Generally, community property is property acquired during the course of the marriage.  Any interest in your business that you developed BEFORE marriage is a separate property interest.  Generally, the increase in the value of the business during the course of the marriage is community property.So, she would be entitled to one half of the INCREASE in the value of the business during the marriage.  There are a few different ways of calculating that increase (lookup Perreira and Vancamp).  However, if you business decreased in value during the marriage, then there would be no community interest at all.You should really consult with a local family law attorney and have them help you in this matter.  These are surprisingly complicated legal issues and you want to ensure the best resolution to your case.Cameron Norris