I recently attended a conciliation conference where no other lawyer in the room knew that the tax deduction for spouse maintenance will expire in 2019. If you think you are getting divorced or that you can legally separate and alimony is paid, seek legal advice on collaborative law, stat. In the absence of an agreement, you can get stuck in the negotiation and argue over the amount of alimony and the duration. And remember that there is no spouse maintenance calculator or spouse maintenance guideline in Arizona! In particular, concubine agreements are applicable in Arizona. In some cases, the courts have found confidence in the property of a person cohabiting with another person, the property being considered to be held for the benefit of its national partner.