South Dakota Mortgage Refinance Calculator

South Dakota has no state income tax and no mortgage recording tax, making it one of the lowest-cost refinancing environments in the country. The state uses a deed of trust system and non-attorney closings, keeping transaction costs lean. Sioux Falls and Rapid City have both experienced strong population growth and home price appreciation, increasing refinance activity across the state.

Sample Refinance Scenario — South Dakota

Home Value$265,000

Loan Amount$212,000

Rate Drop1.0%

Monthly Savings~$140/mo

Est. Closing Costs~$5,000

Break-Even~36 months

Refinance Closing Costs in South Dakota

Cost Item	Typical Range	Notes
Lender Origination Fee	$800 – $2,100	~1% of loan; negotiable
Appraisal	$400 – $550	Required for most refinances
Title Insurance	$450 – $800	Lender's policy required
Recording Fees	$30 – $60	County charge; no state mortgage tax
Title Search / Exam	$200 – $400	Varies by county
Prepaid Interest / Escrow	$400 – $900	Varies by closing date
Estimated Total	$3,200 – $5,300	On a $212,000 loan (~1.5%–2.5%)

South Dakota Refinance Highlights

Factor	Detail	Status
Attorney Required at Closing	No — title company or escrow closes	No Attorney Required
Mortgage Instrument	Mortgage (judicial foreclosure state)	Mortgage State
State Income Tax	None	No State Tax
Mortgage Recording Tax	None	No Extra Cost
Property Tax Rate	~1.0% effective rate — near national average	Moderate
Community Property State	No	Standard

When to Refinance in South Dakota

South Dakota's absence of a mortgage recording tax and no state income tax means more of your savings stay in your pocket. On a $212,000 loan, dropping your rate by 1% saves roughly $140/month — covering $5,000 in closing costs in about 36 months.

Sioux Falls equity: The metro has grown rapidly with financial services and healthcare expansion. Homeowners who bought in 2019–2021 have seen significant appreciation and may qualify for better rates or PMI removal.
Rapid City / Black Hills: Tourism-driven economy with strong second-home and vacation property refinancing activity. Cash-out refinances are popular for renovation and investment.
No-tax advantage: With no state income tax, South Dakota residents have more disposable income, making higher monthly savings from refinancing feel even more impactful in budgeting.
ARM to fixed: Rural homeowners who used ARMs for affordability are increasingly converting to fixed-rate loans as rates shift, taking advantage of non-attorney closing efficiency.

Frequently Asked Questions

Does South Dakota have a state income tax?

No. South Dakota has no state income tax, making it one of the most tax-friendly states in the country. This does not directly reduce mortgage costs, but it does increase the overall affordability of homeownership and means more take-home income available for mortgage payments after a refinance.

Is there a mortgage recording tax in South Dakota?

No. South Dakota does not impose a mortgage recording tax, which keeps refinance closing costs lower than states like New York or Maryland. Recording fees are minimal county charges — typically $15–$30 per document — rather than a percentage-based tax on the loan amount.

What are typical refinance closing costs in South Dakota?

Refinance closing costs in South Dakota typically run 1.5%–2.5% of the loan amount. On a $212,000 loan, expect $3,200–$5,300. Key costs include origination (~1%), appraisal ($400–$550), title insurance (~0.35%), and recording fees ($30–$60). The absence of a mortgage tax and use of non-attorney closings keep SD costs competitive.

What is the housing market like in Sioux Falls and Rapid City?

Sioux Falls has grown into one of the fastest-growing small metros in the US, driven by financial services, healthcare, and no state income tax attracting remote workers and retirees. Rapid City benefits from proximity to the Black Hills and Mount Rushmore, supporting strong tourism and healthcare sectors. Both markets have seen sustained appreciation since 2020, with median home prices rising 30–45%.

Does the South Dakota Housing Development Authority (SDHDA) offer refinance programs?

The South Dakota Housing Development Authority (SDHDA) primarily administers the Governor's House program and first-time homebuyer loans through its Fixed Rate and Governor's House products. Existing SDHDA-originated FHA loans may be eligible for FHA streamline refinances through participating lenders without a full new application. SDHDA does not operate a standalone conventional refinance program, but borrowers with existing SDHDA loans should contact SDHDA at sdhda.org or call 605-773-3181 to confirm available options. SDHDA partners with local lenders statewide — their website maintains a list of approved participating lenders who service SDHDA loans and can evaluate streamline eligibility.

How does South Dakota's lack of state income tax affect the refinance decision?

South Dakota is one of only nine states with no state income tax, which has made it a destination for retirees, remote workers, and financial services companies (several major credit card companies are headquartered in Sioux Falls). For refinancing borrowers, the absence of state income tax means more take-home income available to service mortgage payments — improving effective affordability. However, South Dakota partially compensates for the lack of income tax with higher property taxes (approximately 1.1% effective rate) and a 4.5% state sales tax. The no-income-tax environment also means the federal mortgage interest deduction is not duplicated at the state level, unlike states where itemizers can deduct interest from both federal and state returns.

What Makes South Dakota Different for Refinancing

South Dakota's no-income-tax environment, concentrated Sioux Falls market, Black Hills tourism economy, and low closing costs create a refinance environment distinct from neighboring Midwestern states. Here are the key factors South Dakota borrowers should understand.

No income tax and low closing costs make South Dakota one of the most cost-efficient refinance states. The combination of no state income tax, no mortgage recording tax, and a non-attorney closing process means South Dakota borrowers keep more income and pay lower closing costs than residents of most comparable states. On a $270,000 refinance, total closing costs typically run $4,000–$6,750 — lower than the national average — allowing borrowers to break even faster on a rate-and-term refinance.

Sioux Falls dominates the South Dakota mortgage market. Sioux Falls (Minnehaha and Lincoln counties) accounts for a disproportionate share of South Dakota's housing activity. The metro's strong banking and healthcare sectors have driven consistent in-migration, supporting home value appreciation. Borrowers outside Sioux Falls — particularly in western South Dakota (Rapid City area) and rural counties — may find fewer local lender options and should compare online lenders and credit unions alongside local banks to ensure competitive pricing.

Rapid City and Black Hills properties have tourism-economy characteristics. Rapid City sits near Mount Rushmore, Badlands National Park, and the Black Hills — making it a significant tourism and hospitality hub. Second-home and vacation-rental properties are more common in the Black Hills area than in other South Dakota markets. Lenders underwriting refinances on investment properties or second homes require different documentation and typically charge higher rates (0.25%–0.75% above primary residence pricing). If your Black Hills property is rented at all, disclose this to your lender upfront to avoid surprises during underwriting.

How to Use the Calculator for a South Dakota Loan

The RefinanceUSA calculator returns monthly P&I savings and break-even from your loan balance, current rate, new rate, and total closing costs. For a South Dakota refinance, use these inputs:

No state mortgage recording tax: South Dakota does not charge a state-level mortgage recording tax on refinances. Your closing cost estimate should reflect origination, appraisal, title insurance, and small county recording fees only.

Break-Even Example — Sioux Falls Area, $270,000 Loan

Rate Drop

0.875%

Monthly Savings

~$197

Est. Closing Costs

$4,000–$7,000

Break-Even

~36 months

Homeowners planning to stay 4+ years in the Sioux Falls area typically find a 0.875% rate drop worthwhile at this loan size.

P&I vs. total payment: The calculator produces principal-and-interest savings only. Add your monthly property tax escrow (annual bill ÷ 12) and homeowner’s insurance (÷ 12) to estimate your true total payment change. These do not change with refinancing.

For the full refinancing process, see the 10-step refinance guide. To evaluate whether your rate drop justifies the costs, see the 1% refinance rule.

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Sources & References

Disclaimer: All examples use simplified estimates for educational purposes. Actual closing costs and savings vary by lender, county, and loan profile. South Dakota mortgage rules should be verified with a licensed SD mortgage professional. RefinanceUSA is not a lender or financial advisor.