I have an audit every year myself.
Part one is to determine the workmans comp, and I have no argument on that one.
Part 2 is to determine your General Liability rates. This one I have concerns about. They base my premiums off of revenues. I understand this method to a point but if I were to raise all my prices 20% my insurance would go up and the Insurance company would have had no additional exposure.
With this said I'm fairly happy with my rates so I wont rock the boat to much right now.