This document provides steps to calculate how much you can afford for housing costs each month and annually. It instructs you to take your monthly income, subtract fixed debts like loans and bills, subtract estimated costs for food, savings and entertainment. The remaining total is how much you can afford for monthly housing. Multiply this by 12 to get an annual amount and by the number of years for a loan term, like 30 years, to determine the price of a home you can afford.