You mean to create an incentive system like in the private sector, where if you make budget you get a bonus and the better you manage your budget, then the higher the bonus.... Nahhhhhh
I remember when I worked for Pepsico. They were straight up about it. We pay you 85% of your expected salary. If you meet you budget you'll get the other 15%, however the better you do the more money in your pocket, up to 150% of you expected salary. Oh and if you can't make budget you better have a damn good reason, fail to make budget twice without said damn good reason, there's the door, don't let it catch you in the backside on the way out...