From FreelanceSwitch:
Once you have left the land of COLA raises, paid sick days, and employer-matched 401Ks, not only do you need to be the writer/programmer/web designer for your business, you also need to be your own CFO.
Here are some absolutely necessary components for your business (and life) financial portfolio:
See the List
Related Reading:
Finance for Managers (Harvard Business Essentials)
High Finance
Finance (Barron's Business Review Series)