Mortgage Payment Calculator This calculator will compute a mortgage loan's monthly payment amount based on the principal amount borrowed, the length of the loan and the annual interest rate. Once you have computed the monthly payment, click on the "Create Amortization Schedule" button to create a report you can print out. Note that each time you change one of the loan's variables you will need to recalculate the monthly payment before creating the Amortization Schedule. Loan Amount ($): Interest rate: % Length of loan in months? Months Compounding Interval: Monthly Quarterly Semi-Annually Annually Loan Start Date: January February March April May June July August September October November December 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 Estimated (P/I) monthly payment: *Principal and interest only - does not include property taxes, insurance, etc