1
Editor's pick
Reviewed today
- APR
- 6.94–14.94%
- Min. credit score
- 660+
- Loan amount
- $5K–$100K
- Loan length
- 24–84 mo
Auto loans · SD
#9 Lowest APR · 50 States + D.C.
South Dakota auto loans: 6.9% APR
South Dakota is the 9th lowest-APR state across 50 states + D.C. for new-car loans (60-mo, 720+ FICO, Q4 2025). Live APRs from nationally-licensed lenders, plus the SD sales-tax and registration math most dealers won't show you.
What's different about auto loans here · South Dakota
South Dakota motor vehicle excise tax is a flat 4%.
4%
South Dakota sales tax
South Dakota motor vehicle excise tax is a flat 4%.
6.9%
South Dakota avg APR
↓ 0.4 pts below national avg (7.3%)
60-mo new-car loan, 720+ FICO. Experian Q4 2025.
$36,400
$35k car · all-in
Total cost after South Dakota sales tax on a $35,000 vehicle (before fees / financing).
SD Borrower Tip
South Dakota sits at or below the national APR average.
Local credit-union density and bank competition keep SD APRs at 6.9% — 0.4 points below the 7.3% national average. If you're financing soon, pre-qualify with 2–3 lenders BEFORE you visit the dealer to lock in a rate the F&I office will have to beat.
SD buying & financing rules
Tax + fee math for South Dakota buyers
National lenders quote you the same APR off your FICO + LTV no matter what state you live in — but state-level sales tax, trade-in credit rules, and doc-fee caps shift your out-the-door price by hundreds (sometimes thousands) of dollars. Here's what changes when you buy in South Dakota.
Trade-in tax credit
Full trade-in credit
Doc-fee cap
uncapped (market)
State sales tax
4%
Trade-in rule detail
South Dakota charges a 4% motor-vehicle excise tax on the price minus trade-in value.
SD consumer-finance APR ceiling
South Dakota has no general consumer-finance usury cap for licensed lenders — among the most lender-friendly states.
- 4% motor-vehicle excise tax (separate from general 4.5% sales tax)
- Trade-in fully credited against the basis
- No general consumer-credit usury cap
Sales-tax and doc-fee rules are subject to legislative change — confirm specifics with your dealer at signing and with the SD regulator listed below.
Advertiser disclosure: Offers below are from partners that compensate us when you click or apply. Compensation does not determine our rankings. How we make money.
Rates as of Jun 30, 2026
Auto loan lenders in South Dakota.
National lenders, soft pull, no spam. Click a row to expand our editorial review.
Comparing 5 audited options· Rates verified Jun 30
Data last reviewed . Source: CarSavr editorial methodology.
Editor's pick · 2-min compare
LightStream
Starting APR 6.94–14.94%
5 lenders shown, sorted by default editor's pick order.
Compare 4+ lenders in one form
Pre-qualify with multiple lenders — soft pull only
4 offers · 2 minutes · won't ding your credit
| Lender | Loan amount | Loan length | ||||
|---|---|---|---|---|---|---|
1 | 6.94–14.94% Total int. ~$4,659 · $25k · 60mo | 660+ | $5K–$100K | 24–84 mo | Reviewed today | |
2  Best marketplace | 5.69–17.99% Total int. ~$3,783 · $25k · 60mo | 580+ | $5K–$100K | 24–84 mo | Reviewed today | ≈2 min · Soft pullAffiliate offer |
3  Best credit union | 5.24–17.99% Total int. ~$3,472 · $25k · 60mo | 610+ | $500–$150K | 36–84 mo | Reviewed today | |
 Fastest marketplace · 4 offers in minutes | 5.99–22.99% Total int. ~$3,992 · $25k · 60mo | 575+ | $8K–$100K | 24–84 mo | Reviewed today | ≈2 min · Soft pullAffiliate offer |
 Best soft-pull pre-qual | 6.99–22.90% Total int. ~$4,695 · $25k · 60mo | 540+ | $4K–$75K | 36–75 mo | Reviewed today |
2
Reviewed today
- APR
- 5.69–17.99%
- Min. credit score
- 580+
- Loan amount
- $5K–$100K
- Loan length
- 24–84 mo
≈2 min · Soft pullAffiliate offer
3
Reviewed today
- APR
- 5.24–17.99%
- Min. credit score
- 610+
- Loan amount
- $500–$150K
- Loan length
- 36–84 mo
Reviewed today
- APR
- 5.99–22.99%
- Min. credit score
- 575+
- Loan amount
- $8K–$100K
- Loan length
- 24–84 mo
≈2 min · Soft pullAffiliate offer
Reviewed today
- APR
- 6.99–22.90%
- Min. credit score
- 540+
- Loan amount
- $4K–$75K
- Loan length
- 36–75 mo
APR ranges are sourced from each lender's public site and are updated regularly. Your actual rate depends on credit history, loan amount, vehicle, and state. CarSavr may earn a commission when you apply through our links — it never affects how we rank lenders.
Provider logos and trademarks belong to their respective owners and are used for identification purposes only. Providers shown for comparison and educational purposes — display does not imply partnership unless an active affiliate relationship is stated separately.
How rows are ranked: Editor's pick first, then by overall rating. Promoted placements are flagged with a Sponsored badge. Read the full methodology →
South Dakota vs. neighboring states
National lenders quote off FICO + LTV, not state — but local credit-union density and dealer mix can shift the effective best APR. Here's how South Dakota's 4 closest neighbors compare.
Other SD car-savings surfaces
Why auto-loan math looks different in South Dakota
National lenders price your auto loan APR off FICO + LTV — the same number a borrower in South Dakota qualifies for as a borrower in any other state. Where South Dakota actually changes your math is everywhere around the APR: the 4% sales-tax line on the buyer's order, SD doc-fee practice, and whether your trade-in offsets the taxable basis. Those three line items routinely add or subtract $1,200-$2,400 from the out-the-door price on a $35,000 vehicle — easily eclipsing a quarter-point APR difference between lenders.
South Dakota sits at 6.9% average APR (9th lowest-APR across 50 states + D.C.) on a 60-month new-car loan for a 720+ FICO borrower. That national-average gap of 0.4 points below the 7.3% benchmark is mostly a function of two state-level structural forces: local credit-union density (which holds the floor down) and dealer-finance market share (which pushes the F&I-office ceiling up). Both shift the APR a SD buyer actually sees, even though the published rate sheets are national.
Four buyer mistakes South Dakota drivers make routinely:
- Letting the dealer F&I office quote first. Walk in with a pre-approval from your bank or credit union — the dealer rate must then beat it on paper to win the deal.
- Stretching to 84 months for a lower monthly. You'll spend an extra ~$2,800 in interest on a $30k loan vs. 60 months at the same APR — and South Dakota drivers stay underwater on the loan an average of 14 months longer.
- Skipping the SD dealer doc-fee line. Doc fees vary by hundreds of dollars across South Dakota dealerships. SD caps doc fees at uncapped (market) — anything above is negotiable.
- Accepting the F&I add-on stack. Extended warranty, GAP, paint/fabric, and tire-and-wheel can pile $3k+ onto the financed amount. Each is shoppable separately; most are 30-50% cheaper outside the dealership.
The bottom line for South Dakota buyers: an extra hour of rate shopping before you walk into the dealership routinely saves $1,500–$2,500 over the loan life, even when the published APR spread between lenders looks small. Pre-qualify with 2–3 lenders, run a sales-tax calculation against the 4% SD rate, and walk in knowing your out-the-door ceiling before the F&I office gets the first word.
Frequently asked questions
South Dakota auto loan FAQ
South Dakota finance regulator
South Dakota Division of Banking
Auto-finance lenders and motor-vehicle dealers operating in South Dakota are licensed under the South Dakota Division of Banking. CarSavr cross-references each lender's published APR ranges against state DOI filings + the National Automobile Dealers Association (NADA) state-tax matrix.
Need to file a complaint, look up a lender's license, or verify a doc-fee dispute? CSBS: state regulator directory →
Neighboring states
Compare auto loan rates in nearby states.
Bordering states often share carrier mix and pricing patterns — useful if you're moving, work across state lines, or want to anchor your own state's number against a peer benchmark.