Use our interest calculator to calculate the possible growth of your savings and investments over time. You can include regular deposits and withdrawals in your calculation.
This simple interest calculator calculates an accrued amount that includes principal plus interest.
How to calculate Interest?
To use the provided above calculator, follow these steps to calculate the final amount of an investment, the real amount after considering tax and inflation, and visualize the adjusted total amount over time:
- Choose Investment Type:
- Select “Annual Investment” if you want to make annual investments.
- Select “Monthly Investment” if you want to make monthly investments.
- Enter Investment Details:
- Enter the “Investment Amount” you plan to invest.
- Enter the “Interest Rate” as a percentage (e.g., 5 for 5%).
- Enter the “Time Period” in the years for which you plan to invest.
- Enter the “Tax Rate” as a percentage (e.g., 10 for 10%).
- The “Inflation Rate” is pre-filled with 3%.
- Click the “Calculate” Button:
- After entering the required details, click the “Calculate” button.
- View Results:
- The “Final Amount” will be displayed, which represents the total amount after applying the interest rate over the given time period.
- The “Real Amount (After Tax and Inflation)” will be displayed, which represents the amount after considering the tax rate and adjusting for inflation.
- Chart Visualization:
- A line chart will be displayed in the right column.
- The chart shows how the “Adjusted Total Amount” changes over time, considering the effects of inflation.
- Clear Inputs:
- If you want to calculate for a different scenario, click the “Clear” button to reset all input fields and clear the chart.
Here’s an example for better understanding:
- Investment Type: Annual Investment
- Investment Amount: R10,000
- Interest Rate: 5% per year
- Time Period: 10 years
- Tax Rate: 15%
- Inflation Rate: 3%
After entering these values and tapping the “Calculate” button, you might see something like this:
- Final Amount: R16288.95
- Real Amount (After Tax and Inflation): R10302.43
The chart will also show the adjusted total amount over the 10-year period, considering the effects of inflation.
Please note that this calculator is for educational purposes and provides a simplified representation of investment calculations. Real-world investments may involve additional complexities and variables that this calculator does not account for.
If you want to calculate Your Profit Margin. Interested? Well, keep reading! And don’t forget to check out our dedicated Margin Calculator.
Editorial Note: Editors and site owners are not liable for damage or loss of profits caused by the use of an SA Interest Calculator or the inability to use information from this site. You are using this page at your own risk.