For the old pros out there and for those who have a good business sense, how are you guys/gals figuring out your operating cost? Example..how much it cost you per day, hour, month or which ever, it cost you to operate? What factors do you use to determine this? I want to determine an accurate and realistic dollar amount of my "REAL" operating expense's to project an accurate gross/net profit margin. I've been in this business going on 8 years now and have always looked at it like, "If I'm making enough money to pay the bills and have some left over then I'm doing OK". But now I want to keep a tight leash on what my true margins are so I can grow as a "PROFITABLE" business. Not only that, but to have the ability to bid on jobs that will turn a profit based on "MY" company. Thanks in advance for your advice!