Are you asking how to figure out an amount to ask your tenants to pay in rent? If that's the case then setting a rent amount is the same as setting a listing price when selling your home. Renters don't care how much you pay for the motgage, taxes, insurance, etc., they only care what Joe Schmoo down the street pays in rent. The market dictates how much one can ask. You would need to get comps on other rentals in your neighborhood. Then you decide how your property matches up to similar rentals in that area. Look at number of bedrooms, baths, size of home, lot, garages, updated fixtures, proximity to transportation, etc.