Calculate monthly principal, interest, property taxes, home insurance (PITI), and full amortization schedules across 15 and 30-year loans.
Determine maximum affordable home price and monthly mortgage budget based on gross income, down payment savings, and existing debt.
Determine the exact month when your monthly payment savings exceed upfront refinance closing costs to ensure refinancing is profitable.
Compare unrecoverable ownership costs (property taxes, maintenance, PMI) against renting and investing down payment cash in index funds.