South Dakota relies heavily on property and sales taxes, as it levies no state income tax. The statewide effective property tax rate is exactly 1.00%. In 2025, the state passed landmark legislation (SB 216) that imposes strict 3% caps on countywide assessment growth to protect homeowners from rapidly escalating local budgets (est., Tax Foundation 2026).
Without an income tax, South Dakota depends on property and sales taxes to fund municipal services and public schools. While the state government collects no property tax itself, it stringently regulates how much local governments can tax you, recently imposing massive new reforms to curb budget bloat.
The 85% Assessment Ratio
In South Dakota, county assessors must reappraise all property annually to its full and true market value as of January 1. However, to maintain fairness across districts, the state equalizes all properties to 85% of market value for tax purposes.
For example, if your home is worth $400,000 on the open market, your taxable value (before any other exemptions) will be set at $340,000. Your local mill levies are applied to this reduced figure.
South Dakota statewide effective rate. On a $350,000 home, expect approximately $3,500 per year at the statewide average. (est., Tax Foundation 2026).
| Home Value | Annual Tax (est.) | Monthly Payment | vs. U.S. Average |
|---|---|---|---|
| $200,000 | $2,000 | $166 | +$200 above avg. |
| $350,000 | $3,500 | $291 | +$350 above avg. |
| $500,000 | $5,000 | $416 | +$500 above avg. |
| $750,000 | $7,500 | $625 | +$750 above avg. |
| $1,000,000 | $10,000 | $833 | +$1,000 above avg. |
Estimates use 1.00% statewide effective rate. U.S. average uses 0.90%. Source: est., Tax Foundation / Census ACS.
Strict Caps on Tax Increases (SB 216)
In March 2025, South Dakota signed Senate Bill 216 into law, drastically changing how much property taxes can rise:
- 3% Cap on Assessed Value Growth: Starting with 2026 assessments, the annual growth of the total countywide aggregate assessed value for owner-occupied single-family homes is strictly capped at 3%.
- Local Budget Limits: Historically, local governments could increase their property tax requests by inflation (CPI) up to 3%. Now, the budget “growth factor” is strictly limited to 3%, cutting off excess municipal revenue grabs.
Owner-Occupied Classification and Senior Freezes
South Dakota offers two major forms of tax relief for primary homeowners:
- Owner-Occupied Classification: If you own and occupy the home as your primary residence, you qualify for a significantly lower school general fund tax levy than commercial or non-owner-occupied properties.
- Senior/Disabled Assessment Freeze: If you are 65+ or disabled, you can “freeze” the assessed value of your home to its base year value. Under expanded 2025 limits, your household income must be under $56,595 (single) or $66,885 (multi-member), and the home’s market value must be under $514,500.
Estimated Tax Rates Across the Top 10 Counties
Yankton County suffers the highest effective property tax rate in the top 10 (over 1.70%), driven by high local municipal levies and school funding requirements. Minnehaha County (Sioux Falls) sits slightly above the state average at 1.15% due to its massive urban infrastructure needs, while Pennington County (Rapid City) tracks perfectly with the 1.00% state median.
| County | Effective Rate | Annual Tax on $350k Home | Notes |
|---|---|---|---|
| Minnehaha County | ~1.15% | $4,025 | Includes Sioux Falls; state’s largest county. |
| Pennington County | ~1.00% | $3,500 | Includes Rapid City. |
| Lincoln County | ~1.19% | $4,165 | Rapidly growing Sioux Falls suburbs. |
| Brown County | ~1.06% | $3,710 | Includes Aberdeen. |
| Brookings County | ~1.17% | $4,095 | Includes South Dakota State Univ. |
| Meade County | ~1.27% | $4,445 | Includes Sturgis. |
| Codington County | ~1.11% | $3,885 | Includes Watertown. |
| Lawrence County | ~1.26% | $4,410 | Includes Spearfish and Deadwood. |
| Yankton County | ~1.74% | $6,090 | Highest effective rate among top 10 counties. |
| Davison County | ~1.11% | $3,885 | Includes Mitchell. |
Disclaimer and Methodology
This calculator provides estimates for planning purposes only, based on effective property tax rates (actual median taxes paid divided by median home values). In South Dakota, property taxes are levied by overlapping local subdivisions, and properties are taxed on 85% of their market value. This calculator uses historical “effective rates” to bypass the 85% equalization math and provide a highly realistic estimate of actual homeowner burden.
What this calculator does not account for:
- Non-Owner Occupied properties (vacation homes, rentals), which are subject to a much higher school district mill levy.
- Opt-outs. Under state law, local districts can vote to “opt-out” of the revenue caps to fund emergency projects or schools, which will raise local taxes beyond the 3% cap.
How to get an accurate estimate:
- Find your home’s 100% Assessed Value on your County Assessor’s property search tool.
- Multiply the Assessed Value by 0.85 to find your equalized taxable value.
- Multiply the result by your local consolidated mill levy, and divide by 1,000.
Data sources: Statewide effective rate and aggregate county effective rates derived from the Tax Foundation, Census ACS, and SmartAsset aggregations. Statutory rules, exemption limits, and SB 216 caps from the South Dakota Department of Revenue.
Return to the National Property Tax Calculator to compare South Dakota with other states.
