California does not use a single formula to set spousal support the way it does for child support. Instead, temporary and long-term support follow two different tracks, and the length of your marriage changes how the second track works. This guide walks through California's actual alimony guidelines in plain language, without predicting what any specific judge would order in your case.
Key Takeaway: Temporary spousal support, paid while a divorce case is open, often follows a guideline formula. Long-term spousal support, ordered once the divorce is final, has no formula at all. It is decided using the Family Code Section 4320 factors, and the marriage's length mainly affects how long the court keeps authority to revisit the order, not whether support is automatic or how much it will be.
What Are California's Alimony Guidelines?
"Alimony" is the common term for what California law calls spousal support or, for registered domestic partners, partner support. California's alimony guidelines split into two separate systems depending on when in the case support is being paid.
Temporary spousal support is a court-ordered monthly payment made while a divorce, legal separation, or domestic violence restraining order case is still open. Long-term spousal support is ordered once the divorce or legal separation is final. Many marriages and domestic partnerships end without either spouse paying long-term support at all. It is more common when the marriage was long, or when one spouse earns significantly more than the other.
How Long Does Spousal Support Last in California?
Support lasts for a reasonable amount of time, meaning the time it would generally take for the supported spouse to become self-supporting. The judge starts with two different assumptions depending on the marriage's length:
- For marriages under 10 years, support often lasts around half the length of the marriage, as an informal starting point.
- For marriages of 10 years or more, there is no assumption about what counts as a reasonable duration. Support in these long-term marriages can continue for as long as one spouse needs it and the other can pay.
Neither of these is a fixed rule. A judge can order something different in either situation, based on the Family Code 4320 factors described below. Support can also end early: if you agree in writing and the court signs off, if the court orders it to end, if the supported spouse remarries, or if either spouse dies.
What Happens to Alimony After a 10-Year (Long-Term) Marriage?
Under Family Code Section 4336, a marriage of 10 years or more, measured from the date of marriage to the date of separation, creates a presumption that it is a "marriage of long duration." What that mainly does is let the court keep jurisdiction indefinitely to modify or end spousal support later, unless the spouses agreed in writing otherwise. It is a rule about the court's ongoing authority, not a guarantee of any particular amount or duration. Courts can also find a marriage under 10 years to be one of long duration based on the specific facts, and a marriage over 10 years does not automatically mean lifetime support. Our detailed guide on the spousal support 10-year rule breaks this distinction down further.
Permanent vs. Temporary Spousal Support
Temporary support and long-term (sometimes called "permanent," though that word is misleading) support are calculated in very different ways.
- Temporary support is based on need and ability to pay. Many California courts use a common guideline formula as a starting point: roughly 40% of the higher earner's net monthly income minus 50% of the lower earner's net monthly income. The judge can adjust the result based on your situation, such as who is paying for a child's college costs or carrying high medical bills.
- Long-term support has no formula. The judge looks at the Family Code 4320 factors, described below, and makes a decision based on the full picture of your marriage and finances.
Is There Such a Thing as Lifetime Alimony in California?
Not automatically, even after a long marriage. What people call "alimony for life" is really the fact that a court keeps jurisdiction to revisit support in a marriage of long duration, rather than assuming a set end date the way it might informally for a shorter marriage. That is different from a guarantee that payments never stop.
Under Family Code Section 4337, unless the spouses agreed otherwise in writing, the support obligation ends when either spouse dies or when the supported spouse remarries. A court can also decline to award support in the first place, or later reduce or terminate it, if the Family Code 4320 factors and any change in circumstances support that outcome.
How Much Is Average Alimony in California?
There is no single "average" figure, because temporary and long-term support are calculated so differently.
For temporary support, many courts and family law facilitators use a computer program to run the guideline formula against each spouse's net income (a well-known example in the family law field is commonly called DissoMaster in practice). Your court's family law facilitator or self-help center may be able to run this calculation for you. Virdix's spousal support estimator also models this temporary guideline formula for planning purposes.
For long-term support, there is no formula and therefore no meaningful statewide average. A judge weighs the Family Code 4320 factors against your specific facts, so two marriages with similar incomes can end up with very different orders.
Prenups and Spousal Support: Can You Waive Alimony in Advance?
Under Family Code Section 1612, spouses can address spousal support in a premarital agreement, including waiving it. There are limits. A spousal support provision, including a waiver, is not enforceable against a party who was not represented by independent counsel when they signed the agreement, and it is not enforceable if it was unconscionable at the time someone tries to enforce it. Being represented by counsel at signing does not, by itself, rescue a provision that is otherwise unenforceable.
A legal separation involves the same spousal support rules as a divorce; a premarital agreement addressing alimony applies whether the case ends in legal separation or dissolution.
How Do I End or Modify Alimony in California?
If your financial situation changes significantly after a long-term support order, either spouse can ask the court to change it. Common triggers include a job loss, a significant raise, or retirement. The general steps:
- If you and your former spouse agree, write up the agreement and submit it for a judge to sign.
- If you cannot agree, file a Request for Order (Form FL-300), explaining what you want changed and why, referencing the Family Code 4320 factors again as applied to your new circumstances.
- Complete an updated Income and Expense Declaration (Form FL-150) with proof of your current income.
Ask the court to change support as soon as your situation changes. A judge can generally only change the amount as far back as the date you filed your request, not before.
What Is a Vocational Evaluation in a California Spousal Support Case?
Under Family Code Section 4331, a court can order either spouse to undergo an examination by a vocational training counselor. The evaluation assesses the spouse's ability to get a job that would support the marital standard of living, based on their age, health, education, marketable skills, and the current job market. The order requires a motion and a showing of good cause, and the court can require the paying spouse to cover the cost of the evaluation and any recommended retraining or education, on top of spousal support itself.
Frequently Asked Questions
How long do you pay alimony in California?
It depends on the length of the marriage and the facts of your case. For a marriage under 10 years, courts often start from an informal guideline of support lasting about half the length of the marriage. For a marriage of 10 years or more, there is no assumption about a fixed end date, and the court keeps jurisdiction to revisit support later. Neither rule guarantees a specific number of years. The Family Code 4320 factors control the actual outcome.
Is there such a thing as alimony for life in California?
Not automatically. California has no statute that guarantees lifetime spousal support, even after a long marriage. What changes at 10 years is that the court keeps ongoing jurisdiction over support rather than assuming a set end date. A judge can still decline to award support, or order it to end, based on the Family Code 4320 factors and any later change in circumstances. Support also generally ends on the death of either spouse or the remarriage of the supported spouse, under Family Code Section 4337, unless the parties agreed otherwise in writing.
What happens to spousal support after retirement in California?
Retirement can be grounds to ask the court to change a long-term support order, since it usually changes the paying spouse's income. It is not automatic. The spouse who wants the change has to file a Request for Order (Form FL-300) and show the court that circumstances changed enough to justify a new amount. The court then applies the same Family Code 4320 factors again to the updated facts, including each spouse's age and health.
Can a prenup waive alimony in California?
Generally yes, under Family Code Section 1612, spouses can address spousal support in a premarital agreement, including waiving it. A spousal support provision is not enforceable if the person the waiver is being used against was not represented by independent counsel when they signed it, or if the provision is unconscionable at the time someone tries to enforce it. Having a lawyer involved at signing does not automatically make an otherwise unenforceable provision enforceable.
What is a vocational evaluation in a California spousal support case?
A vocational evaluation is an examination by a qualified vocational training counselor that assesses a spouse's ability to get a job based on age, health, education, marketable skills, and the current job market, under Family Code Section 4331. A judge can order one on a motion for good cause. The paying spouse can be ordered to cover the cost of the evaluation and any related retraining or education, in addition to spousal support.
How much is average alimony in California, and is there a formula?
Temporary spousal support, paid while a case is open, is often calculated with a guideline formula many California courts use as a starting point: roughly 40% of the higher earner's net monthly income minus 50% of the lower earner's net monthly income. Courts can vary from it based on your situation. Long-term spousal support after the divorce is final has no comparable formula. It is based on the Family Code 4320 factors applied to your specific facts, which means there is no single "average" figure that applies to every case.
Have California's alimony laws changed recently?
The core framework, the temporary support guideline formula and the Family Code 4320 factors for long-term support, has not changed in recent years. If you have seen references online to California alimony law changes in a specific year, confirm the current text of Family Code Sections 4320, 4331, and 4336 through the California Legislative Information website, or ask your court's self-help center, before relying on anything that sounds like a new rule.
How Virdix Helps
Spousal support cases depend on the same financial disclosures as the rest of your divorce, including Form FL-150. Virdix helps you prepare that paperwork and every other form in your California case, keeping your numbers consistent across documents. Virdix does not calculate long-term spousal support amounts or predict how a judge will apply the Family Code 4320 factors in your case. Visit the spousal support hub or the spousal support estimator for more, or consult a licensed attorney for advice about your specific situation.
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This article is for informational purposes only and does not constitute legal advice. Virdix is a document preparation service, not a law firm, and does not provide legal advice. Spousal support outcomes depend on individualized facts a judge weighs under Family Code Section 4320, and no amount or duration should be assumed from this guide. For advice about your specific situation, consult a licensed California family law attorney.
Sources: California Courts Self-Help Center (selfhelp.courts.ca.gov), California Family Code Sections 1612, 4320, 4331, 4336, and 4337 (leginfo.legislature.ca.gov), Judicial Council of California.