In California, alimony — also called spousal support or spousal maintenance — is determined at the court's discretion after weighing the length of the marriage, each spouse's income and earning capacity, and the standard of living established during the marriage; there is no single mandatory formula. Our calculator applies common advisory benchmarks to provide a planning estimate for California spousal support.
California alimony is awarded following a divorce or legal separation when one spouse has significantly lower income or earning capacity than the other. Unlike child support, which is calculated under a mandatory statutory formula (Fam. Code §4055), alimony in California is not determined by a single mandatory formula. Instead, California courts weigh a range of statutory factors to determine whether alimony is appropriate and, if so, the amount and duration most equitable given the facts of the case.
Because alimony decisions in California are highly fact-specific and subject to judicial discretion, the estimates provided here should be treated as a starting point for planning and negotiation, not as a prediction of what a court will actually order. Actual awards can differ substantially based on your judge, the specific facts of your case, and any negotiated agreements reached in mediation. Always consult a licensed family law attorney in California before making financial decisions based on any alimony estimate.
California has no formula for long-term (post-judgment) spousal support — judges weigh the Family Code § 4320 factors. Temporary support while the case is pending is commonly computed with local guideline formulas (e.g., the Santa Clara guideline: roughly 40% of the higher earner's net income minus 50% of the lower earner's net income).
| Category | Details |
|---|---|
| Formula / Method | Temporary only (local guideline): ≈ (40% × payor net) − (50% × payee net). Long-term: § 4320 factors, no formula. |
| Duration | Marriages under 10 years: working presumption of support for about half the marriage length. Marriages of 10+ years are 'long duration' — the court retains jurisdiction indefinitely. |
| Fault | California is pure no-fault. Documented domestic violence can reduce or bar support to an abusive spouse. |
| Modification | Modifiable on changed circumstances unless made non-modifiable by agreement; ends at remarriage or death. |
| Tax Note | Unique to California: alimony is NOT deductible federally for post-2018 divorces, but IS still deductible by the payer (and taxable to the recipient) on California state returns. |
| Factor | Typical Impact on Award |
|---|---|
| Length of marriage | High — marriages under 10 years rarely result in permanent alimony |
| Income and earning capacity disparity | High — primary driver of amount; larger gap = larger award |
| Standard of living during marriage | High — courts try to preserve it for the lower-earning spouse |
| Non-economic contributions (homemaking) | Moderate — compensates career sacrifices during marriage |
| Age and health of each spouse | Moderate — poor health or older age limits ability to become self-supporting |
| Marital misconduct / fault | Varies — California law determines whether fault is a permissible factor |
| Time to become self-supporting | Moderate — affects duration; education or training shortens it |