A compound interest calculator is a great financial tool used to estimate the growth of an investment or the total repayment amount on a loan. It factors in the initial principal, interest rate, compounding frequency, and time. By applying the compound interest formula, these calculators provide precise projections, enabling individuals to make informed financial decisions.

## Frequently asked questions

Most compound interest calculators focus on fixed investments, but for scenarios with regular withdrawals, you may need a more sophisticated financial calculator or software. Consider consulting a financial advisor or using specialised tools that account for ongoing contributions or withdrawals to get accurate projections for your specific financial situation.

Compound interest is calculated using the formula: A = P (1 + r/n)^(nt), where A is the future value of the investment, P is the principal amount, r is the annual interest rate, n is the number of times interest is compounded per year, and t is the number of years the money is invested.

Simple interest is calculated only on the initial principal amount, whereas compound interest considers the interest accrued on both the initial principal and the accumulated interest from previous periods. Below is the formula for simple interest and compound interest:

Simple interest - I=P×r×t

Compound interest - A=P(1+nr)nt

APR (Annual Percentage Rate) represents the actual yearly cost of funds over the term of a loan, including any fees or additional costs. APY (Annual Percentage Yield), on the other hand, reflects the total amount of interest earned or paid on an account, based on the interest rate and the frequency of compounding within a one-year period.

Yes, compound interest calculators can be used for both loans and investments. For loans, you input the loan amount, interest rate, compounding frequency, and the loan tenure.

Yes, compound interest calculators are suitable for fixed interest rates as well. Whether it's a savings account, loan, or investment with a consistent interest rate, these calculators accurately determine future values by compounding the fixed rate over time. They're valuable tools for various financial planning scenarios with stable interest rates.

Yes, a compound interest calculator can compare different loan options by calculating the total repayment amount, helping borrowers choose the most cost-effective loan based on their financial situation.

While interest rate significantly impacts loan repayment, the frequency of compounding and the loan terms also play crucial roles. Longer tenure can also lead to increased total repayment amounts.

RoR (Rate of Return) and TWR (Time-Weighted Return) are financial metrics used to evaluate investment performance. RoR measures gains or losses over a specific period, while TWR eliminates the impact of cash flows, providing a clearer picture of investment performance over time, especially for portfolios with multiple contributions or withdrawals.

Most compound interest calculators focus on fixed investments, but for scenarios with regular withdrawals, you may need a more sophisticated financial calculator or software. Consider consulting a financial advisor or using specialised tools that account for ongoing contributions or withdrawals to get accurate projections for your specific financial situation.

You can calculate your interest using our interest calculator online.