Writing off expenses and keeping track of the same can help business owners retain most of their hard earned cash to themselves.These include:  The cleaning supplies and services  Property depreciation  Property insurance and private mortgage Insurance PMI.  Service fees by Airbnb  Mortgage loan Interest.  Bed and Breakfast supplies like coffee, food, and disposable bathroom supplies.  Property utilities like gas, water, electricity, cable TV and Wi-Fi  Advertising cost.