Bank Loan Interest Calculator
Calculate the total interest and monthly payment for a bank loan based on principal, annual interest rate, and loan term.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Bank Loan Interest Calculator
- Enter Loan Amount ($): Input the total principal you plan to borrow (e.g., $10,000). Must be greater than 0.
- Enter Annual Interest Rate (%): Type the yearly interest rate as a percentage (e.g., 5 for 5%). Accepts values from 0 to 100.
- Enter Loan Term (Years): Specify the repayment period in whole years (e.g., 5). Minimum is 1 year.
- Click "Calculate": Press the blue button to compute your results.
- Monthly Payment: Fixed amount due each month.
- Total Interest: Total interest paid over the loan term.
- Formula: Shows the calculation details for transparency.
What You Get:
Tip: All inputs must be positive numbers. Errors appear in red if values are invalid. Results update instantly on each calculation.
Previous Results
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Frequently Asked Questions
The monthly payment is calculated using the formula for an amortizing loan: M = P * [r(1+r)^n] / [(1+r)^n - 1], where P is the principal, r is the monthly interest rate (annual rate divided by 12), and n is the total number of monthly payments.
Total interest is the sum of all interest payments over the life of the loan. It is calculated as total amount paid (monthly payment times number of payments) minus the principal.
Yes, as long as the loan uses a fixed interest rate and is amortized over a set term, such as personal loans, auto loans, or mortgages.
