Business owners who "manage by the numbers" are ahead of the game. One important number to know is the business break-even point. This is the point during the month at which your sales revenue equals total costs. After reaching the monthly break-even point, your business begins to make a profit. The break-even point is not generated by most accounting software, nor is it one that is normally produced by your accountant, but it is an important number for you to know and understand.