Deposit Rates

Deposit rates effective 3/13/2017.

Preferred Rewards Checking*

Minimum opening deposit of $50 is required for all checking accounts.

TYPE  Interest Rate APY
Less than $25,000  0.65% 0.65%
$25,001 and up  0.11% 0.16-0.65%
Non-Qualifying  0.05%


Checking and Savings Accounts
FDIC Insured. APY = Annual Percentage Yield. Rates may vary. Fees could reduce earnings.


Interest on Accounts (Checking and Savings)
You must maintain the daily balances listed each day of the statement cycle to obtain the disclosed annual percentage yield. Interest rates are paid on the entire balance each day at the interest rate in effect for that balance tier. We use the daily-balance-method to calculate interest payments on your account. This method applies a daily periodic rate to principal balance in your account each day. Non-cash items (e.g. checks) you deposit into your account begin to earn interest on the business day we receive credit. Your interest rate and annual percentage yield may change. Fees could reduce earnings on your account. At our discretion, we may change the interest rate on your account at any time. For current APY information, call us at (712) 277-6500.

*Interest rates in the Preferred Rewards Checking account are paid using the average-daily-balance method. For more information how interest is calculated, see the Truth in Savings Disclosure for Preferred Rewards Checking.

Health Savings Account

TYPE  Interest Rate APY
Less than $2,500 0.25%  0.25%
$2,500-$9,999  0.50% 0.50%
$10,000 and up  1.00% 1.00%


TYPE  Interest Rate APY
Regular Statement Savings  0.05% 0.05%
S.O.S. - under $500  0.06% 0.06%
S.O.S. - $500 and over  0.10 0.10
MMGA Savings - $100,000 and over  0.14 0.14
MMGA Savings - $40,000-$99,999  0.11 0.11
MMGA Savings - $2,500-$39,999  0.08 0.08

MMGA Savings - $2,499 and below

 0.05  0.05
 MMIA Commercial - $2,500 minimum  0.05  0.05
 MMIA Commercial - $10,000 minimum Changes Daily  Changes Daily


Minimum of $1000.

91 Day 0.05% 0.05%
182 Day 0.05% 0.05%
8 Month 0.10% 0.10%
10 Month 0.10% 0.10% 
1 Year 0.10% 0.10%
 14 Month 0.10% 0.10%
 18 Month 0.15%  0.15%
 24 Month 0.15% 0.15%
 30 Month*** 0.27% 0.27%
 3 Year 0.37% 0.37%
 4 Year 0.57% 0.57%
 5 Year 1.11% 1.11%

CD Plus**

Minimum of $1000.

91 Day 0.20% 0.20%
182 Day 0.25% 0.25%
8 Month 0.30% 0.30%
10 Month 0.35% 0.35%
1 Year 0.40% 0.40%
14 Month 0.50% 0.50%
18 Month 0.55% 0.55%
24 Month 0.55% 0.55%
30 Month*** 0.77% 0.77%
3 Year 0.87% 0.87%
4 Year 1.07% 1.07%
5 Year**** 1.61% 1.62%


Certificate of Deposits
Automatically renewed CDs will default to the regular rate.
*Denotes a change.
**CD Plus Rate available to new or existing checking account customers.
***30 Month CD to be offered at SNB-Iowa and SNB-South Dakota. Step-up option after 15 months (one time rate increase as of date of customer's request) 1/2 of Principal may be withdrawn without penalty after 15 months. Any subsequent withdrawals subject to penalty. Renewable-step up and no penalty on 1/2 withdrawal after 15 months during initial term only.
****5 Year FLEX CD to be offered at SNB-Iowa and SNB-South Dakota. Initial Term Only - One rate modification allowed during the first year and one rate modification allowed during the last year. The rate modification or rate increase will be equal to the Bank's current 5 Year offer rate as of the date of the customer's request. $1,000 minimum deposit required. Excludes Individual Retirement Accounts. Early withdrawals subject to penalty. For consumer customers only. CD Plus rate available to new or existing checking account customers. Limited time offer.

Interest begins to accrue on the business day you deposit non-cash items (e.g. checks). You must maintain the minimum balance designated for each term in the account each day to obtain the disclosed annual percentage yield. Simple interest is compounded and credited semiannually for terms of one year or longer. For terms of less than one year -- simple interest is compounded and paid at maturity. The interest rate will be paid until the maturity date of your fixed rate certificate. You have the option of obtaining a renewable or non-renewable CD. A renewable certificate will automatically renew at maturity. You will have 10 calendar days after the maturity date to withdraw funds without penalty. A non-renewable certificate will not renew automatically at maturity. If you do not renew the account, interest will not be paid after maturity. Renewable CDs will be automatically renewed for additional terms, each equal to the original term, until the Bank receives written notice from you that you no longer wish to renew the account. CD Plus Accounts will renew at the regular CD rate published at that time. The annual percentage yield paid on renewable CDs will be the yield offered by the Bank at the time of such renewal for CDs with the same type, amount, and term of the account being renewed. After the account is opened, you may not make deposits into or withdrawals from the account until the maturity date. The annual percentage yield assumes that interest will remain on deposit until maturity. A withdrawal will reduce earnings. For current annual percentage yield information, contact us at (712) 277-6500.

Penalties for Early Withdrawal:
Term Penalty
91 day or less the greater of 7 days interest or the accrued interest
92 day to 1 year 91 days interest
Over 1 year 182 days interest 


Individual Retirement Accounts (IRAs)

Variable Rate 0.55% 0.55%
 Fixed Rate Same Terms & Rates apply as CDs Same Terms & Rates apply as CDs


Rates may change after account is opened. Effective through calendar quarter.