South Dakota Tax Calculator 2026
South Dakota does not levy a state income tax.
SD
South Dakota state income tax estimator for filing year 2026
Use this page to model your 2026 filing outcome with South Dakota selected. Since South Dakota has no state income tax, the state estimate focuses on confirming no state liability under current rules.
South Dakota tax profile snapshot
- State: South Dakota (SD)
- Filing year: 2026
- Tax year data applied: 2025
- South Dakota does not levy a state income tax.
Need federal and state in one view?
Use the full Tax Calculators page for side-by-side federal and state workflows.
Frequently asked questions
Does South Dakota have state income tax for filing year 2026?
No. South Dakota does not levy a state income tax in the current dataset for tax year 2025.
What South Dakota rate assumptions are used on this page?
South Dakota is modeled as a no-income-tax state in this filing year view.
Should I use this page or the main tax calculator?
Use this page for a state-specific workflow preloaded to one state and year. Use the main tax calculator if you need both federal and state tabs together or want to switch states quickly.