ganak.appAPY Calculator
Calculate Annual Percentage Yield (APY) and compare APR vs APY for savings accounts, CDs, and high-yield accounts. Project savings growth with daily, monthly, or annual compounding and recurring contributions. See how compounding frequency impacts your returns.
In APY mode, compounding is already factored in. This setting affects the equivalent APR shown above.
Yearly Growth
See how your savings grow year by year
Year | TotalDeposits | InterestThis Year | TotalInterest | Balance |
|---|---|---|---|---|
| 1 | $16,000 | $636 | $636 | $16,636 |
| 2 | $22,000 | $968 | $1,604 | $23,604 |
| 3 | $28,000 | $1,317 | $2,921 | $30,921 |
| 4 | $34,000 | $1,682 | $4,603 | $38,603 |
| 5 | $40,000 | $2,066 | $6,670 | $46,670 |
What is APY?
Understanding Annual Percentage Yield and how it applies to Certificate of Deposit (CD)
Annual Percentage Yield (APY) represents the total interest you earn on a deposit over one year, including the effect of compounding. Unlike APR (Annual Percentage Rate), APY accounts for how often interest is credited to your account, making it the true measure of your earning potential.
Most high-yield savings accounts compound daily, while CDs may compound daily, monthly, or quarterly. Current typical rates: Rates vary by institution and market conditions. Compare current APYs across banks and credit unions before opening an account..
How to Calculate APY
Learn the formula and see step-by-step examples
r = Annual interest rate (APR) as a decimal (e.g., 5% = 0.05)
n = Number of compounding periods per year
Example:
A high-yield savings account with 5% APR compounded daily:
APY = (1 + 0.05/365)365 − 1 = 5.127%
APR vs APY: What's the Difference?
Compare APR and APY side-by-side to understand when to use each
| Feature | APR | APY |
|---|---|---|
| Definition | Annual Percentage Rate | Annual Percentage Yield |
| Compounding | Does not include | Includes compounding effect |
| Value | Always lower or equal | Always higher or equal |
| Best for comparing | Loans, credit cards | Certificate of Deposit (CD), High-Yield Savings Account |
| Use case | What you pay (borrowing) | What you earn (saving) |
Tips to Maximize Your Returns
Practical strategies for Certificate of Deposit (CD) and High-Yield Savings Account
Shop Online Banks
Online banks often offer higher APYs than many traditional brick-and-mortar accounts, but rates change frequently. Compare current APYs and fees before opening.
Choose Daily Compounding
Daily compounding yields slightly more than monthly or quarterly. Over time, this adds up significantly.
Avoid Monthly Fees
A $5/month fee on a $1,000 balance effectively reduces your APY by 6%. Look for no-fee accounts.
Build a CD Ladder
Spread investments across CDs with different maturity dates to balance liquidity and higher rates.
CD vs High-Yield Savings Account
Compare your savings options
Certificate of Deposit (CD)
- ✓ Typically higher APY (locked rate)
- ✓ Guaranteed returns for the term
- ✗ Early withdrawal penalty
- ✗ Funds locked for fixed period
Best for: Money you won't need for a specific period
High-Yield Savings Account
- ✓ Full liquidity—withdraw anytime
- ✓ FDIC insured up to $250,000 per depositor, per bank
- ✗ Variable APY (can change)
- ✗ May have minimum balance requirements
Best for: Emergency fund, short-term savings goals
Tax and Insurance Information
Key tax rules and deposit protection for your savings
Deposit Insurance: FDIC insured up to $250,000 per depositor, per bank
Tax Treatment: Interest income is taxable as ordinary income. Form 1099-INT issued for interest over $10.
Frequently Asked Questions
Common questions about annual percentage yield and interest rates