How Alimony Is Calculated
Alimony — also called spousal support or maintenance — is the most unpredictable number in a divorce. Two couples with nearly identical finances can walk away with very different awards depending on the state, the judge, and the story behind the marriage. Unlike child support, most states have no fixed formula. Here's what actually drives it.
Why there's no national formula
Child support is formula-driven in every state because the goal is narrow: cover a child's costs. Alimony is fuzzier. Its purpose is to limit the economic damage a divorce does to a lower-earning spouse, and what's "fair" depends entirely on context. So most states give judges a list of factors to weigh rather than an equation to run. Some states and counties publish guideline formulas, but even those are advisory — a judge can depart from them.
The factors judges weigh
While the exact list varies, courts across the country consider some combination of:
- The income gap between the spouses, and each one's earning capacity
- Length of the marriage — longer marriages support longer or larger awards
- Standard of living established during the marriage
- Age and health of each spouse
- Contributions to the marriage, including a spouse who left the workforce to raise children or support the other's career
- Time and training needed for the lower earner to become self-supporting
- Each spouse's assets after property division
- In some states, marital fault such as adultery
Separate a budget scenario from a support award
A household budget can show the effect of a payment without claiming that a court would order it. Our support budget comparison subtracts a payment you choose from one household and adds it to the other. It supplies no recommended payment or duration.
Questions about duration
Ask your adviser which type of support applies, whether the applicable law sets limits or presumptions, and what could change or end an order. Do not convert years married into a national rule of thumb.
Check the agreement date for federal taxes
The IRS distinguishes agreements executed before 2019 from those executed after 2018. Payments under post-2018 agreements are not deductible by the payer or included in the recipient's gross income. Earlier agreements generally follow the prior treatment, unless a later modification expressly adopts the repeal. The execution and modification terms matter, not simply the divorce-finalization date. Confirm your circumstances with a tax professional. IRS Topic 452.
Prepare a useful comparison
Bring income records and an expense list for each household. Compare several payments of your own choosing using the budget worksheet, then ask a qualified adviser which assumptions and support rules need checking. A balanced budget is not evidence of legal entitlement.
Affiliate disclosure: Divorce Number may earn a commission if you sign up through links marked "affiliate," at no extra cost to you. We only link to services we think are genuinely useful for the topic at hand.
General education, not legal or tax advice. Alimony rules vary widely by state and the award is ultimately a judge's decision. Confirm with a licensed attorney.