Are prenups enforceable in Arizona?

Yes. Arizona has adopted the Uniform Premarital Agreement Act, found in the Arizona Revised Statutes beginning at Section 25-201. A premarital agreement must be in writing and signed by both parties, and it becomes effective when the couple marries. Because Arizona is a community property state, a prenup is the main tool a couple has to change how property would otherwise be treated. Your attorney can explain how the statute applies to your situation.

Under Arizona Revised Statutes Section 25-202, the party trying to avoid the agreement has to prove either that they did not sign it voluntarily, or that it was unconscionable when signed and, before signing, they were not given fair disclosure of the other party’s finances, did not waive further disclosure in writing, and could not reasonably have known those finances. Full and fair disclosure is a strong defense against an unconscionability challenge, and whether an agreement is unconscionable is decided by the court, not a jury. A well-documented agreement with independent counsel on each side is much harder to challenge.

Arizona is one of only nine community property states. Without an agreement, property that either spouse earns or acquires during the marriage is generally presumed to be community property owned equally, regardless of whose name is on the paycheck, account, or title. A prenup is how a couple can define what stays separate and change that default. In an equitable-distribution state a court weighs fairness factors, but in Arizona the starting presumption is joint ownership, which makes an agreement especially relevant. Your attorney can review how this applies where you live.

No. Arizona’s statute requires only that the agreement be in writing and signed by both parties. Notarization and witnesses are not required by law, though keeping clear records of disclosure and independent advice is still a good idea to support the agreement if it is ever questioned. Your attorney can advise on the steps that best support enforceability.

Generally yes, if the agreement was signed voluntarily, followed fair disclosure, and is not unconscionable. There is an important limit: Arizona law does not enforce a spousal support waiver to the extent it would leave a spouse eligible for public assistance at separation or divorce, and a court can order support to avoid that outcome regardless of the agreement. Your attorney can explain how to address maintenance in a way that reflects this rule.

Arizona adopted statewide spousal maintenance guidelines that took effect in 2023 and have since been updated, giving courts a formula-based approach to the amount and duration of maintenance under the state’s statute. The result depends on factors like the length of the marriage. A prenup lets a couple decide their own approach to support in advance instead of relying on how the guidelines would apply later. Your attorney can explain the current framework.

No. A disclaimer deed is a narrower Arizona document, often required by a lender, in which one spouse disclaims an interest in one specific property so it can be treated as the other spouse’s separate property. It covers a single asset. A prenup is comprehensive and covers current and future property and debt across the marriage. The two are different tools, and your attorney can explain when each is used.

Traditional attorney-drafted prenups vary, and when each partner retains a separate attorney, a couple is paying for two lawyers. With hourly billing the total is hard to predict and rises with business interests or multiple properties. Neptune offers a $5,000 flat fee per couple that includes two independent Arizona-licensed attorneys, one for each partner, with no hourly billing and no payment required to start.

When both partners use Neptune attorneys, turnaround is typically around 3 to 4 weeks, including drafting, independent review, disclosure, and negotiation. Signing well before the wedding, rather than under time pressure, supports the voluntary signing Arizona courts look for. Rush pricing applies when the wedding is within 45 days.