Calculation
Florida: Florida no longer awards permanent alimony for initial petitions governed by the current statute. Courts may award temporary, bridge-the-gap, rehabilitative, or durational alimony only after making specific factual findings that the requesting spouse has actual need and the other spouse has ability to pay. Durational alimony is capped at reasonable need or 35% of the parties' net-income difference, whichever is less. 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.
Duration
Florida: Florida classifies marriages as short-term if less than 10 years, moderate-term if 10 to less than 20 years, and long-term if 20 years or more. Bridge-the-gap alimony may not exceed 2 years. Rehabilitative alimony may not exceed 5 years and requires a specific rehabilitative plan. Durational alimony may not be awarded after a marriage lasting less than 3 years. Durational alimony may not exceed 50% of a short-term marriage, 60% of a moderate-term marriage, or 75% of a long-term marriage, except under exceptional circumstances proven by clear and convincing evidence. 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.
Modification
Florida: Most alimony awards may be modified upon a substantial, material, and unanticipated change in circumstances. The party requesting modification must demonstrate that the statutory standard has been satisfied. 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.