Current auto loan rates in Willow Lake, South Dakota include Service First Federal Credit UnionService First Federal Credit UnionA+5.0 ★Texas Ratio: 4.60% offering New Vehicles (2023 & Newer) - 6-48 months Loan at 4.15%, Siouxland Federal Credit UnionSiouxland Federal Credit UnionA+5.0 ★Texas Ratio: 2.24% offering 2019-2022 Vehicles, Motorcycles & Boats Loan at 4.75%, Fort Randall Federal Credit UnionFort Randall Federal Credit UnionA+5.0 ★Texas Ratio: 3.26% offering Auto Loan - 2021 NEW - 48 Months at 4.75%, East River Federal Credit UnionEast River Federal Credit UnionA+5.0 ★Texas Ratio: 4.82% offering Auto Loans (2022 - 2020) 1 - 36 Months at 4.90%, Lakota Federal Credit UnionLakota Federal Credit UnionA+5.0 ★Texas Ratio: 1.21% offering Used Vehicles - 24 Months Loan at 5.54%. Auto loan rates as of September 9, 2026 according to verified data from MonitorBankRates.
Willow Lake borrowers have access to 7 lenders serving the South Dakota area, with auto loan rates as low as 4.15% APR from Service First Federal Credit Union. Use the tabs below to compare new and used auto loan rates. Rates are continually updated, so we recommend checking back frequently.
Auto loan rates reflect recent market quotes and representative offers available to borrowers in Willow Lake, South Dakota. Auto Loan Rates Last Updated and Verified: September 9, 2026
Rates marked with *; APR range: 4.75% - 10.00%
Rates marked with *; APR range: 4.75% - 10.00%
Credit Score: 750 - Above
Credit Score: 750 - Above
Credit Score: 750 - Above
As Low As*
As Low As*
As Low As*
Credit Grade: A+ (700+)
As Low As*
Credit Tier 760>
Credit Tier 760>
Credit Score: 700-749
Credit Score: 700-749
over $20,000; Term: 72 Months (over $20,000); Credit Score: 750 - Above
Credit Score: 700-749
Credit Grade: A+
Credit Tier 760>
Credit Grade: A (699-675)
Credit Tier 760>
Credit Tier 760>
As Low As*
Credit Grade: A+ (700+)
Individual rate is determined by credit scores, subject to loan approval. $10,000 loan at 5.95% APR (annual percentage rate) for a 72 month term with 0% down, monthly payments are $165. Payment calculation is only an estimate, please speak with a loan officer for exact figures.
Credit Grade: A+ (700+)
Credit Grade: A+
Credit Grade: A
As Low As*
Credit Grade: A+
Credit Grade: A+ (700+)
Credit Grade: A (699-675)
Credit Grade: A+
Credit Tier 760>
Credit Grade: A (699-675)
Credit Grade: A
Credit Grade: A
Credit Grade: A (699-675)
Credit Grade: A
As Low As*
Credit Score: 750 - Above
Credit Score: 750 - Above
Credit Score: 750 - Above
over $20,000; Term: 72 Months (over $20,000); Credit Score: 700-749
over $30,000; Term: 84 Months (over $30,000); Credit Score: 750 - Above
Credit Grade: A+
Rates marked with *; APR range: 7.00% - 12.25%
Credit Grade: A
2018 and Older; Credit Tier 760+
2018 and Older; Credit Tier 760+
Credit Score: 700-749
Credit Score: 700-749
Credit Score: 700-749
Credit Score: 650-699
Credit Score: 650-699
over $30,000; Term: 84 Months (over $30,000); Credit Score: 700-749
Credit Score: 650-699
Credit Grade: A+
Rates marked with *; APR range: 8.25% - 13.50%
Credit Grade: A+
Credit Grade: A
Credit Grade: A
over $20,000; Term: 72 Months (over $20,000); Credit Score: 650-699
Credit Grade: B (674-621)
Credit Grade: B (674-621)
Credit Grade: B (674-621)
Credit Score: 750 - Above
Credit Score: 650-699
Credit Score: 650-699
Credit Score: 650-699
over $30,000; Term: 84 Months (over $30,000); Credit Score: 650-699
Credit Grade: B (674-621)
Credit Score: 750 - Above
Credit Score: 700-749
Credit Grade: B
Credit Score: 700-749
Credit Score: 600-649
Credit Grade: B
Credit Grade: B
Credit Score: 600-649
Credit Grade: B
Credit Grade: C (620-500)
Credit Score: 600-649
Credit Grade: C (620-500)
Credit Grade: B
Credit Grade: B
Credit Grade: C (620-500)
Credit Grade: C (620-500)
Credit Score: 650-699
over $20,000; Term: 72 Months (over $20,000); Credit Score: 600-649
Credit Grade: B
Credit Grade: C
Credit Score: 650-699
Credit Score: 600-649
Credit Grade: C
Credit Grade: C
Credit Grade: C
Credit Score: 600-649
over $30,000; Term: 84 Months (over $30,000); Credit Score: 600-649
Credit Grade: C
Credit Grade: C
Credit Score: 600-649
Credit Grade: C
Credit Score: 599-Under
Credit Score: 600-649
Credit Score: 599-Under
Credit Score: 599-Under
Credit Score: 600-649
over $20,000; Term: 72 Months (over $20,000); Credit Score: 599-Under
Credit Score: 599-Under
Credit Score: 599-Under
over $30,000; Term: 84 Months (over $30,000); Credit Score: 599-Under
Credit Score: 599-Under
Credit Score: 599-Under
Credit Score: 599-Under
Rates marked with *; APR range: 4.75% - 10.00%
Credit Score: 750 - Above
Credit Score: 750 - Above
Credit Score: 750 - Above
Credit Score: 700-749
Credit Score: 700-749
over $20,000; Term: 72 Months (over $20,000); Credit Score: 750 - Above
Credit Score: 700-749
over $20,000; Term: 72 Months (over $20,000); Credit Score: 700-749
over $30,000; Term: 84 Months (over $30,000); Credit Score: 750 - Above
Credit Score: 650-699
Credit Score: 650-699
over $30,000; Term: 84 Months (over $30,000); Credit Score: 700-749
Credit Score: 650-699
over $20,000; Term: 72 Months (over $20,000); Credit Score: 650-699
over $30,000; Term: 84 Months (over $30,000); Credit Score: 650-699
Credit Score: 600-649
Credit Score: 600-649
Credit Score: 600-649
over $20,000; Term: 72 Months (over $20,000); Credit Score: 600-649
over $30,000; Term: 84 Months (over $30,000); Credit Score: 600-649
Credit Score: 599-Under
Credit Score: 599-Under
Credit Score: 599-Under
over $20,000; Term: 72 Months (over $20,000); Credit Score: 599-Under
over $30,000; Term: 84 Months (over $30,000); Credit Score: 599-Under
Credit Grade: A+ (700+)
Credit Grade: A+
Credit Grade: A (699-675)
Credit Grade: A+ (700+)
Credit Grade: A+ (700+)
Credit Grade: A+
Credit Grade: A
Credit Grade: A+
Credit Grade: A+ (700+)
Credit Grade: A (699-675)
Credit Grade: A+
Credit Grade: A (699-675)
Credit Grade: A
Credit Grade: A
Credit Grade: A (699-675)
Credit Grade: A
Credit Grade: A+
Credit Grade: A
Credit Grade: A+
Credit Grade: A+
Credit Grade: A
Credit Grade: A
Credit Grade: B (674-621)
Credit Grade: B (674-621)
Credit Grade: B (674-621)
Credit Grade: B (674-621)
Credit Grade: B
Credit Grade: B
Credit Grade: B
Credit Grade: B
Credit Grade: C (620-500)
Credit Grade: C (620-500)
Credit Grade: B
Credit Grade: B
Credit Grade: C (620-500)
Credit Grade: C (620-500)
Credit Grade: B
Credit Grade: C
Credit Grade: C
Credit Grade: C
Credit Grade: C
Credit Grade: C
Credit Grade: C
Credit Grade: C
Compare local Willow Lake, SD auto loan rates against the statewide average
Daily auto loan rate averages tracked across our database of 8,500+ banks and credit unions, updated every evening.
South Dakota new auto loan rates currently average 7.275% APR.
South Dakota used auto loan rates currently average 8.720% APR.
Auto loan APRs track lender funding costs, which follow Federal Reserve policy. Our model projects the likely path of new and used auto averages from the current South Dakota figures.
Key assumptions: the Federal Reserve holds the federal funds rate at its current level over the next 12 months, with the possibility of one 25 basis point increase; auto lenders reprice within one to two policy cycles as funding costs move, and credit union pricing tends to lag banks slightly.
Important notice: this forecast is for informational purposes only and should not be used as the sole basis for financial decisions. Rate forecasts carry significant uncertainty. The actual trajectory will depend on Federal Reserve decisions, economic conditions, and competitive dynamics among financial institutions.
Estimated monthly payments on a standard 60-month auto loan at today’s average South Dakota APRs. Even a small APR difference adds up over the life of a car loan. Use the calculator below to model your exact loan.
| Loan Amount | New Auto @ 7.28% APR SD average | Used Auto @ 8.72% APR SD average | Monthly Difference |
|---|---|---|---|
| $15,000 | $298.97/mo | $309.34/mo | $10.37/mo |
| $25,000 | $498.28/mo | $515.57/mo | $17.29/mo |
| $35,000 | $697.59/mo | $721.80/mo | $24.20/mo |
| $45,000 | $896.91/mo | $928.02/mo | $31.12/mo |
Principal and interest only, 60-month term, calculated from current average APRs. Taxes, title, registration, and optional add-ons are not included. Your APR depends on credit score, loan term, vehicle age, and lender underwriting.
A preapproval from a bank or credit union serving Willow Lake, South Dakota locks in a real rate before you set foot on a dealer lot. It turns you into a cash buyer, gives you a benchmark to beat, and protects you from dealer financing markups. Dealers can legally add points to the rate a lender actually approved you for.
Credit unions consistently offer some of the lowest auto loan APRs in South Dakota. Membership is usually easier to get than people expect. Many local credit unions accept anyone who lives, works, or worships in the area, and some let you join with a small donation to a partner charity.
Shorter terms almost always carry lower APRs, and you pay interest for fewer months. A 72- or 84-month loan lowers the monthly payment but dramatically raises total interest cost and increases the time you spend “underwater”, owing more than the car is worth. Aim for 60 months or less if the payment fits your budget.
Used car loans typically run 0.5 to 1.5 percentage points above new car rates. If you’re shopping late-model used vehicles, ask about certified pre-owned programs. CPO vehicles sometimes qualify for new-car financing rates, which can offset part of the price difference between the two.
Local demographics and economic context for car buyers. Source: U.S. Census Bureau (state-level data shown; city data not available)
A $598 monthly car payment works out to roughly 16.5% of the median individual income in South Dakota. Most budgeting guidelines suggest keeping total vehicle costs (payment, insurance, fuel, and maintenance) under 15–20% of take-home pay.
An auto loan isn’t the only way to finance a vehicle in Willow Lake, South Dakota, but for most borrowers it’s the cheapest. Here’s how the main options stack up.
| Feature | Credit Union Auto Loan | Bank Auto Loan | Dealer Financing | Personal Loan |
|---|---|---|---|---|
| Typical APR Level | ✓ Often lowest | ✓ Competitive | ● Varies, can be marked up | ✗ Highest (unsecured) |
| Rate Locked Before You Shop | ✓ Yes, via preapproval | ✓ Yes, via preapproval | ✗ Arranged at the dealership | ✓ Yes |
| Membership / Relationship Required | ● Membership (usually easy) | ✗ No | ✗ No | ✗ No |
| Works for Private-Party Sales | ✓ Usually | ● Sometimes | ✗ No | ✓ Yes |
| Convenience at Purchase | ● Preapproval step first | ● Preapproval step first | ✓ One-stop at the dealer | ● Funds in 1–3 days |
| Best For | Lowest total cost of borrowing | Existing bank customers & rate discounts | Manufacturer 0% promos on new cars | Older vehicles lenders won’t finance |
General comparison for educational purposes. Manufacturer promotional financing (0–2.9% APR offers) through dealers can beat any bank or credit union rate when you qualify. Always compare the promo against a cash rebate plus outside financing.
Estimate your monthly payment on a new or used vehicle in Willow Lake, South Dakota. We’ve prefilled the APR with today’s SD new-auto average, or click any current rate on the right to apply it instantly.
Estimates include principal and interest only. Sales tax, title, registration, documentation fees, and optional products (GAP, warranties) are not included and are often financed into the loan. Advertised APRs typically require excellent credit; your rate may differ.
Independent, Free, and Unbiased Rate Comparisons: MonitorBankRates.com is an independent rate comparison service. Our Willow Lake, South Dakota auto loan rate tables are free for consumers to use, and we do not receive payment from any lender to be included or to be ranked in any particular order. Listings are based solely on the rates each lender publicly advertises on its own website.
A Note on Third-Party Rate Tools: Some pages on our site also feature rate comparison widgets and tools provided by third-party partners. These tools may include sponsored listings or affiliate links, and we may receive compensation when users click through them. We clearly label these widgets so you can tell at a glance which rates come from our independent MonitorBankRates.com tables and which come from our advertising partners.
Direct-Sourced & Verified Auto Loan Rate Data: We aggregate new and used auto loan rates for Willow Lake, South Dakota directly from the official websites of banks, credit unions, and online lenders using our proprietary rate aggregation technology and a dedicated team of rate updaters. By sourcing data from the lenders’ own digital properties and verifying APRs regularly, every rate on MonitorBankRates.com is highly accurate and trustworthy.
Local, Regional, and National Coverage: Our systems constantly monitor the market to provide a complete picture of available auto loan products in Willow Lake, South Dakota. We feature a comprehensive mix of lenders, from neighborhood credit unions and competitive regional banks to large national auto lenders available to borrowers in SD.
Regularly Updated APRs: Our rate updaters verify and update auto loan rates regularly. Because APRs can change based on market conditions and lender policies, every product features its own “last updated” date for full transparency. Auto loan APRs shown typically represent the lowest available rate for borrowers with excellent credit; your actual rate will depend on your credit history, credit score, income, loan term, vehicle age, and other underwriting factors.