Is there anyway for a beginner to figure profit margins? I have mine at 29% after crunching numbers. That is 40 residential clients at $25 each, close to home to lessen drive time/ gas $$, 1 hour per job since I am flying solo. Is 71% of my gross income realistic for expenditures on equipment maintenance, gas, advertising, etc? Thanks Ready to kick Corporate America in the a$$ and get to real work!!