South Dakota Savings Rates - October 2026
Brian McKay
Brian McKay
Founder & Data Architect- Automated Online Rate Data Aggregation
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South Dakota savings account rates range from 0.10% to 3.50% APY, verified by MonitorBankRates as of October 13, 2026. The best savings rates for South Dakota include US BankUS Bank320 S 1st St, Aberdeen, SD 57401A+5.0 ★Texas Ratio: 2.85%Real return: +0.70%APY minus 2.8% CPI (February 2026) Bank Smartly Savings Account at 3.50% APY, SNB Security National Bank of SDSNB Security National Bank of SD325 Dakota Dunes Blvd, Dakota Dunes, SD 57049A+5.0 ★Texas Ratio: 0.00%Real return: +0.70%APY minus 2.8% CPI (February 2026) Sidekick Savings (Variable Rate) at 3.50% APY, OAB One American BankOAB One American Bank549 Broadway St, Centerville, SD 57014A5.0 ★Texas Ratio: 12.41%Real return: +0.50%APY minus 2.8% CPI (February 2026) Savings+ at 3.30% APY, Bluestone Federal Credit UnionBluestone Federal Credit Union3400 S Sycamore Ave, Sioux Falls, SD 57110 4412A+5.0 ★Texas Ratio: 3.06%Real return: +0.50%APY minus 2.8% CPI (February 2026) 12 MO VARIABLE SHARE CERT at 3.30% APY, and BankStar FinancialBankStar Financial124 Elk St, Elkton, SD 57026A+5.0 ★Texas Ratio: 1.11%Real return: +0.40%APY minus 2.8% CPI (February 2026) Future Star Savings at 3.20% APY.
Use the tables below to compare savings rates across South Dakota side-by-side. South Dakota savings rates currently reach as high as 3.50% APY from US Bank at 320 S 1st St, Aberdeen, SD 57401. Rates are continually updated, so we recommend checking back frequently.
Savings rates reflect recent market quotes and representative offers available to depositors in South Dakota and the surrounding area. Last Updated and Verified: October 13, 2026
Compare the Best Savings Rates in South Dakota
Earn up to 3.50% APY when you are an account owner of a Bank Smartly Checking, Safe Debit account, or Bank SmartlyTM Visa Signature Card and a CQB of at least $25,000. APYs may vary by location and are accurate for accounts opened on today's date. Restrictions apply.
Balance: $50,000.00+
Qualifications Required: Enroll & agree to receive Electronic Statements; Have at least one automatic deposit of $25 or more posted to the account through: A recurring transfer between BankStar accounts, An online banking transfer, An ACH/direct deposit transfer; APY on all balances when requirements are not met is 1.95%. Interest compounded and paid quarterly on average daily balance.
Balance: Over $200,000
- Sep 24, 20263.04%▲ from 2.89%
- Sep 11, 20262.89%first recorded
Annual Percentage Yield (APY) as of 10-01-2025
Qualifications Required: 1 direct deposit or ACH credit; 12 debit card purchases; e-statements enrollment; online banking enrollment/login; Balance: $0.01 to $100,000
Balance: 0 - $100,000
Balance: $25,000.00-$49,999.99
Balance: $230,000 minimum balance
Balance: $100,000.00 - $199,999.99
- Sep 24, 20262.73%▲ from 2.58%
- Sep 11, 20262.58%first recorded
Balance: $50,000.00 - $99,999.99
- Sep 24, 20262.43%▲ from 2.27%
- Sep 11, 20262.27%first recorded
Balance: $10,000.00-$24,999.99
Balance: $25,000.00 - $49,999.99
- Sep 24, 20262.12%▲ from 1.97%
- Sep 11, 20261.97%first recorded
Balance: $0.01-$9,999.99
Balance: $2,500.00 - $24,999.99
- Sep 24, 20261.82%▲ from 1.66%
- Sep 11, 20261.66%first recorded
Balance: $100,000 minimum balance
- Sep 24, 20261.51%▲ from 1.36%
- Sep 11, 20261.36%first recorded
Balance: Less Than $2,500.00
- Sep 24, 20261.51%▲ from 1.36%
- Sep 11, 20261.36%first recorded
Balance: $1,000,000 & over
- Oct 4, 20261.26%▲ from 1.01%
- Sep 14, 20261.01%first recorded
Balance: $250,000 - 499,999.99
Balance: $250,000.01 and up
- Oct 4, 20261.01%▲ from 0.75%
- Sep 14, 20260.75%first recorded
Balance: $1,000 and over
- Oct 4, 20261.01%▲ from 0.75%
- Sep 14, 20260.75%first recorded
Balance: $100,000 - 249,999.99
Balance: $20,000+
Balance: $1000+
Minimum: $2,500 minimum opening balance; Money Market Details
For children under 12 years of age
Limits: $25.00 and over; Maximum contribution $250.00 per month; Declared January 28, 2025
Balance: $100,000.01 to $250,000
Balance: $50,000.01 to $100,000
Balance: $0 - $25,000.00
Balance: $10,000-19,999.99
Balance: $300.00-$999.99
- Sep 24, 20260.75%▼ from 1.00%
- Sep 14, 20261.00%first recorded
Balance: $0 - $1,000
Retirement Accounts; Dividends declared monthly
Retirement Accounts; Dividends declared monthly
Balance: $1,000 to $50,000
A $3.00 monthly service charge if daily balance falls below $100.00. No minimum balance for customers under 18 years old.
Balance: All
Limits: $2,500 and over; Maximum contribution $250.00 per month; Declared January 28, 2025
Limits: $25.00 and over; Maximum contribution $250.00 per month; Declared January 28, 2025
Balance: $0 - $90,000+; No Minimum Daily Balance required to earn the stated APY; Minimum Opening Deposit: $0
Share Savings Account; $100.00 minimum
Balance: $0 - $10,000**; Requires Kasasa Checking account to qualify
- Oct 13, 20260.25%▲ from 0.05%
- Sep 21, 20260.05%first recorded
Qualifications Required: 1 direct deposit or ACH credit; 12 debit card purchases; e-statements enrollment; online banking enrollment/login; Balance: $100,000 +
Balance: $0.01 and over
Balance: $0.01 - Over
Balance: $25,000.00 and over
Balance: $100+; compounded monthly
Balance: $25,000 - $49,999; Tier 5; Minimum to earn dividend is $100; Dividends paid monthly
Balance: $100.00 - $4,999.99
No minimum daily balance required to earn the stated APY.
Balance: $10,000.00 and up
Banks and Credit Unions: If you identify an incorrect rate or wish to request the removal of your institution’s data, please contact us here.
South Dakota Savings Rate Trends
Compare local South Dakota savings rate quotes against the statewide average
Daily savings rate averages tracked across our database of 8,500+ banks and credit unions, updated every evening.
South Dakota high-yield savings rates rose 0.017 points over the past 7 days to 2.125% APY, up from 2.108%.
South Dakota standard savings rates fell 0.028 points over the past 7 days to 0.676% APY, down from 0.705%.
South Dakota Savings Rate Forecast, Next 12 Months
Savings rates move with Federal Reserve policy. Our model uses the current SD high-yield average and a Fed funds spread to project the likely rate trajectory for 2026 to 2027.
Savings account rates are variable and move in close correlation with the Federal Reserve’s federal funds rate target. Our 12-month forecast is derived from the current SD high-yield savings average of 2.125% APY and a Fed funds spread model calibrated to the historical relationship between policy rate changes and deposit rate adjustments at banks and credit unions.
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; deposit rates at banks and credit unions track policy-rate changes within 60 to 90 days. High-yield online savings rates tend to adjust faster than standard branch-based savings rates.
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 in South Dakota.
Savings Account Earnings in South Dakota
Annual interest earnings at current SD average APYs, based on the high-yield and standard savings averages tracked in our database. Compounding assumed monthly.
| Balance | HY Savings (2.125% APY) | Monthly Earnings | Standard Savings (0.676% APY) | Monthly Earnings |
|---|---|---|---|---|
| $5,000 | $106.26 / year | $8.86 | $33.81 / year | $2.82 |
| $10,000 | $212.51 / year | $17.71 | $67.61 / year | $5.63 |
| $25,000 | $531.28 / year | $44.27 | $169.03 / year | $14.09 |
| $50,000 | $1,062.55 / year | $88.55 | $338.05 / year | $28.17 |
| Earnings estimates use daily compounding. Actual earnings depend on exact rate, compounding frequency, and daily balance maintained. Rates are variable and subject to change. Source: South Dakota savings rate averages as of October 13, 2026. | ||||
About Our South Dakota Savings Rate Database
MonitorBankRates tracks 93 savings rates from 15 banks and 14 credit unions offering savings accounts to South Dakota residents, including community institutions, regional banks, and national online options. Our proprietary aggregation system pulls verified rate data directly from each institution’s official website, no estimates, no national averages passed off as real offers.
Every rate listed includes the institution’s Safety Grade (A+ to F), Star Rating (1 to 5), and Texas Ratio, objective financial health metrics calculated from FDIC and NCUA regulatory data, so you can compare yield and institutional safety in one place.
Current top rate: US Bank offers a savings account at 3.50% APY with a minimum deposit of $25. Use the rate table above to compare all current offers in South Dakota.
How to Find the Best Savings Rates in South Dakota
What to compare when shopping for a savings account in South Dakota
To find the best savings APYs in South Dakota, start with credit unions and online-only banks: South Dakota has 14 credit unions in our database, and they consistently offer some of the highest yields because they are member-owned nonprofits with lower overhead than traditional banks.
Always compare the APY (Annual Percentage Yield), not just the interest rate. APY reflects compounding and is the true measure of what you’ll earn. Savings accounts that compound daily earn slightly more than those compounding monthly at the same stated rate. The current SD high-yield savings average is 2.125% but top local institutions are offering as high as 3.50%, so shopping around pays off.
Unlike a CD, savings account rates are variable. Your rate can change at any time with Federal Reserve policy. Many institutions offer elevated introductory rates that reset after a promotional period. Review your account periodically to ensure your APY remains competitive.
When a High-Yield Savings Account Makes Sense
- Emergency fund: Financial experts recommend 3 to 6 months of expenses in a liquid, FDIC-insured account. South Dakota high-yield savings rates currently average 2.125% APY, far above a typical checking account.
- Short-term savings goals (6 to 24 months): If you may need the money soon, a savings account gives you immediate access without early withdrawal penalties.
- Parking cash between investments: A high-yield savings account at South Dakota institutions keeps idle cash working harder while remaining fully accessible.
- You prefer banking locally: 29 institutions in South Dakota report savings rates to our database.
- You’re among South Dakota’s 18.0% of residents aged 65+ for whom liquid, accessible savings complement fixed-income holdings.
- No rate lock-in risk: Unlike a CD, your rate moves up with the market if rates rise further.
Consider an Alternative If…
- You want a locked-in, guaranteed return South Dakota CD rates
- You want check-writing flexibility South Dakota money market rates
- You need daily transaction access South Dakota checking rates
South Dakota Financial Snapshot
Local demographics and economic context for savers. Source: U.S. Census Bureau
18.0% of residents are 65 or older, in line with the national average of 17.3%; a low unemployment rate of 2.9% reflects a strong local economy with solid savings capacity. At today’s SD high-yield savings average of 2.125%, saving 10% of the local median salary ($4,337/year) would earn an additional $92 annually in interest.
Data: U.S. Census Bureau and U.S. Bureau of Labor Statistics.
Savings Accounts vs. Other South Dakota Options
How high-yield savings accounts compare to other deposit products available at banks and credit unions in South Dakota.
| Feature | High-Yield Savings | Standard Savings | Money Market | CD (12-Month) |
|---|---|---|---|---|
| Current SD Avg APY | 2.125% | 0.676% | View MMA Rates | View CD Rates |
| Rate Type | Variable | Variable | Variable | Fixed for term |
| FDIC / NCUA Insured | ✓ Up to $250K | ✓ Up to $250K | ✓ Up to $250K | ✓ Up to $250K |
| Withdraw Anytime | ✓ Yes | ✓ Yes | ✓ Yes | ✗ Penalty applies |
| Check Writing | ✗ No | ✗ No | ✓ Often yes | ✗ No |
| Debit / ATM Card | Some institutions | ✗ Rarely | ✓ Often yes | ✗ No |
| Typical Min Deposit | $0 to $100 | $25 to $100 | $0 to $2,500 | $500 to $1,000 |
| Rate Risk | Variable, moves with Fed policy | Variable, moves with Fed policy | Variable, moves with Fed policy | None, locked for term |
| Best For | Emergency fund, short-term goals, parking cash | Everyday saving, low-balance accounts | Active savers wanting flexibility + check writing | Locking in a rate for a defined period |
APY data reflects South Dakota averages tracked in our database as of October 13, 2026. Rates are variable and may differ by institution. See individual product pages for full details.
Savings Calculators for South Dakota
At SD’s top rate of 3.50% from US Bank, a $10,000 deposit earns $350 annually. Enter your balance to see your exact return.
Savings Goal CalculatorA 3-month emergency fund for the median South Dakota earner is roughly $10,800. At 2.125% APY, saving $900/month gets you there in about 12 months. Set your target and see your exact timeline.
CD vs. High-Yield SavingsSouth Dakota’s high-yield savings average is 2.125% APY, variable and always accessible. A local CD may offer a higher fixed yield in exchange for locking in your deposit. Compare both side-by-side to find the better fit for your timeline.
Budget CalculatorBefore you can grow your savings, you need to know how much you can set aside each month. The median South Dakota earner makes $43,371/year. Track your income vs. expenses to find your monthly surplus, then put it to work at 2.125% APY.
Retirement PlannerA $25,000 high-yield savings balance earning 2.125% APY grows to roughly $38,071 over 20 years with compounding. See how your current savings trajectory lines up with your retirement income needs.
Methodology & Data Sources
Independent, Free, and Unbiased Rate Comparisons: MonitorBankRates.com is an independent rate comparison service. Our South Dakota savings rate tables are free for consumers to use, and we do not receive payment from any financial institution to be included or to be ranked in any particular order. Listings are based solely on the rates each institution 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 Savings Rate Data: We aggregate savings account rates for South Dakota directly from the official websites of banks and credit unions using our proprietary rate aggregation technology and a dedicated team of rate updaters. Every savings rate displayed 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 yields in South Dakota. We feature a comprehensive mix of institutions, from neighborhood credit unions and competitive regional banks to large national institutions available to savers in SD.
Daily Updates & Time-Stamped Accuracy: Our rate updaters verify and update savings rates daily. Because savings account yields can fluctuate rapidly, every product listed features its own specific “last updated” date, giving you complete transparency.
Frequently Asked Questions about Savings Accounts in South Dakota
What is a High-Yield Savings Account (HYSA)?
Are savings accounts in South Dakota safe?
How often do savings rates change in South Dakota?
Do I need a minimum deposit to open a savings account?
What is the difference between a Savings Account and a Money Market Account?
Are online banks better than local banks in South Dakota?
How do I open a savings account in South Dakota?
Best Savings Rates in South Dakota
- US Bank
Bank Smartly Savings Account: 3.50% APY - SNB Security National Bank of SD
Sidekick Savings (Variable Rate): 3.50% APY - OAB One American Bank
Savings+: 3.30% APY - Bluestone Federal Credit Union
12 MO VARIABLE SHARE CERT: 3.30% APY - BankStar Financial
Future Star Savings: 3.20% APY
South Dakota Rates & Resources
Cities in South Dakota
