APY vs. Interest Rate: What's the Difference and Why It Matters
6/11/2026 6:11:29 PM
When comparing savings accounts, CDs, or other financial products, you’ve probably seen both an interest rate and an APY listed side by side; you may even just see the APY. At first glance, they may seem interchangeable, but understanding the difference between APY and interest rate can help you make smarter financial decisions and better evaluate how your money may grow over time.What Is an Interest Rate?
An interest rate on a deposit account is the nominal percentage a bank pays you to keep money in a deposit account. For deposit accounts such as high yield checking, savings accounts, money market accounts, or CDs, the interest rate represents the base rate of return you earn on your balance. This figure has not been adjusted for any potential compounding.
For example, if a savings account offers a 4.00% interest rate, that percentage determines how much interest your balance earns before compounding is factored in.
What Is APY?
What Is the Difference Between APY and Interest Rate?
The main difference between APY and interest rate is that APY includes compounding, while the standard interest rate does not.
Here’s a simple way to think about it:
- Interest rate = the base rate used to calculate interest
- APY = the total amount you may earn in a year after compounding
Two savings accounts may advertise the same interest rate, but the account with more frequent compounding could offer a higher APY and ultimately earn you more money over time.
Interest Rate vs. Annual Percentage Yield: Why It Matters
Understanding interest rate vs annual percentage yield is important because it helps you compare financial products more accurately.
When evaluating savings accounts, CDs (Certificates of Deposit), or money market accounts, APY often gives you the clearest picture of your potential earnings. A higher APY may help your savings grow faster over time, especially when balances remain in the account for longer periods.
In short, APY helps depositors understand a more complete view of their earning potential. Knowing this can help you make more informed financial decisions.
How Compounding Works
Compounding plays a major role in how APY is calculated. Banks may compound interest daily, monthly, quarterly, or annually. The more often interest compounds, the more opportunity your balance has to grow.
For example, if two accounts offer the same interest rate but one compounds daily while the other compounds annually, the daily compounding account will typically produce a higher APY. Over time, compounding can make a noticeable difference in your overall savings growth.
APY and Savings Accounts
When opening a savings account or certificate of deposit (CD), it’s important to look beyond the advertised interest rate and focus on the APY. A higher APY may help maximize your savings while keeping your funds secure and accessible, depending on the account type.
At Kearny Bank, we offer a variety of savings solutions designed to support different financial goals, including savings accounts, money market accounts, and CDs that can help clients grow their money with confidence.
Choosing the Right Account for Your Goals
It is important to also look beyond just APY when considering the right account for you, which depends on how you plan to use your money. If you are building an emergency fund or saving for short-term goals, accessibility and flexibility may be your top priorities. If you are focused on long-term growth, comparing APYs across account options can help you identify opportunities to maximize earnings.
It’s also important to consider factors beyond APY alone, including:
- Minimum balance requirements
- Fees
- Withdrawal limitations
- Account accessibility
- Overall financial goals
A balanced approach, potentially combining both a day-to-day checking account with a savings or money market account, can help ensure your savings strategy aligns with both your immediate needs and future plans.
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