Most people entering a Phoenix divorce carry a mental model of alimony built from word of mouth, television, or the rules of a state they used to live in. Some assume Arizona courts punish infidelity with higher support awards. Others believe a long marriage automatically guarantees a lifetime payment. Neither is true, and operating on either assumption going into a negotiation or a hearing can cost significantly more than the mistake is worth.
Arizona has overhauled its spousal maintenance system twice since 2022, moving from a purely discretionary framework to a structured, formula-driven one. The most recent revision took effect September 1, 2025. Understanding what changed, what stayed the same, and how Maricopa County courts actually apply these rules is the foundation of any realistic plan for what you’ll pay or receive.
Our team at BDB Law, which includes a Board-Certified Family Law attorney, has guided clients through both rounds of guideline changes. What follows is a current explanation of how the system works.
How Arizona Spousal Maintenance Law Changed in 2022 & 2025
Before September 24, 2022, amount and duration in Arizona spousal maintenance cases were left almost entirely to judicial discretion. Judges across the Maricopa County bench reached different outcomes on similar facts, and parties had limited ability to predict what a trial would produce. That changed when the Arizona legislature amended A.R.S. § 25-319 to direct the Arizona Supreme Court to establish binding Spousal Maintenance Guidelines.
The Court adopted the first Guidelines effective July 2023, replacing open-ended discretion with a calculator-based presumptive range for both amount and duration. Then, under Arizona Supreme Court Administrative Order 2025-101, a second revision took effect September 1, 2025. That revision generally applies to all maintenance orders entered on or after that date, including modifications of existing orders, with limited exceptions such as default cases. If your case is filed now, the 2025 version governs.
Step One: Qualifying for Spousal Maintenance in Arizona
The guidelines only apply after a court finds that the requesting spouse qualifies under A.R.S. § 25-319(A). That statute lists five independent grounds, and at least one must be met before any calculation begins. No amount of income disparity or marriage length overrides a failure to meet the threshold.
The five qualifying grounds are:
- Insufficient property for reasonable needs after dividing marital assets
- Inability to be self-sufficient through employment given earning capacity, education, and job history
- Caretaking of a child whose age or condition makes employment inappropriate for the requesting spouse
- Significant contribution to the other spouse’s education or career that reduced the requesting spouse’s own earning ability
- Long marriage and limited employability that prevent adequate self-sufficiency at the standard of living established during the marriage
One point that surprises many clients: marital misconduct, including infidelity, is explicitly excluded from both the eligibility determination and the amount calculation under A.R.S. § 25-319(C). A spouse who was unfaithful doesn’t pay more, and a spouse who was wronged doesn’t automatically receive more. Courts are instructed to disregard it entirely.
Step Two: How the Guidelines Calculate Amount & Duration
Once eligibility is established, the court applies the Arizona Spousal Maintenance Guidelines formula. The calculator takes the parties’ incomes, adjusts for family size, and produces a presumptive monthly amount range. As of September 2025, mortgage principal is excluded from the income figures used in that calculation. Before 2025, including mortgage principal inflated the income basis and, in many cases, raised the calculated award. Its removal generally reduces calculated output for homeowners and changes how both sides should frame their opening positions in negotiation.
Duration is addressed separately from amount and follows its own set of ranges tied to marriage length. For marriages lasting 16 or more years that don’t qualify under the Rule of 65, the 2025 revision raised the standard maximum duration from 96 months to 144 months or 50 percent of the marriage length, whichever is greater. A 20-year marriage could now produce a guideline duration of up to ten years under the standard range alone.
Courts can deviate from the presumptive amount range, but they must put their reasoning in writing. Duration deviations are more constrained: courts can only depart from the standard range in three situations.
- Permanent disability of the receiving spouse
- Rule of 65 qualification (covered in the next section)
- Extraordinary circumstances that the court articulates on the record
The written-findings requirement for amount deviations gives both parties a meaningful basis for appeal. Duration deviations face a narrower gate, which is why how you present facts at the hearing can matter as much as what the facts are.
The Rule of 65: What It Is & When It Applies
The Rule of 65 is a threshold test, not a separate type of maintenance. It applies only when all three of the following are true: the requesting spouse is at least 42 years old, the marriage lasted at least 16 years, and the requesting spouse’s age plus years married equals or exceeds 65. A 45-year-old spouse exiting a 20-year marriage qualifies, with a combined total of 65. A 48-year-old exiting a 15-year marriage doesn’t, because 15 years falls short of the 16-year floor.
When the Rule applies, the court steps outside the standard duration range entirely and determines duration on a case-by-case basis. The 2025 revision already raised the standard ceiling for long marriages to 144 months, so the Rule of 65 matters most for spouses whose age and marriage length signal genuine long-term self-sufficiency challenges. This is typically true for those who reduced or exited the workforce for a significant portion of a 20-plus-year marriage and face limited time to rebuild earning capacity before traditional retirement age. It isn’t a path to indefinite support, but it’s the primary mechanism through which a Phoenix divorce can produce an award that extends well beyond 12 years.
Modification, Termination, & What Comes After the Divorce
Maintenance ends automatically on the death of either party or the remarriage of the receiving spouse under A.R.S. § 25-327(B). Cohabitation is different. A receiving spouse who moves in with a romantic partner doesn’t trigger automatic termination under Arizona law. It can, however, support a modification petition if the cohabiting relationship substantially reduces the receiving spouse’s financial need, such as when a live-in partner covers rent and shared expenses. The paying spouse would need to demonstrate that the underlying financial circumstances have shifted enough to justify a reduction.
The burden of proof in modification proceedings depends on the type of award in place. For fixed-term awards, the receiving spouse bears the burden of proving continued need if seeking to extend the duration. For indefinite awards, that burden flips: the paying spouse must demonstrate a substantial and continuing change in circumstances to terminate or reduce the obligation. This distinction matters when structuring a settlement, because the type of award determines which party faces the harder legal task if circumstances change.
A party who stops paying without a court modification order faces real consequences. The Family Department of the Maricopa County Superior Court handles enforcement, and unpaid maintenance can be collected through the Arizona Support Payment Clearinghouse, with additional sanctions including license suspension and contempt of court available to the court.
What the 2025 Changes Mean for Your Maricopa County Case
The 2025 revision recalibrated how the guidelines handle higher-income households. Previously, the high-income adjustment to the calculator began at combined family income of $100,000. Under the revised guidelines, that threshold moved to $175,000 and the maximum upward adjustment was reduced from 80 percent to 70 percent. In practical terms, cases where one or both spouses earn well above the median are more likely to produce lower calculated awards in 2025 than the same facts would have generated under the 2023 model.
The Maricopa County Superior Court hosts its own Spousal Maintenance Calculator at superiorcourt.maricopa.gov, built to reflect the current guidelines. Anyone using an older version, including printouts from third-party sites that haven’t updated their tools, may be running numbers against pre-September 2025 parameters. Before any mediation session or settlement discussion, both sides should run the current court-provided calculator rather than relying on an outdated estimate. The guidelines are also local in a meaningful sense: the 2025 revisions were calibrated against actual Maricopa County outcomes from orders issued between September 2023 and August 2024, which is one reason a national or out-of-county framing of Arizona maintenance law often misses the mark for Phoenix cases.
The Guidelines Are a Starting Point, Not the Final Word
The guidelines create a presumptive range, not a predetermined result. Where a court lands within that range depends on how each spouse’s financial circumstances are documented and presented, what attributed income arguments are made, which deviation factors are argued and supported by evidence, and how the Rule of 65 analysis is framed if it applies.
Effective strategy in a spousal maintenance case means understanding the formula well enough to know where the leverage points are before walking into negotiation or a hearing. At BDB Law, our attorneys bring over 80 years of combined experience in Arizona family law, and our team includes a Board-Certified Family Law attorney whose credentials place him among a small fraction of practitioners in the state. If you have questions about how the current guidelines apply to your situation, we’re available to discuss them at (602) 878-3133.