Compound Interest Calculator

Calculate how your investments grow over time with the power of compound interest

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Calculate Compound Interest

See how your investments grow over time with the power of compound interest and regular contributions

Initial Investment ($)

Monthly Contribution ($)

Annual Interest Rate (%)

Compound Frequency

Investment Period (Years)

Additional Factors

Tax Rate (%) For after-tax calculations

Inflation Rate (%) For inflation-adjusted calculations

Investment Growth Summary

Investment Results

                Future Value:
                $0.00
              

Total Principal: $0.00

Total Interest: $0.00

After-Tax Value: $0.00

Inflation-Adjusted Value: $0.00

Yearly Breakdown

Year	Start Value	Contributions	Interest	End Value	Inflation-Adjusted

Enter investment details and click Calculate to see your growth projection

About Compound Interest Calculator

Zeta Calculator's Compound Interest Calculator helps you visualize the growth of your investments over time. Compound interest is the process where interest is added to the principal sum, and from that moment on, the added interest also earns interest. This effect can dramatically increase your wealth over long periods.

Calculator Features

Initial Investment: The amount you start with in your investment or savings account
Monthly Contributions: Additional money you add to your investment on a monthly basis
Compound Frequency: How often interest is calculated and added to your investment (daily, weekly, monthly, quarterly, semi-annually, or annually)
Tax and Inflation Adjustments: See how taxes and inflation affect the real value of your investment
Yearly Breakdown: Detailed year-by-year analysis of your investment growth
Visual Growth Chart: See a visual representation of how your investment grows over time

The Power of Compound Interest

Compound interest is often called the eighth wonder of the world. It allows your money to grow exponentially rather than linearly. The longer you leave your money invested, the more powerful compound interest becomes. This calculator helps you understand:

How your initial investment grows over time
The impact of regular contributions on your final balance
The difference between the principal you invest and the interest you earn
How different compounding frequencies affect your returns
The effects of taxes and inflation on your investment's real value

Using This Calculator

Enter your initial investment amount
Specify any regular monthly contributions you plan to make
Enter the annual interest rate (expected return on investment)
Select how often interest compounds (daily, monthly, quarterly, etc.)
Enter the investment period in years
Optionally, specify tax and inflation rates for more realistic projections
Click "Calculate" to see detailed results

Note: This calculator is for educational purposes only. Actual investment returns will vary and are not guaranteed. Always consult with a financial advisor before making investment decisions.