The 10-Year Line: Short vs. Long-Term Marriages
California law draws a critical distinction at the 10-year mark. This threshold — measured from the date of marriage to the date of separation — determines whether the court sets a specific end date for alimony or retains jurisdiction indefinitely.
Marriages Under 10 Years
For marriages shorter than 10 years, California courts generally follow the “half the length of the marriage” guideline for spousal support duration. A marriage that lasted 8 years typically results in approximately 4 years of support. A 4-year marriage typically results in about 2 years.
This is a guideline, not a rule. The court has discretion to order support for a longer or shorter period based on the FC §4320 factors. But in practice, the “half the marriage” benchmark is the starting point for most Riverside County judges.
At the end of the support period, alimony terminates and the court loses jurisdiction — meaning neither party can go back to court to request an extension (with very limited exceptions). This is why the duration set in the initial order is so important.
Marriages of 10 Years or More
When a marriage lasts 10 years or more, it is classified as a “marriage of long duration” under FC §4336(b). For these marriages, the court retains jurisdiction over spousal support indefinitely. This does not mean alimony lasts forever — it means the court does not set a specific termination date and either party can return to court to request modification at any time.
The 10-year threshold is measured precisely. The duration is calculated from the date of marriage to the date of separation — not the date of filing, not the date of judgment. Under FC §70, the “date of separation” is the date one spouse communicated a complete and final break to the other and their conduct was consistent with that intent. If your marriage lasted 9 years and 11 months, you are in the “short-term” category. If it lasted 10 years and 1 day, you are in the “long-term” category. This distinction can be worth hundreds of thousands of dollars over a lifetime. FC §4336(b) FC §70
The 14 Factors: How Courts Decide Duration
Whether the marriage is short or long, the court evaluates the same 14 factors under FC §4320 to determine the appropriate amount and duration of spousal support. No formula exists for long-term support — judges weigh these factors based on the specific facts of each case.
The FC §4320 Factors
- Earning capacity of each spouse — including the extent to which the supported spouse’s earning capacity was impaired by periods of unemployment during the marriage devoted to domestic duties FC §4320(a)
- The extent to which the supported spouse contributed to the other’s education, training, or career FC §4320(b)
- The paying spouse’s ability to pay — considering earning capacity, earned and unearned income, assets, and standard of living FC §4320(c)
- Each spouse’s needs based on the marital standard of living FC §4320(d)
- Each spouse’s assets and obligations — including separate property FC §4320(e)
- Duration of the marriage FC §4320(f)
- The supported spouse’s ability to work without interfering with the interests of dependent children in their care FC §4320(g)
- Age and health of both parties FC §4320(h)
- Documented history of domestic violence FC §4320(i)
- Tax consequences to each party FC §4320(j)
- The balance of hardships to each party FC §4320(k)
- The goal of self-support within a reasonable period FC §4320(l)
- Criminal conviction of an abusive spouse FC §4320(m)
- Any other factors the court determines are just and equitable FC §4320(n)
Factor 12 is the most misunderstood. FC §4320(l) states that the goal is for the supported spouse to be self-supporting within a “reasonable period of time,” which is generally defined as half the length of the marriage for short-term marriages. But for long-term marriages, what constitutes a “reasonable period” is far less defined — and it depends heavily on the supported spouse’s age, health, work history, and marketable skills. A 55-year-old who has been out of the workforce for 25 years has a very different path to self-sufficiency than a 35-year-old with a college degree. For a comprehensive breakdown of all 14 factors, see our spousal support FAQ.
Temporary vs. Long-Term Alimony
California recognizes two distinct types of spousal support, and they are calculated completely differently.
Temporary Support (Pendente Lite)
Temporary spousal support is ordered during the divorce proceedings to maintain the status quo while the case is pending. It is calculated using a county guideline formula — typically 40% of the higher earner’s net income minus 50% of the lower earner’s net income. This formula is mechanical and does not consider the FC §4320 factors.
Temporary support lasts until the divorce is finalized and a long-term order is entered. It can be modified during the proceedings if circumstances change — for example, if the paying spouse loses their job or the supported spouse begins earning income.
Long-Term (Post-Judgment) Support
Long-term support is the order that takes effect after the divorce is finalized. Unlike temporary support, there is no formula. The court evaluates all 14 FC §4320 factors and exercises its discretion to determine both the amount and duration. This is where the “half the marriage” guideline and the 10-year threshold come into play.
Temporary support amounts often differ significantly from long-term support. Many clients expect that the temporary support amount will carry over into the final order. It usually does not. Temporary support uses a formula; long-term support uses judicial discretion. The long-term amount may be higher or lower depending on the FC §4320 analysis. Do not plan your post-divorce finances based on the temporary support number.
The Gavron Warning: Get a Job or Lose Support
The Gavron warning is one of the most important and least understood concepts in California alimony law. Named after the case In re Marriage of Gavron (1988) 203 Cal.App.3d 705, it is a formal court admonition to the supported spouse.
The warning states that the supported spouse is expected to make reasonable good-faith efforts to become self-supporting within a reasonable period of time. If the supported spouse fails to make these efforts, the paying spouse can return to court and request a reduction or termination of support based on the supported spouse’s failure to comply with the Gavron warning.
What “Reasonable Efforts” Means
The court evaluates what is reasonable based on the supported spouse’s specific circumstances:
- A 30-year-old with a college degree is expected to seek employment relatively quickly
- A 50-year-old who has been out of the workforce for 20 years may need time for education or retraining before employment is realistic
- A spouse with health limitations may not be expected to work at all, or may be limited to part-time work
- A parent with young children may not be expected to work full-time while children are in their care
A vocational evaluation under FC §4331 can be ordered to assess the supported spouse’s employability — their education, skills, work history, and the job market for their qualifications. This evaluation is powerful evidence in duration disputes.
If you are the supported spouse: take the Gavron warning seriously. Enroll in education or training, update your resume, seek employment — and document every effort. If the paying spouse later seeks to reduce support, your documented efforts to become self-supporting are your best defense. If you are the paying spouse: request a Gavron warning in the initial order. It creates the legal foundation for a future modification motion if the supported spouse does not make efforts toward self-sufficiency.
When Alimony Ends
California law specifies several events that terminate spousal support automatically or provide grounds for termination through a court order.
Automatic Termination
- Death of either party — under FC §4337, support terminates upon the death of the paying or receiving spouse (unless the parties agreed otherwise in a marital settlement agreement)
- Remarriage of the supported spouse — under FC §4337, spousal support terminates when the supported spouse remarries. This is automatic and requires no court motion. For details on how remarriage affects support, see our guide on remarrying after divorce in California
- Court-ordered end date — for short-term marriages, the court typically sets a specific end date in the support order. When that date arrives, support terminates
Grounds for Modification or Termination
- Material change of circumstances — under FC §4336, either party can request modification if circumstances have changed materially since the original order
- Cohabitation with a new partner — under FC §4323, if the supported spouse is cohabiting with a new romantic partner, there is a rebuttable presumption that the supported spouse’s need for support has decreased. Our guide on cohabitation and alimony covers this in detail
- Retirement of the paying spouse — a legitimate retirement at normal retirement age can be a material change of circumstances justifying a reduction
- Supported spouse’s increased earning capacity — if the supported spouse obtains employment, completes education, or otherwise increases their income
- Failure to comply with a Gavron warning — if the supported spouse has not made reasonable efforts to become self-supporting
Cohabitation does not automatically end support. Under FC §4323, the presumption is that the supported spouse’s need has decreased — not that support should end entirely. The supported spouse can rebut the presumption by showing that the cohabitation has not reduced their financial need. However, in practice, cohabitation is often the single most effective basis for reducing or terminating long-term alimony. FC §4323
Alimony and Taxes in California
The tax treatment of alimony changed dramatically with the Tax Cuts and Jobs Act (TCJA) in 2018. Understanding the current rules is essential for both the paying and receiving spouse.
For Divorces After December 31, 2018
For any divorce or separation agreement executed after December 31, 2018:
- The paying spouse cannot deduct alimony on their federal tax return
- The receiving spouse does not report alimony as income on their federal tax return
- California conforms to this federal treatment for state tax purposes
This is a significant change from the pre-2019 rules, where alimony was deductible by the payer and taxable to the recipient. The practical impact: the paying spouse’s after-tax cost of alimony is now higher, and the receiving spouse keeps the full amount without a tax burden. This affects how courts calculate support amounts — judges should account for the fact that the paying spouse receives no tax benefit.
For Pre-2019 Agreements
If your divorce was finalized before January 1, 2019 and the agreement has not been modified to adopt the new rules, the old tax treatment may still apply: deductible by the payer, taxable to the recipient. However, if the agreement is modified after 2018, the new rules apply unless the modification expressly states otherwise.
How to Modify Alimony Duration
If your circumstances have changed since the original alimony order, you can request a modification by filing a Request for Order (RFL-300) with the court. The process is the same whether you are seeking to increase, decrease, or terminate support. Our guide on modifying custody and support orders covers the procedural steps.
What Qualifies as a “Material Change”
- Job loss or significant income reduction by the paying spouse
- Increased income by the supported spouse
- Retirement of the paying spouse at normal retirement age
- Cohabitation of the supported spouse with a new partner
- Health changes that affect either party’s ability to work or need for support
- Completion of education or training by the supported spouse
- Failure to comply with a Gavron warning
The burden of proof is on the party requesting the modification. You must demonstrate that the change is material — meaning significant enough to warrant a different support order — and that the current order no longer reflects the parties’ circumstances.
Duration by Scenario: What to Expect
While every case is different, here are realistic duration expectations based on our experience in Riverside County:
Marriage of 2–5 Years
Support duration: 1–2.5 years. Typically half the length of the marriage. Both spouses are usually young enough and capable enough to become self-supporting quickly. Courts often set a specific termination date with no possibility of extension.
Marriage of 5–10 Years
Support duration: 2.5–5 years. The “half the marriage” guideline applies, but courts have more discretion as the marriage approaches 10 years. A Gavron warning is common. If the supported spouse has been out of the workforce, the court may allow additional time for retraining.
Marriage of 10–20 Years
Support duration: indefinite jurisdiction, but practically 5–10+ years. The court retains jurisdiction but generally expects the supported spouse to become self-supporting. Duration depends heavily on the supported spouse’s age, health, work history, and the marital standard of living. For gray divorces where the supported spouse is over 50, duration can extend significantly.
Marriage of 20+ Years
Support duration: potentially lifelong. For very long marriages where the supported spouse has been a homemaker for decades, alimony may continue until death, remarriage, or cohabitation. The supported spouse’s path to self-sufficiency may be limited or nonexistent, and courts recognize this reality.
- Under 10 years: roughly half the marriage — the court typically sets a specific end date for alimony at approximately half the length of the marriage
- 10+ years: indefinite jurisdiction — the court retains the power to modify or continue alimony indefinitely under FC §4336(b), but this does not mean lifelong support is guaranteed
- 14 factors determine amount and duration — FC §4320 requires courts to evaluate earning capacity, standard of living, age, health, domestic violence, and 10 other factors
- The Gavron warning is real — courts expect the supported spouse to make reasonable efforts toward self-sufficiency, and failure to do so can result in reduced or terminated support
- Automatic termination triggers — death of either party, remarriage of the supported spouse, or a court-ordered end date terminates alimony (FC §4337)
- Cohabitation creates a presumption — FC §4323 presumes decreased need when the supported spouse cohabits with a new partner, but it does not automatically end support
- Alimony is not taxable post-2018 — under the TCJA, the payer cannot deduct and the recipient does not report alimony as income for divorces after December 31, 2018