California Alimony Calculator
Estimate spousal support and how long it lasts under Cal. Fam. Code § 4320. Enter your numbers below for an instant estimate with a step-by-step breakdown and statute citations.
California Alimony Calculator
This state publishes a guideline equation that takes a share of the payor’s income and subtracts a share of the payee’s.
Based on Cal. Fam. Code § 4320 · Verified June 1, 2026
California has no statutory alimony formula
California has no statutory formula for long-term alimony. This figure applies the common California temporary-support guideline (40% of the payor’s net income minus 50% of the payee’s net income), which courts use for support WHILE a case is pending — not for the final award — so treat it as a ballpark only. The figure below is an estimate to give you a ballpark — a California judge decides the actual amount and duration using the factors listed beneath the calculator. About this method.
Enter income details to see your estimate
Factors California Courts Weigh
- •Marketable skills of the supported party and the job market for those skills
- •Extent to which earning capacity was impaired by periods of unemployment to care for the home
- •Contributions to the other party's education, training, or career
- •Ability of the paying party to pay support
- •Needs of each party based on the marital standard of living
- •Obligations and assets of each party
- •Duration of the marriage
- •Age and health of the parties
- •Documented history of domestic violence
- •Balance of hardships to each party
How California Alimony Works
- •California does not use a formula for long-term spousal support. Judges must weigh the factors in Family Code § 4320 and have wide discretion over the amount.
- •While the divorce is pending, California counties use a temporary-support guideline (commonly 40% of the higher earner's net income minus 50% of the lower earner's); judges are prohibited from using that guideline to set support after judgment.
- •For marriages of less than 10 years, support commonly lasts about half the length of the marriage; this is a guidepost, not a statutory rule.
- •Marriages of 10 years or longer are considered "of long duration," and the court usually keeps the power to award support without a preset termination date.
This is an estimate for educational purposes only, not legal advice. Alimony is highly discretionary; a California judge can order a different amount or duration. Consult a licensed California family-law attorney about your situation. See the official California resource.
How California Calculates Alimony
California addresses spousal support under Cal. Fam. Code § 4320. It uses a guideline equation that takes a percentage of the payor's net income and subtracts a percentage of the payee's net income, with statutory caps. The calculator above applies that equation to your figures and shows each step.
Unlike child support, alimony is one of the most discretionary areas of family law. Even in states with a guideline equation, the figure is a starting point a judge can adjust after weighing the statutory factors, the length of the marriage, and each spouse's needs and ability to pay. Treat any number here as an informed estimate, not a guaranteed award.
Key Rules in California
- California does not use a formula for long-term spousal support. Judges must weigh the factors in Family Code § 4320 and have wide discretion over the amount.
- While the divorce is pending, California counties use a temporary-support guideline (commonly 40% of the higher earner's net income minus 50% of the lower earner's); judges are prohibited from using that guideline to set support after judgment.
- For marriages of less than 10 years, support commonly lasts about half the length of the marriage; this is a guidepost, not a statutory rule.
- Marriages of 10 years or longer are considered "of long duration," and the court usually keeps the power to award support without a preset termination date.
How Long Alimony Lasts in California
For marriages under 10 years, California support often runs about half the length of the marriage (a guidepost, not a rule). Marriages of 10 years or more are "of long duration," and courts generally retain jurisdiction without a fixed end date.
What Counts as Income
California's formula runs on each spouse’s net income — gross pay minus taxes and mandatory deductions. Courts can also impute income to a spouse who is voluntarily unemployed or underemployed, meaning support can be based on what a spouse could earn rather than what they currently do. Use your most recent pay stubs and tax return for the most accurate estimate.
Eligibility & Modifying an Order
Not every divorce results in alimony. California courts award it when one spouse has a genuine financial need and the other has the ability to pay, judged against the factors above.
Alimony orders can usually be modified when there is a substantial change in circumstances — for example, a significant change in either spouse's income, the recipient's remarriage or cohabitation, retirement, or the payor's loss of employment. The specific rules and any non-modifiable agreements depend on your court order and California law.
Frequently Asked Questions
Is this California alimony calculator accurate?
It applies the California guideline from Cal. Fam. Code § 4320 to the numbers you enter, so it gives a close estimate of a typical guideline award. It is not an official court calculation — a judge can order a different amount after weighing the statutory factors.
Is alimony taxable in California?
For divorces finalized after December 31, 2018, alimony is not deductible by the payor and is not taxable income to the recipient under federal law. Most states follow the federal treatment, but check California's current rules for state income tax.
Does cheating affect alimony in California?
It depends on the state. Some states let courts consider marital misconduct among the alimony factors, while others bar it entirely. Review Cal. Fam. Code § 4320 and speak with a California attorney about how fault is treated where you live.
Can alimony be changed later?
Usually yes. Alimony can often be modified when there is a substantial change in circumstances — such as a large change in income, the recipient's remarriage or cohabitation, or the payor's retirement — unless your order or agreement makes it non-modifiable.
Disclaimer
This calculator provides estimates for educational purposes only and is not legal advice. Alimony is highly fact-specific and discretionary; the amount and duration a California court actually orders may differ significantly from any estimate here. For advice about your situation, consult a licensed California family-law attorney.
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