Alimony / Spousal Support Calculator by State

Alimony is where state law differs most. A few states write a formula or a duration limit into the statute, while most leave the amount and length to a judge weighing factors. Pick a state below for the rule that actually applies, cited to the law.

9 of 51 states live FigureMyTax Editorial Team Free · no sign-up

What's in an alimony answer

Each state page explains how that state handles alimony: whether the law sets a formula, a cap or a duration limit, which factors a judge weighs when it does not, and what ends or changes an award. States use different names for it — Illinois and Texas, for example, call it maintenance. Every legal figure is tied to a cited source; see our methodology for how we verify each one.

Where states write a formula or a limit into law

Only some states put numbers in the statute. Examples we have read in the law itself:

  • Illinois — guideline maintenance is 33 1/3% of the payor's net annual income minus 25% of the payee's, and the payee's total cannot exceed 40% of combined net income; the guidelines apply when combined gross income is under $500,000 and certain other conditions are met (750 ILCS 5/504).
  • New York — when child support is also being paid, temporary maintenance is the lower of two formulas: 20% of the payor's income minus 25% of the payee's, or 40% of combined income minus the payee's income (DRL 236-B).
  • Colorado — advisory guidelines start from 40% of the parties' combined monthly adjusted gross income minus the lower earner's income, reduced in some cases when the award is not tax-deductible (C.R.S. 14-10-114).
  • Massachusetts — for marriages of 20 years or less, general term alimony is limited to 50% to 80% of the length of the marriage depending on its length (M.G.L. c. 208, § 49).
  • Texas — court-ordered maintenance is capped at the lesser of $5,000 a month or 20% of the spouse's average monthly gross income (Tex. Fam. Code 8.055).
  • Florida — durational alimony cannot exceed 50%, 60% or 75% of the length of a short, moderate or long marriage, and is not awarded after a marriage of less than three years (Fla. Stat. 61.08).

Where a state sets no formula, its page shows the statute, the factors and any duration limit — never a dollar amount the state's law does not establish.

Every state page provides general guidance only and is not legal advice. Figures are based on cited state statutes and official sources, verified per our methodology. Confirm how the law applies to your specific situation with a licensed attorney in your state before acting.