Tool · Fintech
South Dakota income tax calculator
South Dakota state and federal income tax for 2025 or 2026.
Other income
Family
Deductions and adjustments
Federal deduction up to $25,000, 2025-2028.
The extra half-time pay; federal deduction up to $12,500 ($25,000 joint).
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How it’s calculated
2025: No individual income tax. 2026: No individual income tax.
The calculator applies South Dakota's own starting income, deductions, exemptions and main credits for the year chosen. The sources for every figure are linked under the South Dakota result.