Personal Certificates of Deposit (CDs)

We design our personal CDs with your needs in mind. Whether you are saving for college, retirement, or somewhere in between, our CD account options will turn savings into earnings.

Deposit Time Period

Minimum Opening Deposit

30-90 Days


3, 6, & 12 Months


18, 24, 30, & 36 Months


42, 48, & 60 Months


15 and 33 Months with Bump


Personal Certificates of Deposit Specials

Deposit Time Period

$1,000 Minimum (DB3)

$15,000 Minimum (DB3)

$50,000 Minimum (DB3)

15 Month with One Time Bump(1)(2)(Variable)

2.17% APY

2.27% APY

2.27% APY

33 Month with One Time Bump(1)(2)(Variable)

2.68% APY

2.78% APY

2.78% APY

Features of Personal CDs:

  • Interest rates and Annual Percentage Yield (APY) are based on the deposit amount and deposit time period selected.
  • The current Interest Rate Tiers are: $1,000 & over; $15,000 & over; $50,000 & over.
  • “Jumbo” Certificates over $100,000 are quoted interest rates on an individual basis.
  • Certificates of Deposit do not have transaction capability.
Current Rates

(1) APY is Annual Percentage Yield. Percentages reflected are based on each specific Minimum investment amount ($1,000, $15,000 or $50,000). The Stated APY rates are accurate as of September 1, 2022. A penalty may be imposed for early withdrawal. Fees could reduce the earnings. 

(2) The interest rate and annual percentage yield may change after account opening. The initial interest rate on your account will not change for the initial term of the account, unless you request and exercise the One Time “Bump Option”. For the 15 Month special, if the Rate on a GSB standard 18-mo term CD raises above the initial rate on your CD, or for the 33 Month special, if the Rate on a GSB standard 36-mo term CD raises above the initial rate on your CD, you may request the One Time Bump Option to have your yield adjusted to match the new yield for the remainder of the term. Limit one adjustment during term. This requires you to visit a Grinnell State Bank branch. Offer is subject to a $250,000 Deposit maximum for Non-Personal (entity) Depositors. Funds accepted for deposit are required to be “in state” or funds held within the State of Iowa.

(3) Daily Balance (DB)

Important Information about Procedures for Opening a New Account: To help the government fight the funding of terrorism and money laundering activities, Federal Law requires all financial institutions to obtain, verify, and record information that identifies each person or business that opens an account. What this means for you: When you open an account, we will ask for your name, address, date of birth, and other information that allows us to identify you. We may also ask to see your driver’s license or other identifying documents.

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Our friendly staff is ready to help you create a new account or transfer your existing account to Grinnell State Bank.

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