Alimony Calculator 2026 — Estimate Spousal Support Payments

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Alimony Calculator

Spousal support estimate · 2026

Spouse Incomes (Annual Gross)

Higher-Earning Spouse ($)

Annual gross income (payor)

Lower-Earning Spouse ($)

Annual gross income (recipient)

Marriage Details

Length of Marriage (Years)

State / Approach

Factors

Standard of Living During Marriage

Lower-Earning Spouse's Situation

Minor Children?

Fault / Misconduct?

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Enter both spouses' incomes and marriage details to estimate spousal support.

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How Alimony Is Determined

Alimony (also called spousal support or maintenance) is financial support paid by one spouse to the other after separation or divorce. Unlike child support, there is no universal formula — courts have broad discretion and consider many factors. The most important are: the income disparity between spouses, the length of the marriage, the standard of living during the marriage, each spouse's earning capacity, and whether one spouse left the workforce to support the family.

The most widely used estimation approach is a percentage of the income gap between spouses — typically 30-40% of the difference between the higher and lower earner's gross incomes, with adjustments for marriage length, situation, and state-specific factors. Duration is typically half the length of the marriage for marriages under 10 years, and potentially indefinite for long marriages (20+ years).

Types of Alimony

Temporary (pendente lite): during divorce proceedings. Rehabilitative: short-term, supports lower earner while gaining skills/education to become self-sufficient. Reimbursement: compensates a spouse who supported the other through education/career advancement. Permanent: ongoing support, usually for long marriages or when self-sufficiency is impossible. Lump-sum: one-time payment instead of periodic payments.

Factors Courts Consider

Length of marriage (most important), income and earning capacity of each spouse, standard of living during marriage, contributions to the marriage (including homemaking/childcare), age and health of each spouse, whether one spouse left the workforce, educational level and work history, time needed to become self-supporting, fault (in fault-divorce states).

Tax Treatment (Post-2019)

Under the Tax Cuts and Jobs Act (TCJA), for divorce agreements finalized after December 31, 2018: alimony is NOT deductible by the payor and NOT taxable income to the recipient. Agreements from 2018 or earlier retain the old treatment (deductible/taxable) unless modified. This is a significant change that affects negotiating strategy and net cost to both parties.

State Variations

California: no fixed formula, "need and ability to pay." New York: 30% of payor income minus 20% of recipient income (capped at 40% combined). Illinois: statutory formula based on gross incomes. Massachusetts: various factors with durational guidelines. Texas: limited to 3 years (max), rarely awarded. Florida: reformed in 2023, no more permanent alimony, durational limits by marriage length.

This calculator provides estimates for informational purposes only. Alimony is highly discretionary and varies enormously by state, judge, and specific circumstances. This is not legal advice. Always consult a licensed family law attorney in your state.

Frequently Asked Questions

How is alimony calculated in the US?+

Unlike child support, alimony has no universal federal formula. Most states leave it to judicial discretion guided by statutory factors. A commonly used rule-of-thumb is 30-40% of the income gap between spouses (the higher earner's income minus the lower earner's income), adjusted for marriage length and other factors. A few states have adopted formulas: New York uses 30% of payor's income minus 20% of recipient's income (capped at 40% of combined). Illinois has a statutory formula. California has no formula. Courts can deviate from any guideline amount based on specific circumstances.

How long does alimony last?+

Duration depends heavily on marriage length. General guidelines: marriages under 5 years: 1-2 years (rehabilitative only). 5-10 years: 25-50% of marriage duration. 10-20 years: 50% of marriage duration is common. Over 20 years: potentially indefinite or until retirement. Courts consider whether the recipient can become self-supporting and how long that will take. Permanent alimony is becoming rarer as many states have reformed their laws. Florida eliminated permanent alimony in 2023. Most modern alimony awards are rehabilitative with specific end dates.

Is alimony tax-deductible in 2026?+

For divorces finalized on or after January 1, 2019 (under the Tax Cuts and Jobs Act): alimony is NOT deductible by the payor and NOT taxable income to the recipient. It's treated like a gift for tax purposes. For divorces finalized before 2019: the old rules still apply (deductible by payor, taxable to recipient) UNLESS the agreement is modified after 2018 and the modification specifically states it's subject to the new rules. This change significantly affects the economics of alimony — it costs the payor more in after-tax dollars and benefits the recipient more than under the old deductible/taxable structure.

Can alimony be modified or terminated?+

Yes, in most cases. Modification: either party can request modification if there is a substantial change in circumstances — significant income change (job loss, promotion, retirement), change in needs, cohabitation by recipient, or other major life events. Automatic termination events: in most states, alimony automatically terminates upon the recipient's remarriage and the death of either party. Cohabitation: many states terminate or reduce alimony if the recipient cohabitates with a new partner in a "marriage-like relationship," even without remarriage. Lump-sum alimony generally cannot be modified once agreed. Court orders can make alimony non-modifiable by agreement.

Does fault affect alimony?+

It depends on the state. Fault-divorce states (where fault is recognized): evidence of adultery, abuse, abandonment, or other marital fault may increase or decrease alimony. In some states (like Virginia), adultery can bar alimony entirely for the at-fault spouse. No-fault states: fault is generally not considered in calculating alimony, though some states still allow it as a factor even in no-fault filings. California and many other states are purely no-fault and don't consider misconduct. Always check your specific state's laws — this is an area of significant state-by-state variation.

What is rehabilitative alimony?+

Rehabilitative alimony is the most common type today. It's time-limited support designed to help the lower-earning spouse become financially self-sufficient — by completing education, gaining job skills, re-entering the workforce, or building a career interrupted by the marriage. The recipient must typically present a rehabilitation plan (what steps they'll take and how long it will take). Courts set a specific end date. Example: a spouse who left the workforce to raise children might receive 3-5 years of support while completing a degree and establishing a career. It can be extended if rehabilitation takes longer than anticipated.

Do I have to pay alimony if we were only married a short time?+

Short marriages (generally under 3-5 years) rarely result in alimony unless there are compelling circumstances like a disabled spouse, pregnancy, or extreme income disparity. For marriages under 5 years, courts typically award: no alimony (most common), temporary alimony only (during divorce proceedings), or very short rehabilitative alimony (6-18 months). The key question is whether one spouse made significant sacrifices (left career, relocated) specifically because of the marriage. The shorter the marriage, the harder it is to establish entitlement to support. Prenuptial agreements for short marriages often address this explicitly.

What is the difference between alimony and spousal support?+

The terms are legally interchangeable. Different states use different terminology: Alimony: older term, used in many states including New York, Florida, New Jersey. Spousal support: used in California, Washington, and many other states. Maintenance: used in Illinois, Minnesota, New York (also), Colorado. Spousal maintenance: used in Arizona, Texas. All refer to the same concept: financial payments from the higher-earning spouse to the lower-earning spouse after separation or divorce. The different terms carry no legal distinction in meaning or calculation.

Can a prenuptial agreement affect alimony?+

Yes, significantly. A valid prenuptial (or postnuptial) agreement can: waive alimony entirely for both parties, set a fixed amount or formula for alimony, cap the duration of alimony, establish conditions under which alimony is or isn't paid. Courts generally enforce prenups that clearly address spousal support, as long as: the agreement was entered voluntarily, both parties had independent legal advice (recommended), full financial disclosure was made, the agreement wasn't unconscionable at the time of signing or at enforcement. Some states limit the ability to waive alimony entirely if it would leave a spouse dependent on public assistance.

What happens if alimony is not paid?+

Failure to pay court-ordered alimony (spousal support arrears) can result in: contempt of court proceedings, wage garnishment, seizure of tax refunds, bank account levies, liens on property, suspension of professional licenses, jail time in egregious cases. Unlike child support, there is no federal enforcement agency for alimony — enforcement is entirely through state courts. Unlike child support arrears, alimony arrears CAN be discharged in bankruptcy in some circumstances (though post-2005 alimony obligations from BAPCPA are generally non-dischargeable as "domestic support obligations"). Enforcement effectiveness varies significantly by state and jurisdiction.