Should I hire a CPA for my firm? Thats a common question of many entrepreneurs and small business owners. Yes, you need a CPA for your firm, and in this post 3phaseac we give you 11 good reasons why you should find a reliable service now.1. Because the tax laws are changing. You are an entrepreneur not an ccountant. It is hard to keep a check on the changing tax laws and norms and for that you need to access the RS Website all the time. Hire a who can do that for you.