Calculation
Alabama: Alabama has no mandatory mathematical formula for alimony. Courts may award rehabilitative or periodic alimony only after finding that the requesting spouse lacks sufficient separate estate or resources to preserve, as much as possible, the economic status quo of the marriage; that the other spouse can pay without undue economic hardship; and that the circumstances make an award equitable. Rehabilitative alimony is preferred when feasible. Arizona: Educational approximation of Arizona's guideline range using a conservative income-disparity proxy: 20% of the difference between payer spousal-maintenance income and recipient spousal-maintenance income, adjusted for marriage length and self-sufficiency factors.
Duration
Alabama: Rehabilitative alimony is generally limited to 5 years absent extraordinary circumstances. Periodic alimony is generally limited to a period not exceeding the length of the marriage, unless the court finds deviation is equitably required. For marriages of 20 years or longer, there is no statutory time limit on eligibility for periodic alimony. If no alimony is awarded and jurisdiction is not reserved at the time of divorce, the court generally loses jurisdiction to later award rehabilitative or periodic alimony. Arizona: Arizona guideline duration is tied to marriage length and self-sufficiency. Standard ranges are: under 24 months of marriage, 3-12 months; 24 to under 60 months, 6-36 months; 60 to under 120 months, 6-48 months; 120 to under 192 months, 12-60 months; and 192 months or more, 12-144 months or 50% of the marriage length, whichever is greater, unless the Rule of 65, disability, or extraordinary circumstances apply. The Rule of 65 applies when the requesting spouse is at least 42, the marriage lasted at least 16 years, and age plus marriage length equals or exceeds 65; in those cases duration is determined case-by-case.
Modification
Alabama: Periodic alimony may generally be modified upon a material change in circumstances. Rehabilitative alimony may be modified before the end of its term when statutory standards are met, while alimony in gross is typically treated as a fixed property-like obligation. Arizona: Spousal maintenance may generally be modified upon a substantial and continuing change in circumstances unless the decree expressly makes maintenance non-modifiable. Courts review changes affecting need, income, employability, or ability to pay.