South Dakota Income Tax Calculator
Calculate your 2026 South Dakota state income tax. See your bracket breakdown, effective rate, and how South Dakota compares to neighboring states.
Your Tax Inputs
Effective Rate vs Neighboring States
South Dakota Tax Brackets (2026)
Federal vs South Dakota Tax Comparison
Estimate for your income and filing status. Federal uses 2026 brackets and standard deduction.
| Item | Federal | South Dakota | Total |
|---|
About South Dakota state taxes (Tax year 2026)
South Dakota has no state income tax on individuals or corporations. The state is constitutionally prohibited from levying an income tax. It relies on sales tax and other revenue sources.
Groceries are taxed at the full state rate. Prescription drugs are exempt.
South Dakota's lack of income tax makes it very tax-friendly, though its taxation of groceries at the full rate is a notable drawback for lower-income residents.
Filing in South Dakota: returns for tax year 2026 are administered by the South Dakota Department of Revenue and are generally filed in 2027 by the federal April deadline unless South Dakota declares a state-specific extension. Tax type on this return: None. Top marginal rate: 0%. State sales-tax rate: 4.2%. For the most current contact info, see the Federation of Tax Administrators directory.
South Dakota — Does South Dakota have a state income tax? No. South Dakota has no personal or corporate income tax and is constitutionally prohibited from enacting one.
South Dakota — What is the sales tax in South Dakota? South Dakota has a 4.2% state sales tax. With local taxes, the average combined rate is about 6.4%.
South Dakota — Does South Dakota tax groceries? Yes, South Dakota taxes groceries at the full state sales tax rate, making it one of the few states that fully taxes food purchases.
How this page is reviewed
| Risk tier | High YMYL |
|---|---|
| Author | Calculover Editorial Team Tax education |
| Editorial owner | Calculover Tax & Payroll Desk State-tax methodology owner |
| Reviewer | Calculover Editorial Review Government-source and limitation review |
| Last reviewed | 2026-05-14 |
| Last verified | 2026-05-14 |
| Data effective date | 2026-01-01 |
| Jurisdiction | South Dakota |
Methodology
State-tax per-state pages apply the published 2026 bracket schedule, standard deduction, and filing-status rules for the listed jurisdiction. Federal AGI inputs are mapped to state taxable income before bracket math runs. Local taxes (NYC, Philadelphia, certain Ohio cities) are flagged but not embedded in the base estimate.
Assumptions
- The user enters federal AGI, filing status, and state-specific adjustments as provided.
- Brackets, standard deductions, and credits reflect the 2026 statutory values published by the state Department of Revenue and the Tax Foundation.
- Local income taxes and reciprocity-agreement situations are noted but not auto-applied.
Limitations
- These pages do not predict mid-year legislative changes, rate adjustments, or new local tax assessments.
- Multi-state filers, convenience-of-employer rules, and special-circumstance credits require additional tax-professional analysis.
Sources
- State Tax Rates, Federation of Tax Administrators
- State Individual Income Tax Rates and Brackets, Tax Foundation
- State Government Resources, Internal Revenue Service
Professional guidance: This page is for state-tax education only and is not tax, legal, financial, or investment advice. State tax decisions and multi-state filing should be reviewed with a CPA or enrolled agent licensed in the relevant states.