardless of state. A "specified tax return preparer" is any preparer who reasonably expects to file 11 or more covered returns in a calendar year. Once that threshold is met, the preparer must e-file all covered returns they prepare and file, not just the ones above the threshold. If a firm-level count of covered returns reaches 11 or more, every member of the firm must e-file. Covered returns include Form 1040, 1040-SR, 1040-NR, 1041, 1065, 1120, and 1120-S.

Penalty for non-compliance: $50 per return not e-filed when required (IRC Section 6695(b)), up to $25,000 per calendar year. A client can sign Form 8948 to decline e-file; the preparer is not penalized for a client's opt-out. A hardship waiver can be requested on Form 8944.

The practical standard for a new SD preparer: e-file everything from day one. All major tax software (Drake, TaxSlayer Pro, ProSeries, UltraTax, TaxWise) supports e-file by default.

High-Value Client Niches in South Dakota

Trust Clients (Highest Fee Per Return)

SD trust companies administer trusts for wealthy clients nationally. The preparer's client is not the trust company but the settlor, beneficiary, or individual trustee who needs Form 1041 or personal return work. Form 1041 returns command substantially higher fees than a standard Form 1040, and may involve additional state returns in beneficiary home states. Key knowledge: directed trust structure, grantor trust rules (IRC Sections 671-679), generation-skipping transfer tax basics, and coordinating with SD-chartered trustees. Competition is CPA firms; most non-credentialed preparers do not compete here, which creates real opportunity for those who develop the expertise.

Agriculture (Highest Volume)

Tens of thousands of farm operations statewide, concentrated in eastern SD (corn and soybean belt) and western SD (ranching). Farm returns command meaningfully higher fees than a standard W-2 return due to their complexity. Differentiators: March 1 rule knowledge, Section 199A cooperative computation, heavy equipment depreciation, CRP payment treatment, and farm income averaging (Schedule J). Deep rural areas are underserved.

Healthcare Workers in Sioux Falls and Rapid City

Sanford Health and Avera Health are the two dominant health systems employing more than 20,000 combined in Sioux Falls. Monument Health is the leading employer in Rapid City. These are high-income federal-only filers. Key issues include student loan interest deduction phaseouts, HSA and FSA contributions (Form 8889), PSLF non-taxability, physician S-corp reasonable compensation, and multi-state returns for traveling nurses and locum tenens physicians. Individual returns command solid fees, with physician practice entity returns at the higher end of the market.

Military at Ellsworth AFB (Rapid City Market)

Ellsworth Air Force Base near Rapid City is home to B-1B Lancer wings and approximately 3,800 active duty personnel plus family members. Members who establish SD as their domicile owe no state income tax anywhere, a significant financial advantage. Key issues include combat zone pay exclusion (IRC Section 112), MSRRA (Military Spouses Residency Relief Act), SCRA protections against state taxation on out-of-state servicemembers, and BAH and BAS exclusions from federal gross income.

Free competition from MilTax (Military OneSource) and an on-base VITA site limits the paid preparer market for lower-income enlisted members. The fee-paying segment: mid-to-senior enlisted and officer clients with investment income, rental properties, TSP distributions, or multi-state complexity that exceeds VITA scope.

New SD Residents from High-Tax States

SD's no-income-tax status has attracted significant in-migration from California, New York, Illinois, and other high-tax states. Many are remote workers or early retirees establishing domicile in SD. Key issues: a part-year return is required in the prior state for the move year; California's Franchise Tax Board aggressively pursues former residents who maintained CA ties, so preparers must be fluent in CA safe harbor exit planning; and RSU and option grants often have multi-state sourcing issues in the exit year. The federal return going forward is SD-simple; the exit-year package is complex and commands proportionally higher fees.

Frequently Asked Questions