Enter principal amount, annual interest rate, and term (in months) to calculate maturity interest and total amount.
Using the Deposit Interest Calculator is straightforward:
The formula for deposit interest is: Interest = Principal × Annual Interest Rate × Deposit Term (years). For compound interest: Total = Principal × (1 + Rate/Periods)^(Periods×Years). This tool supports daily, monthly, quarterly, and yearly compounding frequencies.
Simple interest is calculated only on the principal amount, while compound interest adds earned interest back to the principal (earning interest on interest). Over time, compound interest generates significantly more returns. For example, $100,000 at 3% for 20 years: simple = $60,000 interest, monthly compound ≈ $82,000.
Deposit rates are set by banks based on central bank benchmark rates and market conditions. Different deposit types (demand, time, certificates of deposit) have different rates, with longer terms typically offering higher rates. This tool uses your input rate, not real-time market rates.
This tool uses standard financial mathematics formulas for accurate calculations. However, actual bank settlements may vary due to rounding or rate adjustment dates. Use this tool as a reliable reference for deposit planning.