Calculation
Michigan: Conservative educational estimate based on need, ability to pay, income disparity, marriage length, marital standard of living, earning capacity, property division, health, age, and Michigan spousal-support factors; no mandatory statewide formula applies. Pennsylvania: Pennsylvania guideline spousal support and APL are typically calculated using net-income percentages: 33% of payer net income minus 40% of recipient net income when there are no dependent children (25%/30% when dependent children are involved). Post-divorce alimony has no mandatory formula and instead requires courts to balance statutory factors under § 3701.
Duration
Michigan: Michigan has no fixed statutory duration formula. The court may award support for a short rehabilitative period, a longer transition period, an indefinite period in appropriate long-marriage or disability cases, or no support. Duration depends on need, ability to pay, marriage length, earning capacity, age, health, property division, and equity. Support may terminate or be modified under the order, agreement, remarriage or cohabitation provisions if included, death, changed circumstances, or court order. Pennsylvania: Pennsylvania has no fixed statutory duration formula for post-divorce alimony. The court determines duration as reasonable under the circumstances and may order alimony for a definite or indefinite period. Spousal support and alimony pendente lite generally last only during separation or while the divorce case is pending.
Modification
Michigan: Periodic alimony may generally be modified upon a substantial change in circumstances unless a judgment or agreement limits modification. Courts review changes affecting financial need, earning capacity, or ability to pay. Pennsylvania: Most Pennsylvania alimony awards may be modified upon a substantial and continuing change in circumstances unless the parties agreed otherwise. Courts evaluate financial changes affecting need, ability to pay, or overall fairness.