APY Calculator
Calculate Annual Percentage Yield 📈 | Compare Savings, CDs & Investment Returns
What is APY (Annual Percentage Yield)?
APY (Annual Percentage Yield) is the real rate of return earned on a savings deposit or investment, accounting for the effect of compounding interest. Unlike the simple interest rate, APY shows you exactly how much your money will grow over one year, making it the best metric to compare savings accounts, CDs, and high-yield accounts.
For example, a savings account with a 5% interest rate compounded monthly has an APY of approximately 5.12%. The more frequent the compounding, the higher the APY — even with the same stated rate.
APY Formula & Calculation Method
Where: r = interest rate (as decimal), n = compounding periods per year
Then, to calculate your final balance: A = P × (1 + r/n)n×t
How to Use This APY Calculator
- Enter your Principal Amount (initial deposit or investment).
- Select your Currency (USD, EUR, INR, GBP).
- Input the Stated Interest Rate (what the bank advertises).
- Choose Compounding Frequency (daily, monthly, quarterly, etc.).
- Set the Term (Years) to see long-term growth.
- Click "Calculate APY & Growth" to see your actual annual yield and future balance.
Why APY Matters for Your Savings
- Compare apples to apples: Banks advertise different compounding frequencies — APY standardizes them.
- Maximize returns: Daily compounding yields ~0.1-0.3% more APY than monthly on the same rate.
- CD laddering: Use APY to compare certificates of deposit across terms and institutions.
- High-yield accounts: Online banks often offer 4-5% APY vs. traditional banks at 0.01%.
APY vs. Interest Rate: Key Difference
5.00%
Doesn't include compounding
5.12% (monthly compounding)
Includes compounding effect
Frequently Asked Questions
What's the difference between APY and APR?
APY applies to savings/investments (what you earn). APR applies to loans (what you pay). APY includes compounding; APR often does not.
Is a higher APY always better?
Yes — for savings accounts and CDs, higher APY means more earnings. But check for fees, minimum balances, or withdrawal penalties.
How does compounding frequency affect APY?
More frequent compounding = higher APY. Daily compounding yields about 0.1-0.3% more APY than monthly at the same rate.
What is a good APY right now?
As of 2025-2026, high-yield savings accounts offer 4-5% APY. CDs range 4-5.5% APY depending on term. Traditional banks offer under 0.1%.
Can APY change over time?
Yes. Most savings accounts have variable APYs that change with federal rates. CDs have fixed APYs for the term length.
💡 Pro Tip: Always compare APY instead of interest rate when shopping for savings accounts, money market accounts, or CDs. Use this calculator to see the real return on your money.