In California, the 10-year rule and spousal support work like this: if your marriage lasted at least ten years measured from the wedding to the date of separation, the court presumes it is a “long-duration” marriage under Family Code Section 4336 and keeps jurisdiction over spousal support indefinitely instead of setting a fixed end date.1California Legislative Information. California Family Code 4336 Indefinite jurisdiction is not the same thing as permanent payments, and the ten-year mark itself is a presumption a judge can move in either direction.
How the Ten Years Are Counted
The clock starts on the wedding date and stops on the date of separation, not the date divorce papers are filed and not the date the judgment is entered. Because divorces routinely take months or years to finish, the separation date is almost always earlier than the final judgment. Under Family Code Section 70, the date of separation is the day a “complete and final break in the marital relationship” occurred: one spouse clearly communicated the intent to end the marriage and then acted consistently with that intent.2California Legislative Information. California Family Code 70 Feeling unhappy or sleeping in different rooms is not enough. There has to be an unambiguous statement and matching conduct.
A judge can also subtract periods when the spouses separated during the marriage. If a couple lived apart for two years in the middle of a twelve-year marriage, the court could conclude the marriage was effectively ten years for these purposes, right at the threshold.
Because the measurement runs to separation rather than filing, timing near the ten-year line gets contested hard. A spouse who wants long-duration status has every reason to push the separation date later; the other spouse has every reason to pull it back. Evidence tends to come from lease agreements, bank account changes, text messages, and testimony from friends or family about when the break actually happened. Filing for divorce at year eight and finishing at year eleven does not get you credit for those extra years. The marriage ended, for legal purposes, when the couple separated.
What “Long-Duration” Actually Means Under Section 4336
Section 4336(b) creates a rebuttable presumption. Ten years or more triggers it, but either spouse can argue the marriage should not be treated as long duration, and a court can also find a shorter marriage qualifies based on the facts.1California Legislative Information. California Family Code 4336 Nine years and eight months is not automatically short, and eleven years is not automatically long. The threshold shifts where the burden lies, not the outcome.
The concrete legal effect is jurisdictional. For marriages under ten years, judges typically set a support end date, with the general guideline being roughly half the length of the marriage. For a long-duration marriage there is no presumed end date, and the court keeps the power to order, modify, or terminate support as long as it is needed.1California Legislative Information. California Family Code 4336
Indefinite Jurisdiction Is Not a Lifetime Check
This is the point people misunderstand most often. Indefinite jurisdiction means the court retains authority. It does not mean the court will order support forever, or in any particular amount. A judge can award zero support to the lower-earning spouse even in a twenty-year marriage if the facts justify it. In In re Marriage of Morrison, the California Supreme Court cautioned against terminating jurisdiction prematurely when the record does not show the supported spouse can meet future needs, but the amount stays fully within the court’s discretion.3LawPipe. In re Marriage of Morrison
In practice, support in long-duration marriages often lasts for years and is revisited when circumstances change. Either spouse can ask the court to increase, decrease, or end support based on shifts in income, employment, health, or living arrangements, and the court reapplies the same statutory factors it used the first time.4Judicial Branch of California. Ask to Change Your Long-Term Spousal Support Order Section 4336(c) expressly preserves the court’s power to terminate support entirely.1California Legislative Information. California Family Code 4336
What Drives the Actual Amount
Family Code Section 4320 lists the factors a judge must weigh when deciding the amount and duration of support. There is no formula for long-term support; the statute gives the court broad discretion. Among the main considerations:5California Legislative Information. California Family Code 4320
- Each spouse’s earning capacity, including job skills, the current job market, and any retraining or education needed to reach the marital standard of living.
- Whether the supported spouse’s earning ability suffered because they left the workforce to handle childcare or the household, or helped the other spouse build a career or complete a degree.
- The paying spouse’s income, assets, and own standard of living.
- Age and health of both spouses. Older or disabled spouses who cannot realistically return to work get more weight here.
- Documented domestic violence between the spouses, including emotional distress and protective orders.
- The length of the marriage.
Judges weigh these together. A healthy 45-year-old with a graduate degree who stayed home for twelve years does not get the same result as a 62-year-old with chronic health problems who never worked outside the home, even if both marriages lasted the same number of years.
The Gavron Expectation
Courts often issue what is called a Gavron Warning to the spouse receiving support, named after the 1988 Court of Appeal case Marriage of Gavron. Family Code Section 4330(b) lets the judge formally advise the supported spouse to make reasonable efforts to become self-supporting.6California Legislative Information. California Family Code 4330 It puts the recipient on notice that support is not designed to last forever, and it strengthens the paying spouse’s later argument for a reduction if no genuine effort has been made.
What counts as reasonable depends on the person. Courts look at whether the supported spouse pursued employment, enrolled in training, updated credentials, or actively searched for work. Age, health, and caregiving responsibilities all factor in. In long-duration marriages, the court has discretion to skip the warning entirely if it decides the warning would be inappropriate under the circumstances.6California Legislative Information. California Family Code 4330
When Support Ends Anyway
Even with indefinite jurisdiction, spousal support terminates automatically in two situations: the death of either spouse, or the remarriage of the supported spouse.7California Legislative Information. California Family Code 4337 The parties can agree in writing to different terms, but absent that written agreement, remarriage and death are hard cutoffs.
Short of those events, the paying spouse can file a motion asking the court to reduce or end support based on a material change in circumstances. Common grounds include the supported spouse’s cohabitation with a new partner, a substantial increase in the supported spouse’s income, or the paying spouse’s retirement or job loss. The court reapplies the Section 4320 factors on any modification request.4Judicial Branch of California. Ask to Change Your Long-Term Spousal Support Order
What the 10-Year Rule Does Not Do
The 10-year rule changes the court’s authority over ongoing support. It does not change how property is divided. Family Code Section 2550 requires equal division of the community estate whether a marriage lasted two years or twenty, and hitting ten years does not entitle one spouse to a larger share of the house, retirement accounts, or business interests.8California Legislative Information. California Family Code 2550
Separately, federal law uses its own ten-year marriage threshold for Social Security divorced-spouse benefits, which is a different rule with different requirements (age 62, unmarried, and an ex-spouse who qualifies for retirement or disability benefits, among others).9Social Security Administration. Code of Federal Regulations 404.331 Meeting California’s long-duration presumption does not automatically mean you qualify for Social Security on your ex’s record, and vice versa. They share a number, not a legal standard.