I run a CPA firm, and I billed my clients $50K during the month of February. To earn that $50K, I incurred $20K of wage expense and another $10K of overhead (rent, utilities, insurance, etc.). So I made $20K profit, right? So I am sitting pretty? Not necessarily. What if I now tell you that $40K of my billings have yet to be collected? And my E&O insurance carrier increased my premium and I had to pre-pay $10K of premiums this month. How does my cash flow differ from my profit? Will these transactions appear on my income statement? My cash-flow statement?