The South Dakota mortgage refinance calculator estimate for a typical South Dakota refinance of $206,000, moving from a 7.733% rate with 27 years left to today's MonitorBankRates national average 30 year rate of 6.983%, is a monthly savings of about $149, with $5,200 in closing costs paid back in about 35 months, verified by MonitorBankRates as of September 24, 2026.
This calculator starts from South Dakota numbers: the new loan rate is today's MonitorBankRates South Dakota average, the balance is the typical South Dakota refinance, and closing costs are set at 2.5% of that balance. Enter your own loan, then click a verified lender rate in the panel below the calculator to see the savings at that offer.
South Dakota Refinance Analysis
Compare your current loan with a new loan at a South Dakota rate. Results update as you type.
Cumulative cost: current loan vs. new loan
Cash paid over time including closing costs up front. The new loan starts higher because of closing costs and pulls ahead at the break even point. Cash out is excluded from both lines so the comparison is apples to apples.
Side by side
| Comparison | Current Loan | New Loan | Difference |
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Current South Dakota Average Refinance Rates
Today's MonitorBankRates South Dakota averages first, then the lowest verified offer per loan type from lenders serving South Dakota. Click any rate to use it as the new loan rate.
30 Year Refinance Offers in South Dakota and the Savings on a Typical Loan
New payment and monthly savings on the typical South Dakota refinance ($206,000 balance, currently at 7.733% with 27 years left) at each lender's current 30 year fixed rate. Refinance-labeled products are listed first; most lenders price refinances from the same sheet as purchases.
- Wells Fargo30-Year Fixed-Rate VA, APR 6.998% 6.750%$1,336 a month, saves $181
Compare every loan type, local banks and credit unions first, on the South Dakota refinance rates page.
View Your South Dakota Refinance Rate
Enter your loan details to see personalized refinance quotes from lenders serving South Dakota.
Does Refinancing Pay Off in South Dakota Right Now?
| Typical South Dakota refinance: $206,000, 27 years left at 7.733%, new 30 year loan at the MonitorBankRates South Dakota average of 6.983% | Amount |
|---|---|
| Current monthly principal and interest | $1,517 |
| New monthly principal and interest | $1,368 |
| Monthly savings | $149 |
| Break even on $5,200 closing costs | 35 months |
| Interest left on the current loan | $285,430 |
| Interest on the new 30 year loan | $286,542 |
| New payment on a 15 year loan at 6.562% | $1,802 |
Refinancing into a fresh 30 year term lowers the payment by $149 a month but adds three years of payments, so the interest comparison is $285,430 left on the current loan against $286,542 on the new one, which means the new loan costs more over its life despite the lower payment. Refinancing the same balance into a 15 year loan at the South Dakota average of 6.562% raises the payment to $1,802 but cuts lifetime interest to about $118,272. The usual rule of thumb is that a refinance is worth pricing when today's rate is at least half a point to three quarters of a point below your current rate and you plan to stay past the break even point.
Rates change daily. Every figure on this page is recalculated when it loads from the current MonitorBankRates South Dakota average.
How Much a Rate Drop Saves on a South Dakota Refinance
Monthly savings and break even for a $206,000 balance with 27 years left, refinanced into a new 30 year loan at today's MonitorBankRates South Dakota average of 6.983%, with $5,200 in closing costs. Lifetime savings compare interest left on the current loan with interest on the new loan plus closing costs.
| Your current rate | Rate drop | Current P&I | Monthly savings | Break even | Lifetime savings |
|---|---|---|---|---|---|
| 7.233% | 0.25 points | $1,448 | $80 | 65 months | minus $28,481 |
| 7.483% | 0.50 points | $1,482 | $114 | 46 months | minus $17,449 |
| 7.733% | 0.75 points | $1,517 | $149 | 35 months | minus $6,312 |
| 7.983% | 1.00 points | $1,551 | $183 | 29 months | $4,927 |
| 8.483% | 1.50 points | $1,622 | $254 | 21 months | $27,701 |
| 8.983% | 2.00 points | $1,693 | $325 | 16 months | $50,851 |
Refinance Savings by Loan Balance in South Dakota
From 7.733% with 27 years left to a new 30 year loan at the MonitorBankRates South Dakota average of 6.983%. Closing costs are set at 2.5% of each balance.
| Balance | Current P&I | New P&I | Monthly savings | Closing costs | Break even |
|---|---|---|---|---|---|
| $100,000 | $736 | $664 | $72 | $2,500 | 35 months |
| $150,000 | $1,104 | $996 | $108 | $3,800 | 36 months |
| $200,000 (typical) | $1,473 | $1,328 | $144 | $5,000 | 35 months |
| $300,000 | $2,209 | $1,992 | $216 | $7,500 | 35 months |
| $400,000 | $2,945 | $2,657 | $289 | $10,000 | 35 months |
Refinance Savings in South Dakota's Largest Cities
A typical refinance in each city: a balance of 80% of the city's median home value, currently at 7.733% with 27 years left, refinanced into a new 30 year loan at the MonitorBankRates South Dakota average of 6.983%, with closing costs at 2.5% of the balance. Open a city's rates page for verified lender offers.
| City | Median home | Typical balance | Monthly savings | Break even |
|---|---|---|---|---|
| Sioux Falls refinance rates | $292,400 | $234,000 | $169 | 35 months |
| Rapid City refinance rates | $299,400 | $240,000 | $173 | 35 months |
| Aberdeen refinance rates | $217,300 | $174,000 | $126 | 36 months |
| Brookings refinance rates | $265,500 | $212,000 | $153 | 35 months |
| Watertown refinance rates | $229,400 | $184,000 | $133 | 35 months |
| Mitchell refinance rates | $192,200 | $154,000 | $111 | 36 months |
| Yankton refinance rates | $222,700 | $178,000 | $128 | 36 months |
| Huron refinance rates | $159,000 | $127,000 | $92 | 35 months |
| Pierre refinance rates | $230,700 | $185,000 | $133 | 35 months |
| Spearfish refinance rates | $346,200 | $277,000 | $200 | 35 months |
For example, a Sioux Falls homeowner with a $234,000 balance at 7.733% would save about $169 a month at today's South Dakota average. Your own rate, balance and remaining term decide whether a refinance pays off, so run the calculator with your loan's numbers.
The South Dakota Refinance Market
Refinance pricing versus purchase pricing. Across 11 lenders that publish separate purchase and refinance rates nationally, the refinance rate runs about 0.057 points above the same lender's purchase rate. The rates in the tables above are as published; this premium is context, not an adjustment.
Closing costs in South Dakota. Refinance closing costs typically run 2% to 5% of the loan, which on the typical South Dakota refinance of $206,000 is $4,100 to $10,300. The largest items are the lender's origination fee, the appraisal, title insurance and recording charges, plus prepaid interest and escrow deposits. A no closing cost refinance shifts those charges into a higher rate, so run both versions through the calculator before choosing.
Home values and equity. The median South Dakota home is worth about $257,400, and the state scores 112.3 on the MBR Housing Affordability Index (rank 16 of 51, 100 is the national average). Most conventional refinances need at least 20% equity to avoid private mortgage insurance; if your balance is under 80% of your home's current value, a rate and term refinance at today's South Dakota average usually qualifies without PMI. See the South Dakota housing affordability page for the full picture.
How to Use the South Dakota Refinance Calculator
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Enter your current loan
Type in your balance, your rate and the years you have left, from your most recent statement. If the statement shows the principal and interest payment, enter it and the calculator uses it instead of recomputing.
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Pick the new South Dakota rate
The new rate starts at today's MonitorBankRates South Dakota average. Click a verified lender offer in the rate panel to test that rate and term, or type the rate you were quoted. Choose 15, 20 or 30 years.
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Set the closing costs
The default is 2.5% of your balance. Replace it with the figure on your Loan Estimate. Check the box to roll the costs into the loan if you would rather not pay them at closing; the calculator then charges interest on them like the rest of the balance.
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Read the verdict
The calculator shows monthly savings, the break even point, lifetime interest saved and what happens if you keep paying your current amount on the new loan, which is how most people capture a lower rate without restarting the clock.
Frequently Asked Questions About Refinancing in South Dakota
What is the average refinance rate in South Dakota today?
The MonitorBankRates national average for a 30 year fixed mortgage is 6.983% as of September 24, 2026, and the 15 year average is 6.562%. Most lenders price refinances from the same rate sheet as purchase loans, though among lenders that publish separate refinance pricing nationally the refinance rate averages 0.057 points higher. Individual lenders vary above and below the average, so compare offers on the South Dakota refinance rates page.
How much can I save by refinancing in South Dakota?
On the typical South Dakota refinance of $206,000 with 27 years left at 7.733%, a new 30 year loan at today's MonitorBankRates South Dakota average of 6.983% cuts the payment from about $1,517 to $1,368, a saving of $149 a month. With $5,200 in closing costs the break even point is about 35 months. Savings scale with the balance and the size of the rate drop; the tables above show both.
How much does it cost to refinance a mortgage in South Dakota?
Refinance closing costs typically run 2% to 5% of the loan amount. On the typical South Dakota refinance of $206,000 that is roughly $4,100 to $10,300, covering the origination fee, appraisal, title insurance, recording charges and prepaid escrow items. Lenders that advertise no closing cost refinances recover those costs through a higher rate.
When does refinancing make sense in South Dakota?
Refinancing usually makes sense when today's rate is at least 0.5 to 0.75 points below your current rate, you plan to stay in the home past the break even point, and you are not stretching a nearly paid off loan back to 30 years. At today's MonitorBankRates South Dakota average of 6.983%, that means current rates of about 7.483% and above are worth pricing. Switching from an adjustable rate to a fixed rate, or dropping PMI after building 20% equity, can justify a refinance even with a smaller rate drop.
What is a break even point and how do I read it?
The break even point is the number of months you must keep the new loan before your monthly savings cover the closing costs. If closing costs are $5,200 and you save $149 a month, the break even is 35 months. After that point every additional month is savings; sell or refinance again before it and the refinance cost you money.
Should I refinance to a 15 year or a 30 year loan?
A 15 year loan carries a lower rate (6.562% in South Dakota today versus 6.983% for 30 years) and far less lifetime interest, but the payment is much higher: about $1,802 versus $1,368 on the typical South Dakota refinance. Choose the 15 year if that payment fits comfortably. Otherwise take the 30 year and keep paying your current amount; the calculator shows how many years that shaves off.
How much equity do I need to refinance in South Dakota?
Most conventional lenders want at least 20% equity to refinance without private mortgage insurance, meaning a balance under 80% of the home's appraised value. With the median South Dakota home worth about $257,400, that is a balance under roughly $205,920 on a median priced home. You can often refinance with less equity, but PMI is added to the payment. FHA streamline and VA IRRRL programs have more lenient requirements for qualifying borrowers.
Does refinancing reset my loan?
Yes. A refinance pays off the old loan and starts a new amortization schedule. Refinancing 27 remaining years into a new 30 year loan adds three years of payments, which is why the calculator compares lifetime interest, not just the monthly payment, and shows the keep your current payment scenario that avoids extending the payoff date.
Refinance Calculators for Other States
Each state page starts from that state's average rate, typical refinance balance and closing costs. The national refinance calculator covers the U.S. averages.
