5 Interest Savings Account Calculator

This calculator helps you determine how much your savings will grow with a 5% annual interest rate. Simply enter your initial deposit and the time period, then see the results calculated with compound interest.

How to Use This Calculator

Using this 5% interest savings account calculator is simple:

Enter your initial deposit amount in the "Initial Deposit" field.
Select the time period you want to calculate (in years).
Click the "Calculate" button to see your results.
Review the monthly and annual growth projections.

The calculator shows you how your savings will grow over time with compound interest. You can see the total amount, the interest earned, and a growth chart.

Formula Explained

The calculation uses the compound interest formula:

A = P × (1 + r/n)^(nt)

Where:

A = the future value of the investment/loan, including interest
P = the principal investment amount (the initial deposit or loan amount)
r = the annual interest rate (decimal)
n = the number of times that interest is compounded per unit t (we use 12 for monthly compounding)
t = the time the money is invested or borrowed for, in years

For this calculator, we use a 5% annual interest rate (0.05) compounded monthly.

This formula gives you the exact amount your savings will grow to over the selected time period.

Worked Example

Let's say you deposit $1,000 in a savings account with 5% annual interest compounded monthly. Here's how the calculation works:

Initial deposit: $1,000

Interest rate: 5% (0.05)

Time period: 5 years

Monthly interest rate: 0.05/12 = 0.0041667

Number of months: 5 × 12 = 60

Final amount = 1000 × (1 + 0.0041667)^60 ≈ $1,346.81

Interest earned: $1,346.81 - $1,000 = $346.81

After 5 years, your $1,000 deposit would grow to approximately $1,346.81 with 5% interest compounded monthly.

Frequently Asked Questions

How is compound interest calculated?

Compound interest is calculated by applying the interest rate to both the initial principal and the accumulated interest of previous periods. This means your money grows exponentially over time.

What's the difference between simple and compound interest?

Simple interest is calculated only on the original principal amount, while compound interest is calculated on the principal plus previously accumulated interest. Compound interest typically results in higher returns over time.

How often is the interest compounded in this calculator?

This calculator assumes monthly compounding, which is common for savings accounts. The interest is calculated and added to your balance every month.

Is this calculator accurate for all savings accounts?

This calculator provides an estimate based on a 5% annual interest rate compounded monthly. Actual results may vary depending on your specific savings account terms and conditions.