Interest Bearing Savings Account Calculator

Calculate the interest earned on a savings account using our interest bearing savings account calculator. This tool helps you determine how much you'll earn over time with different interest rates and compounding periods.

How to Use This Calculator

To calculate the interest earned on a savings account:

Enter the principal amount (initial deposit)
Select the interest rate type (APR or APY)
Enter the annual interest rate
Select the compounding frequency
Enter the time period in years
Click "Calculate" to see your results

The calculator will display the total amount in your account after the specified time period, the total interest earned, and a chart showing your balance growth over time.

Formula Used

The interest bearing savings account calculator uses the compound interest formula:

A = P × (1 + r/n)^(n×t) where: A = the future value of the investment/loan, including interest P = the principal investment amount r = the annual interest rate (decimal) n = the number of times that interest is compounded per year t = the time the money is invested or borrowed for, in years

For APY calculations, the formula adjusts to account for the effect of compounding on the annual percentage rate.

Worked Example

Let's calculate the interest earned on $1,000 over 5 years with a 3% annual interest rate compounded quarterly.

P = $1,000 r = 3% = 0.03 n = 4 (quarterly compounding) t = 5 years A = 1000 × (1 + 0.03/4)^(4×5) A = 1000 × (1.0075)^20 A ≈ $1,159.73 Total interest earned = A - P = $1,159.73 - $1,000 = $159.73

Using our calculator, you would enter these values and see that after 5 years, your $1,000 investment would grow to approximately $1,159.73, earning $159.73 in interest.

APR vs. APY Comparison

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

Term	Definition	Calculation
APR	Annual Percentage Rate - the simple interest rate	APR = (Interest for the period / Principal) × (Number of periods per year)
APY	Annual Percentage Yield - the effective interest rate accounting for compounding	APY = (1 + r/n)^n - 1

For example, a savings account offering a 3% APR with monthly compounding would have an APY of approximately 3.07%. The APY shows the actual return you'll receive after accounting for compounding.

Frequently Asked Questions

What is the difference between APR and APY?

APR (Annual Percentage Rate) is the simple interest rate, while APY (Annual Percentage Yield) accounts for compounding and shows the effective annual rate. APY is always higher than APR for compounding accounts.

How often should interest be compounded?

The more frequently interest is compounded, the higher your returns. Daily compounding typically provides the best results, but monthly or quarterly compounding is common in savings accounts.

Is it better to have a higher APR or APY?

APY is more important because it shows the actual return after accounting for compounding. A higher APY means you'll earn more money over time, even if the APR is lower.

How does compound interest work?

Compound interest means that interest is calculated on the initial principal and also on the accumulated interest of previous periods. This causes your money to grow exponentially over time.