CD Compound Interest Formula:
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Sterling Savings Bank offers Certificate of Deposit (CD) accounts with competitive interest rates up to 4.5% APY as of September 2025. CDs are time deposits that offer guaranteed returns when funds are held for a fixed term.
The calculator uses the compound interest formula:
Where:
Explanation: The formula calculates how much your CD investment will grow based on the principal amount, interest rate, compounding frequency, and time period.
Details: CDs offer a safe, predictable way to grow savings with FDIC insurance protection. They provide higher returns than regular savings accounts while preserving your principal investment.
Tips: Enter the principal amount in USD, annual interest rate as a percentage, select compounding frequency, and investment period in years. All values must be positive numbers.
Q1: What is the current maximum CD rate at Sterling Savings Bank?
A: As of September 2025, Sterling Savings Bank offers CD rates up to 4.5% APY for qualified deposits and terms.
Q2: Are CD investments FDIC insured?
A: Yes, Sterling Savings Bank CDs are FDIC insured up to $250,000 per depositor, per account ownership category.
Q3: What are the early withdrawal penalties?
A: Early withdrawal from a CD before maturity typically results in a penalty, usually several months' worth of interest. Specific terms vary by CD product.
Q4: How often is interest compounded?
A: Sterling Savings Bank CDs typically compound interest daily or monthly, depending on the specific CD product.
Q5: What CD terms are available?
A: Sterling Savings Bank offers various CD terms ranging from 3 months to 5 years, with higher rates generally for longer terms.