Bank · FDIC insured
Grinnell State Bank CD Rates
Top CarrotGrinnell State Bank’s best CD rate is 4.25% APY on a 33-month CD. Terms run from 1 month to 5 years. Rates checked October 16, 2026.
How Grinnell State Bank’s CD rates compare
Compared with banks and credit unions near Des Moines, IA, where Grinnell State Bank has the most branches. $10,000, best rate first.
This bank’s best
Grinnell State Bank
4.15%APY
- Term
- 33 months
- Requires
- None
- Minimum
- $1,000
- Earns on $10,000
- $1,183
Certificates of Deposit
Top rate
Nicolet National Bank
4.75%APY
- Term
- 60 months
- Requires
- None
- Minimum
- $2,500
- Earns on $10,000
- $2,612
2nd-highest rate
Union State Bank
4.61%APY
- Term
- 27 months
- Requires
- Another account
- Minimum
- —
- Earns on $10,000
- $1,067
Grinnell State Bank CD score
85
CD score
Higher than 71% of U.S. banks and credit unions
- 3–8 months3–8 mo2.07%
- 9–15 months9–15 mo4.05%
- 16–30 months16–30 mo2.07%
- 31–60 months31–60 mo4.15%
- QualifiedQualified4.15%
Each track runs from the lowest to the highest rate among U.S. banks and credit unions; the dot is this rate.Qualified: needs another account or monthly activity.
Where Grinnell State Bank ranks
By CD score, in each area where it has branches
Every rate
Current CD rates
Rates from the bank’s website. Earnings assume the rate doesn’t change.
Certificates of Deposit
Up to 4.15%APY · 13 terms
Early withdrawal penalty may be imposed. Fees could reduce earnings. Funds accepted for deposit are required to be in-state or funds held within the State of Iowa. Maximum of $250,000 for non-personal (entity) depositor.
| Term | APY · $1,000 and up | APY · $2,500 and up | APY · $15,000 and up | APY · $50,000 and up | APY | Earns on $10,000Earns |
|---|---|---|---|---|---|---|
| 1–3 monthsTerm is 30–90 days. APYs based on minimum required deposit of each tier (Daily Balance) | — | 2.03% | 2.05% | 2.07% | 2.03%2.05% from $15k2.07% from $50k | $17 |
| 3 months | 2.07% | — | 2.17% | 2.27% | 2.07%2.17% from $15k2.27% from $50k | $51 |
| 6 months | 2.06% | — | 3.58% | 3.68% | 2.06%3.58% from $15k3.68% from $50k | $102 |
| 12 months | 2.07% | — | 2.17% | 2.27% | 2.07%2.17% from $15k2.27% from $50k | $207 |
| 15 months15 month with One Time Bump. Variable interest rate and APY may change after account opening if customer exercises bump option to match standard 18-month CD rate (limit one adjustment during term; requires branch visit) | 4.05% | — | 4.15% | 4.15% | 4.05%4.15% from $15k4.15% from $50k | $509 |
| 18 months | 2.07% | — | 2.17% | 2.27% | 2.07%2.17% from $15k2.27% from $50k | $312 |
| 24 months | 2.07% | — | 2.17% | 2.27% | 2.07%2.17% from $15k2.27% from $50k | $418 |
| 30 months | 2.07% | — | 2.17% | 2.27% | 2.07%2.17% from $15k2.27% from $50k | $526 |
| 33 months33 month with One Time Bump. Variable interest rate and APY may change after account opening if customer exercises bump option to match standard 36-month CD rate (limit one adjustment during term; requires branch visit) | 4.15% | — | 4.25% | 4.25% | 4.15%4.25% from $15k4.25% from $50k | $1,183 |
| 36 months | 2.12% | — | 2.22% | 2.32% | 2.12%2.22% from $15k2.32% from $50k | $650 |
| 42 months | 2.12% | — | 2.22% | 2.32% | 2.12%2.22% from $15k2.32% from $50k | $762 |
| 48 months | 2.22% | — | 2.32% | 2.42% | 2.22%2.32% from $15k2.42% from $50k | $918 |
| 60 months | 2.32% | — | 2.42% | 2.52% | 2.32%2.42% from $15k2.52% from $50k | $1,215 |
Sources (3)
All captured Oct 5, 2026
Special-purpose accounts
IRA Certificate of Deposit (CD)
Up to 4.25%APY · 13 terms
Yearly service fee of $20 applies to IRA accounts. Termination fee of $50. Early withdrawal penalty may be imposed. Fees could reduce earnings. Funds accepted for deposit are required to be in-state or funds held within the State of Iowa.
| Term | APY | Earns on $10,000Earns |
|---|---|---|
| 1–3 monthsTerm is 30–90 days. Rate schedule explicitly applies to $50,000.00 & IRA tier | 2.07% | — |
| 3 monthsRate schedule explicitly applies to $50,000.00 & IRA tier | 2.27% | — |
| 6 monthsRate schedule explicitly applies to $50,000.00 & IRA tier | 3.68% | — |
| 12 monthsRate schedule explicitly applies to $50,000.00 & IRA tier | 2.27% | — |
| 15 months15 month with One Time Bump. Rate schedule explicitly applies to $50,000.00 & IRA tier. Variable rate subject to one-time bump option | 4.15% | — |
| 18 monthsRate schedule explicitly applies to $50,000.00 & IRA tier | 2.27% | — |
| 24 monthsRate schedule explicitly applies to $50,000.00 & IRA tier | 2.27% | — |
| 30 monthsRate schedule explicitly applies to $50,000.00 & IRA tier | 2.27% | — |
| 33 months33 month with One Time Bump. Rate schedule explicitly applies to $50,000.00 & IRA tier. Variable rate subject to one-time bump option | 4.25% | — |
| 36 monthsRate schedule explicitly applies to $50,000.00 & IRA tier | 2.32% | — |
| 42 monthsRate schedule explicitly applies to $50,000.00 & IRA tier | 2.32% | — |
| 48 monthsRate schedule explicitly applies to $50,000.00 & IRA tier | 2.42% | — |
| 60 monthsRate schedule explicitly applies to $50,000.00 & IRA tier | 2.52% | — |
Sources (2)
All captured Oct 5, 2026
Opening an account
Confirm the bank’s opening requirements and whether the account is available where you live. A nearby branch does not establish eligibility for every rate.