Bank · FDIC insured
Security National Bank CD Rates
Security National Bank’s best CD rate is 4.25% APY on an 18-month CD. Terms run from 6 months to 18 months. Rates checked October 16, 2026.
How Security National Bank’s CD rates compare
Compared with banks and credit unions in Iowa, where Security National Bank has the most branches. $10,000, best rate first.
This bank’s best
Security National Bank
4.25%APY
- Term
- 18 months
- Minimum
- $1,000
- Earns on $10,000
- $644
Traditional CD
Top rate
First Federal Credit Union.
7.30%APY
- Term
- 3 months
- Minimum
- $5,000
- Earns on $10,000
- $198
2nd-highest rate
Nicolet National Bank
4.75%APY
- Term
- 60 months
- Minimum
- $2,500
- Earns on $10,000
- $2,612
Every rate
Current CD rates
Rates from the bank’s website. Earnings assume the rate doesn’t change.
Traditional CD
Up to 4.25%APY · 2 terms
Minimum opening deposit of $1,000. Simple interest is compounded and credited semi-annually for terms of 1 year or longer, or compounded and paid at maturity for terms less than 1 year.
| Term | APY | Earns on $10,000Earns |
|---|---|---|
| 6 monthsCD special rate offer good for initial term only at Security National Bank locations in Iowa and Dakota Dunes, S.D | 3.50% | $173 |
| 18 monthsCD special rate offer good for initial term only at Security National Bank locations in Iowa and Dakota Dunes, S.D | 4.25% | $644 |
Sources (1)
- snbonline.com/certificates-of-deposit · captured Oct 16, 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.