Total Interest Formula:
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This calculator helps you determine the total interest you'll pay on a personal loan based on your monthly payment amount, loan principal, and loan term.
The calculator uses the formula:
Where:
Explanation: The formula calculates the total amount paid over the life of the loan and subtracts the principal to determine just the interest portion.
Details: Understanding the total interest helps borrowers compare loan offers and make informed decisions about loan terms and amounts.
Tips: Enter the loan term in months, your monthly payment amount, and the original loan amount. All values must be positive numbers.
Q1: Does this calculator account for variable interest rates?
A: No, this assumes a fixed interest rate and fixed monthly payments throughout the loan term.
Q2: How can I reduce my total interest paid?
A: You can reduce total interest by choosing a shorter loan term, making extra payments, or securing a lower interest rate.
Q3: Why is my total interest higher than I expected?
A: Longer loan terms and higher interest rates result in more interest paid over time, even with smaller monthly payments.
Q4: Does this include loan fees?
A: No, this calculation only includes the interest portion of your payments, not any upfront fees.
Q5: Can I use this for other types of loans?
A: Yes, this works for any fixed-rate installment loan (auto loans, personal loans, etc.), though specialized calculators may provide more detailed results.