Arizona Revised Statutes Title 25. Marital and Domestic Relations § 25-202. Enforcement of premarital agreements;  exception

A. A premarital agreement must be in writing and signed by both parties.  The agreement is enforceable without consideration.

B. The agreement becomes effective on marriage of the parties.

C. The agreement is not enforceable if the person against whom enforcement is sought proves either of the following:

D. If a provision of a premarital agreement modifies or eliminates spousal support and that modification or elimination causes one party to the agreement to be eligible for support under a program of public assistance at the time of separation or marital dissolution, a court, notwithstanding the terms of the agreement, may require the other party to provide support to the extent necessary to avoid that eligibility.

E. An issue of unconscionability of a premarital agreement shall be decided by the court as a matter of law.

F. If a marriage is determined to be void, an agreement that would otherwise have been a premarital agreement is enforceable only to the extent necessary to avoid an inequitable result.