Savings Account Yearly Interest Calculator

How to Use This Calculator

This savings account yearly interest calculator helps you determine how much interest you'll earn in a year based on your principal amount and the interest rate offered by your bank.

To use the calculator:

1. Enter the principal amount (the initial deposit or balance in your savings account)
2. Enter the annual interest rate (APR or APY)
3. Select whether the rate is APR or APY
4. Click "Calculate" to see your yearly interest

The calculator will display your yearly interest amount and show a breakdown of how the calculation was made.

Formula Explained

The basic formula for calculating simple interest is:

For compound interest (APY), the formula is more complex and accounts for interest on interest. The calculator handles both simple and compound interest calculations based on your selection.

APR vs APY Explained

Understanding the difference between Annual Percentage Rate (APR) and Annual Percentage Yield (APY) is crucial when comparing savings accounts.

For example, if a savings account offers a 1% APR with monthly compounding, the APY would be approximately 1.01% (1% + 0.01%).

Worked Example

Let's say you have $1,000 in a savings account with a 1.5% APR that compounds monthly.

Using the calculator:

1. Enter Principal: $1,000
2. Enter Rate: 1.5
3. Select APY
4. Click Calculate

The calculator would show that your yearly interest would be approximately $15.18.

This is calculated by compounding the interest monthly: (1 + 0.015/12)^12 - 1 = 0.01518 or 1.518%.