CalcKitHow to Use the Mortgage Calculator
A mortgage is usually the biggest financial commitment of your life, so understanding the monthly payment before you buy is essential. A mortgage calculator estimates your monthly payment from four numbers: the home price, your down payment, the interest rate and the loan term.
Enter those four values and press Calculate Mortgage. You'll see the monthly payment for principal and interest, the down payment amount, the total interest paid over the life of the loan, and the true total cost of the home. Comparing a 30-year and a 15-year term side by side is eye-opening: the 15-year payment is higher, but the total interest is often less than half.
Three levers move your payment the most. A bigger down payment shrinks the loan directly. A lower interest rate compounds over decades โ even 0.5% matters on a large loan. And a shorter term trades a higher monthly payment for dramatically less interest. As a rule of thumb, lenders like your housing payment to stay under about 28% of gross monthly income.
Note that this calculator covers principal and interest only. Your real monthly bill also includes property tax, homeowner's insurance and possibly HOA fees or private mortgage insurance (usually required when the down payment is under 20%). For a general-purpose loan check, see our EMI / Loan Calculator.