South Dakota 2026 Income Tax Brackets & Rates
South Dakota does not impose a broad personal income tax in 2026. Residents only owe federal income tax and FICA on wage income. Property tax (~1.24% of assessed value) and a combined sales tax of about 6.44% make up most of the state-level burden.
2026 South Dakota Rate Overview
| Income tax system | No personal income tax |
| Top / flat state rate | 0% (no state income tax) |
| Long-term capital gains | Not taxed by state |
| Combined sales tax (state + local avg) | 6.44% |
| Avg effective property tax | 1.24% |
| Retirement income treatment | No state tax on retirement income |
| Business climate | No personal or corporate income tax; popular trust jurisdiction. |
Rates reflect 2026 statutory schedules from the South Dakota Department of Revenue and the Tax Foundation State Tax Facts dataset. State rate shown is the estimated effective top-bracket rate used by TaxEase.money calculators — see your filing-status bracket on the South Dakota Tax Guide.
How South Dakota Income Tax Works in 2026
South Dakota is one of nine U.S. states with no broad personal income tax on wages. Your W-2 withholding stops at federal income tax + FICA (6.2% Social Security up to $184,500 of wages and 1.45% Medicare on all wages). The state instead raises revenue through property tax, sales tax (avg 6.44%) and industry-specific levies.
Even though wage income is untaxed, you should still file federal Form 1040 and may owe state-level capital gains (Washington only), business income tax, or local levies. Use our 2026 Income Tax Calculator to model your federal liability.
Federal + South Dakota Marginal Rate Stack
State income tax stacks on top of federal income tax and FICA. The 2026 federal brackets (single filer) are:
| Federal bracket | Up to (single) | + South Dakota rate | Combined marginal |
|---|---|---|---|
| 10.00% | $12,400 | 0% | 10.00% |
| 12.00% | $50,400 | 0% | 12.00% |
| 22.00% | $105,700 | 0% | 22.00% |
| 24.00% | $201,775 | 0% | 24.00% |
| 32.00% | $256,225 | 0% | 32.00% |
| 35.00% | $640,600 | 0% | 35.00% |
| 37.00% | — | 0% | 37.00% |
FICA (7.65% combined) adds on top for wage income up to the Social Security wage base ($184,500 in 2026). See 2026 Federal Tax Brackets for the full schedule across all filing statuses.
Retirement Income, Social Security & Pensions
South Dakota: No state tax on retirement income.
Whether you live in South Dakota during retirement matters as much as where you saved. Pre-tax 401(k) and IRA contributions reduce both federal and (in most states) state taxable income today, while Roth contributions and conversions are taxed up front. If you plan to retire in a no-income-tax or retirement-friendly state, frontloading Roth conversions before you move can permanently lock in lower rates.
2026 Worked Example: $100,000 Single Filer in South Dakota
| Gross wage income | $100,000 |
| 2026 federal standard deduction (single) | $16,100 |
| Federal taxable income | $83,900 |
| Estimated federal income tax | $16,712 |
| Estimated South Dakota state tax @ 0.00% | $0 |
| FICA (6.2% SS + 1.45% Medicare) | $7,650 |
| Combined estimated tax | $24,362 |
| Estimated take-home | $75,638 |
Illustrative only — uses the TaxEase.money national-average state rate for South Dakota and ignores state-specific deductions and credits. Run the live South Dakota Income Tax Calculator for a personalized figure.
Compare South Dakota With Other States
South Dakota sits in a particular spot on the national tax map. These nearby states have similar effective rates:
South Dakota Calculators & Resources
South Dakota 2026 Tax FAQ
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Related South Dakota Resources
Sources Used
Our data is sourced exclusively from official tax authorities and non-partisan policy institutes. Rates and thresholds are verified against the most recent official publication for tax year 2026.
- Internal Revenue Service (IRS) ↗Federal 2026 brackets, standard deduction (Rev. Proc. 2025-32).
- Tax Foundation — State Individual Income Tax Rates ↗Cross-state rate, bracket, and deduction comparison data.
- Congressional Research Service (CRS) ↗Non-partisan analysis of federal tax law and proposals.
- South Dakota Department of Revenue ↗Official South Dakota 2026 rate schedule, forms, and instructions.
Last updated for tax year 2026 on January 5, 2026. This page is informational and is not tax advice. Confirm rates with the South Dakota Department of Revenue before filing.