Only thing good about a full time job is the benefits and vacation, if your not getting those things than it's not worth it. Also depends on how many hours a week the full time position will require, if they expect you to work a long day then contracting is always better. $90 hr x 50 hr work week = $4,500 a week. $4,500 a week x 24 weeks (6 month project) = $108,000 $115,00 per year / 2 (6 month project) = $57,500 How much will benefits cost for 6 months? $108,000 - cost of benefits = true earnings