Can alimony be modified after divorce?

Yes. Either spouse can petition for modification upon a substantial change in circumstances such as job loss, major income change, disability, or the recipient's remarriage.

USA Alimony Calculator 2026 - Free Spousal Support Estimator

USA Alimony Calculator 2026

Payor Monthly Gross Income

Higher-earning spouse (before tax)

Recipient Monthly Gross Income

Lower-earning spouse (0 if unemployed)

Length of Marriage (Years)

Enter decimal for partial years (e.g. 7.5)

State / Formula

Select your state for local formula

Recipient Health Status

Marital Standard of Living

Minor Children from This Marriage?

Estimated Spousal Support

National AAML Formula

Monthly Low

Monthly Est.

Monthly High

Estimated Duration

Annual Estimate

Example: Payor earns $8,000/month, Recipient earns $2,000/month, married 10 years. AAML formula: (30% x $8,000) - (20% x $2,000) = $2,000/month estimated. Duration: 4 to 5 years. Use the calculator above for your numbers.

Reviewed by certified family law professionals. Formula based on the American Academy of Matrimonial Lawyers (AAML) guidelines and individual state statutes. Updated April 2026. Source: AAML.org.

What Is Alimony and How Is It Calculated in the USA?

Alimony, also called spousal support or spousal maintenance depending on your state, is a court-ordered payment from one former spouse to the other after a divorce or legal separation. The purpose of alimony is to limit the financial unfairness that can arise when one spouse earns significantly more than the other, or when one spouse sacrificed career advancement to support the household during the marriage.

In the United States, there is no single national formula for calculating alimony. Each of the 50 states has its own laws and guidelines. However, many family law professionals and courts reference the American Academy of Matrimonial Lawyers (AAML) formula as a starting benchmark. This formula calculates alimony as 30% of the payor's gross monthly income minus 20% of the recipient's gross monthly income. The result cannot push the recipient's total income above 40% of both spouses' combined income.

Courts also weigh a wide range of qualitative factors beyond raw income figures. These include the length of the marriage, each spouse's age and health, the marital standard of living, each spouse's earning capacity, and whether the recipient sacrificed education or career opportunities for the marriage. This is why alimony estimates from any calculator should be treated as a planning tool, not a legal guarantee.

States like Illinois, New York, Texas, and California have codified their own spousal support formulas. Our USA alimony calculator includes state-specific formula options so you can get a more localized estimate. For marriages in states without a clear formula, the national AAML model provides the most widely accepted starting point used by family law attorneys across the country.

Who Should Use This Alimony Calculator?

This free USA spousal support calculator is designed for anyone navigating a divorce or legal separation who needs an early estimate of potential alimony obligations or entitlements. It is useful for:

Spouses preparing for divorce negotiations or mediation sessions
Higher-earning spouses estimating their potential monthly payment obligation
Lower-earning or non-working spouses calculating expected support income
Individuals with upcoming attorney consultations who want to walk in informed
Divorced individuals considering a modification of an existing alimony order
Financial planners and mediators working on post-divorce budgets
Self-represented (pro se) litigants exploring their options in family court

This calculator uses the AAML formula and state-specific guidelines as reference points. It does not account for all judicial discretion factors. Always consult a licensed family law attorney in your state for a case-specific analysis.

How to Use the USA Alimony Calculator

Enter the payor's gross monthly income — the higher-earning spouse's income before taxes and deductions.
Enter the recipient's gross monthly income — enter 0 if the recipient is unemployed or a stay-at-home spouse.
Enter the length of the marriage in years. Use decimals for partial years (e.g., 7.5 for seven and a half years).
Select your state to apply a state-specific formula where available (CA, FL, IL, NY, TX). Choose "National AAML Formula" if your state is not listed or for a general estimate.
Choose the recipient's health status and the marital standard of living to apply adjustment factors.
Indicate whether there are minor children from the marriage, as child support obligations can affect alimony capacity.
Click Calculate Alimony to view your estimated monthly low, mid, and high range, annual total, duration, and a full breakdown.

Alimony Formulas by State

While many states leave alimony entirely to judicial discretion, several have adopted statutory guidelines that courts use as a starting point. The table below summarizes the key formula-based states included in our calculator.

State	Formula	Cap	Key Notes
National (AAML)	30% payor gross - 20% recipient gross	40% combined income	Widely used national benchmark
California	40% of income difference (Santa Clara)	None statutory	Judge has broad discretion; this is a local court guideline
Illinois	33.3% payor net - 25% recipient net	40% combined net	Statutory guideline under 750 ILCS 5/504
New York	30% payor - 20% recipient (lower income cap applies)	$228,000 income cap (2025)	Two-formula comparison; lesser amount applies
Texas	20% of payor net income	$5,000/month max	10-year marriage threshold; Texas Family Code §8.055
Florida	AAML-based estimate (no set formula)	Judicial discretion	Florida reformed alimony law in 2023; eliminated permanent alimony

Worked Examples: Alimony Calculation Step by Step

Example 1: 10-Year Marriage (AAML)

Payor income: $8,000/mo

Recipient income: $2,000/mo

Formula: (30% x $8,000) - (20% x $2,000)

= $2,400 - $400 = $2,000/month

Duration: 4 to 5 years

Est. Annual: $24,000

Example 2: Short Marriage (3 Years)

Payor income: $6,000/mo

Recipient income: $0 (unemployed)

Formula: (30% x $6,000) - $0 = $1,800/mo

Duration: 1.2 to 1.5 years (rehabilitative)

Est. Annual: $21,600

Example 3: Illinois 15-Year Marriage

Payor net: $7,000/mo

Recipient net: $1,500/mo

Formula: (33.3% x $7,000) - (25% x $1,500)

= $2,331 - $375 = $1,956/month

Duration: 6 to 7.5 years

Est. Annual: $23,472

Example 4: Long Marriage (25 Years)

Payor income: $12,000/mo

Recipient income: $1,000/mo

Formula: (30% x $12,000) - (20% x $1,000)

= $3,600 - $200 = $3,400/month

Duration: Potentially indefinite

Est. Annual: $40,800

Alimony Duration Quick Reference Table

The AAML guideline uses a multiplier of 0.40 to 0.50 of the marriage length to estimate alimony duration. The table below shows estimates for common marriage lengths.

Marriage Length	Duration Low (x0.40)	Duration High (x0.50)	Likely Type
2 years	0.8 years	1.0 years	Rehabilitative / None
3 years	1.2 years	1.5 years	Rehabilitative
5 years	2 years	2.5 years	Rehabilitative / Durational
7 years	2.8 years	3.5 years	Durational
10 years	4 years	5 years	Durational
12 years	4.8 years	6 years	Durational
15 years	6 years	7.5 years	Durational / Long-term
18 years	7.2 years	9 years	Long-term
20 years	8 years+	Potentially indefinite	Open-durational / Permanent
25 years	Indefinite	Indefinite	Permanent / Lifetime

Key Factors Courts Use to Calculate Alimony

Beyond income and marriage length, judges in every state weigh additional factors when deciding whether to award alimony and in what amount. These factors are why two cases with identical incomes can result in very different awards.

Factor	Impact on Alimony
Income gap between spouses	Larger gap increases likelihood and amount
Marriage length	Longer marriages increase amount and duration
Age of recipient spouse	Older recipients may receive longer or permanent support
Health of either spouse	Poor recipient health can increase award
Marital standard of living	Higher lifestyle = higher benchmark for support
Career sacrifice during marriage	Increases recipient's claim for rehabilitative alimony
Earning capacity and education	Lower earning capacity increases need-based award
Custody of minor children	Custodial parent's ability to work may be limited
Contributions to payor's career	Stay-at-home support for career advancement is weighted
Marital misconduct (some states)	Adultery may reduce or eliminate alimony in fault states
Prenuptial or postnuptial agreement	Can override or limit alimony entirely
Assets and property division	Large property awards may reduce need for monthly support

Types of Alimony in the USA

Not all alimony is the same. Courts can award different types of spousal support depending on the circumstances of the divorce. Understanding these types helps you recognize what a judge may order in your case.

Type	Description	Typical Duration
Temporary / Pendente Lite	Support paid during divorce proceedings before a final order	Until divorce is final
Rehabilitative	Supports recipient while they gain education or reenter workforce	1 to 5 years
Durational	Fixed-term support for marriages that do not qualify for permanent alimony	Portion of marriage length
Permanent / Lifetime	Ongoing support, usually for very long marriages or disabled recipients	Indefinite
Lump-Sum	One-time total payment in lieu of monthly payments	One payment
Reimbursement	Compensates spouse who funded the other's education or business	Fixed period

When Does Alimony End or Get Modified?

Alimony is not necessarily permanent even when initially ordered. Most alimony orders include termination triggers and can be modified by the court when circumstances change significantly.

Common alimony termination events: Recipient remarries, either spouse dies, recipient cohabitates with a new partner (in many states), recipient achieves financial self-sufficiency, or the agreed end date of the alimony term arrives.

To seek a modification of an existing spousal support order, either spouse must demonstrate a substantial change in circumstances. Examples include job loss, significant income increase for the recipient, serious illness, or retirement of the paying spouse. Courts generally require that the change be involuntary and long-lasting, not temporary.

Tax note (post-2018): Under the Tax Cuts and Jobs Act, alimony payments for divorce agreements finalized on or after January 1, 2019 are no longer deductible for the payor and are not taxable income for the recipient. For agreements before this date, the old tax treatment still applies. Always consult a CPA or tax advisor alongside your family law attorney.

Frequently Asked Questions About Alimony in the USA

How is alimony calculated in the USA?

There is no single national formula. Many attorneys and courts reference the AAML guideline: 30% of the payor's gross monthly income minus 20% of the recipient's gross monthly income, with a 40% combined income cap. States like Illinois, New York, Texas, and California have their own statutory formulas. The final amount also depends on factors like marriage length, health, standard of living, and earning capacity.

How long do you have to be married to get alimony?

Most states have no strict minimum, but courts are unlikely to award alimony for very short marriages (under 2 to 3 years) unless exceptional circumstances exist. Texas generally requires a minimum 10-year marriage for maintenance. For marriages under 5 years, courts typically limit support to a brief rehabilitative period. For marriages of 10 or more years, durational or long-term alimony becomes more likely.

How much alimony will I have to pay?

Using the AAML formula, the estimated monthly payment is 30% of your gross monthly income minus 20% of your spouse's gross monthly income. For example, if you earn $8,000/month and your spouse earns $2,000/month, the estimate is ($2,400 - $400) = $2,000/month. This is an estimate. Your actual payment depends on your state's laws and the judge's discretion.

Can a husband get alimony from his wife?

Yes. Alimony is gender-neutral in all 50 states. Any spouse who earns significantly less than the other, or who sacrificed career opportunities during the marriage, may be eligible to receive alimony regardless of gender. Courts look at financial need and the ability to pay, not the gender of either spouse.

Does cheating affect alimony in the USA?

It depends on the state. Some states are "fault" divorce states where marital misconduct like adultery can reduce or eliminate the cheating spouse's right to receive alimony. Other states are "no-fault" states where misconduct is irrelevant to the alimony determination. States like North Carolina and Georgia still consider fault in alimony cases, while California and New York do not.

Is alimony taxable income in 2026?

For divorce agreements finalized after December 31, 2018, alimony is not taxable income for the recipient and not deductible for the payor under the Tax Cuts and Jobs Act. For agreements finalized before January 1, 2019, the old rules apply: the payor deducts it and the recipient pays income tax on it. If you modified a pre-2019 agreement, consult a CPA to determine which tax rules apply.

What is the difference between alimony and spousal support?

Alimony, spousal support, and spousal maintenance all describe the same legal obligation: one ex-spouse paying the other after divorce. The term used depends on your state. "Alimony" is common in eastern and southern states. "Spousal support" is preferred in California and western states. "Spousal maintenance" is used in Texas, New York, Illinois, and others. Our calculator treats all three identically.

Can alimony be modified after the divorce is final?

Yes, in most states. Either spouse can petition the court for a modification if there has been a substantial and lasting change in circumstances. This includes major income changes, job loss, disability, retirement, or the recipient's cohabitation with a new partner. Modifications are not automatic; you must file a formal request with the family court that issued the original order.

What happens if I stop paying alimony?

Failing to pay court-ordered alimony can result in serious legal consequences including contempt of court, wage garnishment, seizure of tax refunds, suspension of your driver's license or professional license, and in extreme cases, jail time. If you are unable to pay, the correct approach is to petition the court for a modification rather than simply stopping payments.

Does alimony stop when the recipient remarries?

In virtually all states, alimony automatically terminates when the recipient spouse remarries. Many states also allow termination or reduction when the recipient cohabitates with a romantic partner in a marriage-like arrangement, though this varies by state and the specific language of the divorce agreement. Death of either party also typically ends the alimony obligation.

Is alimony different from child support?

Yes. Alimony is paid from one ex-spouse to the other for the financial support of that spouse. Child support is paid to ensure the financial needs of the children are met and is calculated using separate state-specific guidelines based on each parent's income and parenting time. Both obligations can exist simultaneously in the same divorce, and child support obligations can affect the amount of alimony a court awards.

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Calculation methodology sourced from official government publications. See our Editorial Policy for how we build and maintain our calculators.

Disclaimer: This alimony calculator is provided for general educational and informational purposes only. Results are estimates based on the AAML formula and selected state guidelines and do not constitute legal advice. Actual alimony awards are determined by a judge based on the full circumstances of your case, applicable state law, and judicial discretion. Always consult a licensed family law attorney in your state before making any legal decisions. My Easy Calculator is not a law firm and no attorney-client relationship is created by using this tool.