CALCULATOR
Loan Interest Calculator
Enter principal, annual interest rate, and repayment term to estimate an amortized monthly payment.
Estimate payments and total interest for different repayment methods.
Result
Monthly payment 506,685
Total payment 182,406,712
Total interest 82,406,712
Number of payments 360
Principal and interest over time
Month 360
Principal paid100,000,000
Interest paid82,406,712
Balance0
How this calculator works
The estimate converts the annual rate to a monthly rate and applies equal monthly amortization.
Fees, taxes, variable rates, grace periods, and lender-specific rounding are not included.
Calculation example
Example input: Principal 100,000 · Annual rate 5% · Term 10 years
Result: The calculator estimates an equal monthly payment and total interest over 120 months.
Frequently asked questions
Which repayment method is used?
The estimate uses equal monthly amortization, where the total monthly payment stays consistent.
Are fees and variable rates included?
No. Fees, taxes, grace periods, variable-rate changes, and lender-specific rounding are excluded.