Saving Account Growth Calculator

How to Use This Calculator

Using our saving account growth calculator is simple:

1. Enter your initial deposit amount in the first field.
2. Specify how much you plan to contribute each month.
3. Input your expected annual interest rate (APR).
4. Select the number of years you plan to save.
5. Click "Calculate" to see your projected balance.

The calculator will display your future balance and show a growth chart. You can adjust any input to see how changes affect your savings.

How Compound Interest Works

Compound interest is the process where your interest earnings earn additional interest over time. This is different from simple interest, where only the original principal earns interest.

For example, if you deposit $1,000 at 5% annual interest compounded annually:

• After 1 year: $1,000 + ($1,000 × 0.05) = $1,050
• After 2 years: $1,050 + ($1,050 × 0.05) = $1,102.50
• After 3 years: $1,102.50 + ($1,102.50 × 0.05) = $1,157.62

Notice how the interest grows each year, leading to faster growth over time.

The Formula

The future value of your savings can be calculated using this formula:

Where:

• FV = Future Value
• P = Principal (initial deposit)
• PMT = Monthly contribution
• r = Annual interest rate (as a decimal)
• n = Number of times interest is compounded per year (12 for monthly)
• t = Time in years

This formula accounts for both the initial deposit and regular contributions, with interest compounded monthly.

Worked Example

Let's calculate the future value of $1,000 initial deposit with $200 monthly contributions at 6% annual interest over 10 years:

Calculating this gives a future value of approximately $36,800.

This example shows how regular contributions and compound interest can significantly grow your savings over time.