Child support, alimony and settlement calculators

Free Alimony & Spousal Support Calculator

This alimony calculator (spousal support calculator) uses the limits and formulas written into state law. Pick your state.

Full guide for this calculator →
$/mo
$/mo
years
From the wedding to the date the divorce was filed.
Receiving spouse's monthly need (optional)
$/mo
Reasonable monthly expenses the receiving spouse cannot meet from their own income.
Most durational alimony allowed
$1,750.00
per month, for up to 7.2 years
Difference in net incomes$5,000.00
35% of the difference (amount cap)$1,750.00
Marriage length categoryModerate-term
Bridge-the-gap alimony limit2 years
Rehabilitative alimony limit5 years

These are the legal maximums under s. 61.08. A court first decides whether there is a need and an ability to pay, and can award less or nothing.

Estimate only, not legal advice. This calculator applies the published rules to the numbers you enter. A judge can order a different amount, and the result depends on how income is proven in your case. Settle101 is not a law firm. For advice on your situation, talk to a family-law attorney, legal aid or your state's child support agency.

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How alimony is decided

A court first asks whether one spouse needs support and the other can afford to pay it. Then it looks at factors set out in state law. These usually include:

  • the length of the marriage
  • each spouse's income, earning capacity and education
  • the standard of living during the marriage
  • age and health
  • contributions as a homemaker or to the other spouse's career
  • responsibilities for the children
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States with a written alimony or spousal support rule

  • Florida: since 1 July 2023, durational alimony may not exceed 35% of the difference in net incomes or the receiving spouse's need, and has a maximum length based on the marriage. Florida alimony calculator.
  • California: Santa Clara County's local rule sets temporary spousal support at generally 40% of the higher earner's net income minus 50% of the lower earner's. California alimony calculator.
  • Texas: court-ordered spousal maintenance is capped at the lesser of $5,000 a month or 20% of the paying spouse's gross income, for 5 to 10 years depending on the marriage. Texas alimony calculator.

In states without a formula, a lawyer's estimate based on local court practice is the most reliable guide.

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Frequently asked questions

Is there a formula for alimony?

Only in some states. Most states leave the amount to the judge, who weighs factors such as the length of the marriage, each spouse’s income and earning capacity, and the standard of living. Florida sets a legal maximum (35% of the difference in net incomes) and time limits; Santa Clara County’s court rules set a formula for temporary support while the divorce is pending.

What is the difference between alimony and spousal support?

They mean the same thing: money one spouse pays the other after separation or divorce. Florida law says "alimony"; California law says "spousal support"; some states say "maintenance".

How long does alimony last?

It depends on the state and the length of the marriage. In Florida durational alimony cannot exceed 50%, 60% or 75% of the marriage length for short, moderate and long marriages. In California support for a marriage under 10 years generally lasts about half its length; marriages of 10 years or more have no set end date.

Why does this alimony calculator only cover some states?

An honest spousal support calculator needs a rule written in law or court rules. We cover states where one exists and explain the factors elsewhere, rather than inventing a number a court would not use.

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