Monthly payment for a fixed-rate loan or mortgage
Enter amount needed, downpayment, annual interest rate and loan term to work out the monthly payment for a fixed-rate loan or mortgage.
Give it the amount you need, the downpayment, the rate and the term. It takes the downpayment off the top and works out the level payment that clears what is left.
The payment never changes. What it buys does. Nearly all of the first one is interest and nearly all of the last one is principal, so the balance barely moves in the early years. You pass the halfway mark on the debt long after the halfway mark in time.
This is principal and interest. Property tax, insurance, PMI, HOA dues and lender fees sit on top of it, and on a house they are not small. The rate is taken as fixed for the full term.