Compound Interest Calculator
Estimate how an initial investment can grow over time with compound interest and optional recurring contributions.
Enter your investment information
Enter your starting amount, interest rate, investment period and contribution assumptions.
Estimated future value
Review the estimated balance, contributions and compound interest earned.
Enter your investment details
DIXANI will estimate your future value, total contributions and compound interest.
See where the final balance comes from
Compare your initial investment, additional contributions and estimated compound interest.
Example compound interest calculation
Suppose you start with QAR 10,000, earn an annual interest rate of 5% compounded monthly for 10 years, and contribute QAR 500 each month.
Initial Investment: QAR 10,000 • Interest Rate: 5% • Period: 10 years • Contribution: QAR 500 monthly
What your compound interest results mean
The final balance is made up of more than just interest. Understanding each result helps you see how much comes from your own contributions and how much comes from compounding.
Future Value
Future value is the estimated total balance at the end of the selected period. It includes your initial investment, recurring contributions and estimated compound interest.
Total Contributions
This is the amount you have personally added over time, including the starting investment and any recurring contributions used in the calculation.
Interest Earned
Interest earned represents the estimated growth generated by compounding rather than money you directly contributed.
Growth Percentage
The growth percentage helps show how much the final balance has increased compared with the amount contributed under the assumptions entered into the calculator.
Planning tip: Compare total contributions with interest earned. Over longer periods, compound interest can become a larger part of the final balance, especially when contributions are made consistently.
How compound interest works
Compound interest means interest is earned not only on the original principal but also on previously accumulated interest.
A = future value, P = principal, r = annual interest rate, n = number of compounding periods per year, and t = time in years.
What can affect investment growth?
Investment growth can change significantly depending on the interest rate, time period, compounding frequency and amount contributed.
Starting Amount
A larger initial investment gives compound interest a larger starting balance to work with.
Investment Period
Longer periods allow more time for accumulated interest to generate additional interest.
Interest Rate
Higher rates can increase potential growth, although actual investment returns may vary.
Regular Contributions
Recurring contributions can substantially increase the amount available to compound over time.
Understand what this estimate assumes
This calculator provides a mathematical growth estimate. Actual savings or investment returns may differ.
Constant Rate
The calculation assumes the entered annual interest rate remains constant.
Regular Contributions
Recurring contributions are assumed to be made consistently at the selected frequency.
No Fees or Taxes
Taxes, account fees, investment charges and other deductions are not included.
Planning Estimate
The results are intended for general planning and educational purposes.
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Open Calculator →Compound Interest Calculator — Frequently Asked Questions
What is compound interest?
Compound interest is interest calculated on the original principal plus interest that has already accumulated.
What is compounding frequency?
Compounding frequency determines how often interest is added to the balance. Common frequencies include annually, quarterly, monthly and daily.
Can I include regular contributions?
Yes. You can enter an optional contribution and choose whether it is made monthly, quarterly or annually.
Does a higher compounding frequency increase growth?
With the same nominal annual interest rate, more frequent compounding generally produces a slightly higher future value.
Does this calculator predict investment returns?
No. It provides a mathematical estimate using the rate you enter. Actual investment returns can rise or fall and are not guaranteed.
Does the calculation include taxes or investment fees?
No. Taxes, management fees, transaction costs and other charges are not included unless you account for them separately in your assumptions.
Is this financial advice?
No. This calculator is intended for general educational and planning purposes.