South Dakota Mortgage Calculator
South Dakota is one of a handful of states with no state income tax, which shifts more of the local funding burden onto property tax, and county rates here vary more than most buyers expect, from under 0.5% to well over 1.5%. This South Dakota mortgage calculator uses real county-level property tax data instead of one flat statewide number, so your estimate reflects where you’re actually buying.
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Statewide Average Spotlight
No state income taxThis is South Dakota’s statewide blended average. Your actual rate depends heavily on which of the state’s 66 counties you buy in.
Your Estimated Monthly Payment
Payment breakdown
Balance vs. interest paid over time
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What If You Paid Extra Toward Principal?
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What If Your Rate Changes?
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Your 5-Year Equity Projection
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Why South Dakota’s No Income Tax Status Matters for Your Mortgage
South Dakota is one of only a handful of states with no state income tax, which means the state leans more heavily on property tax and sales tax to fund schools and local government. In practice, that shows up as a statewide effective property tax rate of roughly 1.09%, noticeably above the national average, even though South Dakota’s overall tax burden remains competitive because there’s no income tax bite on top of it. A South Dakota mortgage calculator that only shows principal and interest misses this trade-off entirely, which is why property tax gets equal billing here.
South Dakota Property Tax by County: The Real Spread
| County | Effective rate | Notes |
|---|---|---|
| Oglala Lakota | 0.38% | Lowest documented rate in the state |
| Ziebach | 0.62% | Rural, well below statewide average |
| Pennington (Rapid City) | 1.08% | Close to statewide average |
| Minnehaha (Sioux Falls) | 1.14% | State’s largest city |
| Lincoln | 1.15% | Fast-growing Sioux Falls suburb, highest median home values |
| Brown (Aberdeen) | 1.18% | Above statewide average |
| McPherson | 1.55% | One of the higher rates in the state |
| Todd | 1.81% | Highest documented rate in the state |
How South Dakota Assesses Property: The 85% Equalization Factor
South Dakota assesses non-agricultural property at full and true market value, then applies a county-specific equalization factor, generally around 85%, so most homes are taxed on roughly 85% of their assessed market value rather than 100%. Agricultural land uses a separate productivity-based valuation. This is different from states that apply a flat statutory assessment ratio, and it’s part of why comparing South Dakota’s “rate” directly to another state’s rate can be misleading without accounting for what that rate is actually applied to.
Owner-Occupied Classification
South Dakota allows each property owner to claim one property statewide as their owner-occupied residence, which reduces the school general fund mill levy on that property compared to non-owner-occupied homes, second homes, and rentals. You only need to apply once, and the classification carries forward automatically as long as you keep living there. Because the exact statewide savings vary by school district, this calculator doesn’t apply a specific dollar adjustment for it, but it’s worth confirming with your county Director of Equalization once you’ve identified a specific property.
Property Tax Relief for Elderly and Disabled Homeowners
South Dakota offers an assessment freeze program for qualifying homeowners who are elderly or disabled, which locks in your home’s assessed value so future increases in market value don’t automatically raise your tax bill. For the current program year, eligibility generally requires household income under roughly $56,595 for a single-member household or $66,885 for a multiple-member household, with a full-and-true value limit around $514,500 unless you were already enrolled at a higher value. These figures are set annually, so confirm the current thresholds with the SD Department of Revenue before relying on them.
South Dakota’s Real Estate Transfer Fee
South Dakota charges a real estate transfer fee of $0.50 for every $500 of a property’s sale price, an effective rate of about 0.1%, one of the lowest transfer costs of any state that charges one at all. It’s typically paid by the grantor, meaning the seller, at closing. Most residential closings in South Dakota go through a title company rather than requiring an attorney, which also tends to keep overall closing costs moderate.
Frequently Asked Questions
Does South Dakota have a state income tax?
No. South Dakota is one of a small number of states with no state income tax, which is part of why property tax rates here run a bit above the national average.
Why do South Dakota property tax rates vary so much by county?
Each of South Dakota’s 66 counties sets its own levies to fund schools, county government, and local services, producing effective rates that range from under 0.5% to over 1.8% depending on the county.
What is South Dakota’s owner-occupied classification?
A one-time application that reduces the school general fund mill levy on the one property you claim as your primary residence statewide. It’s not automatic, and the exact savings vary by school district.
Is there property tax relief for seniors in South Dakota?
Yes. South Dakota offers an assessment freeze for qualifying elderly or disabled homeowners that locks in your assessed value, subject to household income and home value limits set annually by the state.
What is South Dakota’s real estate transfer fee?
A statewide fee of $0.50 per $500 of the sale price, about 0.1%, typically paid by the seller. It’s one of the lowest real estate transfer costs of any state that charges one.
How accurate is this mortgage calculator with taxes and insurance?
The principal and interest math is exact. County tax figures reflect published effective rates, while insurance and PMI are market-based estimates that may vary once a lender underwrites your loan.
Should I choose a 15-year or 30-year mortgage in South Dakota?
A 15-year term carries a lower rate and less total interest but a higher payment. A 30-year term keeps payments lower and more flexible, which is why most buyers choose it.
What down payment do I need to buy a home in South Dakota?
Conventional loans often start around 3 to 5% down, FHA loans typically require 3.5%, and VA loans can allow 0% down for eligible veterans.
Does this calculator include South Dakota’s real estate transfer fee or closing costs?
No. This tool focuses on your ongoing monthly payment. The transfer fee and other closing costs are separate, one-time expenses due at signing.
References
- South Dakota Department of Revenue, Property Tax – dor.sd.gov/individuals/taxes/property-tax
- Consumer Financial Protection Bureau, Owning a Home resources – consumerfinance.gov/owning-a-home
- U.S. Department of Housing and Urban Development, homebuying guidance – hud.gov/topics/buying_a_home
Related State Mortgage Calculators
Comparing South Dakota against neighboring or similarly-structured markets? These calculators use the same real tax-data approach:
Related DexoCalc Tools
This South Dakota mortgage calculator sits inside a wider set of financial planning tools on DexoCalc.
This calculator provides estimates for educational purposes only and is not a loan offer, pre-approval, or substitute for advice from a licensed mortgage professional. County tax rates, program eligibility figures, and transfer fee figures reflect published rates and law at time of writing and can change; confirm exact current figures with your county Director of Equalization, the SD Department of Revenue, and your insurance provider. Sources: SD Department of Revenue, CFPB.