Mortgage Mechanics Tools — Property Decision Desk

Split a monthly payment into principal, interest, taxes, and insurance.

See how little principal you build in the early years of a mortgage.

Estimate when you reach 20% equity and what PMI costs until then.

Months to recover discount points from the monthly payment saved.

See years cut and interest saved from extra monthly principal.

Measure how a rate move changes your payment and total interest.

Preview the payment jump when an adjustable rate resets higher.

Quantify the payoff speedup from paying half your mortgage every two weeks.

Find the month your payment finally puts more toward principal than interest.

Compare two loan offers on payment, lifetime interest, and fees — side by side.