Unlike child support, California has no fixed formula for long-term spousal support — no plug-in-the-numbers calculator, no statewide table. Instead, judges weigh a specific list of factors written into law, and the outcome depends heavily on the length of the marriage and the specifics of both spouses’ situations.

Here’s how that actually works, what changes once a marriage crosses the 10-year mark, and a real 2026 tax law change that affects the math for anyone finalizing support this year.

Quick Answer: How California Handles Spousal Support

  • There are two kinds: temporary support (during the case, often calculated with county guideline software) and long-term support (decided after judgment, based on judicial discretion)
  • Long-term support is guided by 14 factors under Family Code § 4320 — there’s no formula here, unlike child support
  • For marriages under 10 years, support generally lasts around half the length of the marriage (a guideline, not a hard rule)
  • For marriages of 10+ years, courts retain indefinite jurisdiction under Family Code § 4336 — there’s no automatic end date
  • Senate Bill 711, effective for agreements executed on or after January 1, 2026, ended California’s long-standing divergence from federal tax treatment — spousal support is now neither deductible by the payer nor taxable to the recipient on California state returns either, matching federal rules that have applied since 2019

Two Very Different Kinds of Support

Temporary spousal support is paid while the divorce case is still pending, meant to maintain financial stability during the process. Courts often rely on county-specific guideline software (such as DissoMaster or the Santa Clara formula) to calculate it — but unlike child support, this is a county-level practice, not a single statewide formula written into law.

Long-term (sometimes called “permanent”) spousal support is decided after judgment, and this is where the 14 statutory factors below actually apply. There’s no calculator for this stage — it’s judicial discretion, guided by law. Support obligations also interact with the rest of your case: income used to calculate support ties back to the same financial disclosures covered in community property division, and when both spousal and child support apply in the same case, the child support guideline formula explicitly adjusts based on spousal support paid or received.

The 14 Factors Under Family Code § 4320

When setting long-term support, courts must consider all of the following:

  • (a) Each party’s earning capacity relative to the marital standard of living — including marketable skills, the job market for those skills, and any time out of the workforce for domestic duties
  • (b) Whether the supported party contributed to the other’s education, training, career, or license
  • (c) The supporting party’s actual ability to pay
  • (d) The needs of each party based on the marital standard of living
  • (e) The obligations and assets — including separate property — of each party
  • (f) The duration of the marriage
  • (g) The supported party’s ability to work without unduly interfering with the interests of children in their custody
  • (h) The age and health of both parties
  • (i) Any documented history of domestic violence between the parties
  • (j) The immediate and specific tax consequences to each party
  • (k) The balance of hardships to each party
  • (l) The goal that the supported party become self-supporting within a reasonable time
  • (m) Any criminal conviction of an abusive spouse, which can reduce or eliminate a support award
  • (n) Any other factors the court finds just and equitable

No single factor controls the outcome — courts weigh all of them together against the specific facts of the case.

The Half-the-Marriage Guideline

For marriages under 10 years, factor (l) above sets a general benchmark: the “reasonable period of time” for the supported spouse to become self-supporting is generally half the length of the marriage. A 6-year marriage might see roughly 3 years of support. This is a guideline the court starts from, not a hard cap — the other 13 factors can still push duration longer or shorter.

Marriages of 10 Years or More

Once a marriage reaches the 10-year mark (measured from the date of marriage to the date of separation), Family Code § 4336 applies: the court retains indefinite jurisdiction over spousal support. There’s no automatic termination date, and no equivalent of the half-the-marriage guideline. This doesn’t mean support is guaranteed to continue forever — it means the door to modify or eventually end it stays open, rather than closing on a fixed schedule.

The Self-Support Expectation

Even in long marriages, courts commonly issue what’s known as a Gavron warning — a formal notice, codified in Family Code § 4330(b), that the supported spouse should make reasonable efforts toward self-support, taking the § 4320 factors into account. The court can decide this warning is inadvisable in a long-duration marriage under § 4336. This ties directly to factor (l) above and reflects the underlying goal of the law: support that transitions someone through a period of need, not necessarily a permanent arrangement.

What Senate Bill 711 Changed for 2026

This is a real, recent development worth understanding clearly, since it’s easy to find outdated or incomplete explanations online. Some background: since 2019, federal tax law (following the 2017 Tax Cuts and Jobs Act) has treated spousal support as not deductible by the payer and not taxable to the recipient. California, however, had not conformed its own state tax law to that federal change — for years, California continued taxing spousal support the old way on state returns even though federal treatment had already changed.

Senate Bill 711 (Chapter 231, Statutes of 2025), signed October 1, 2025, ended that divergence. Per the bill’s own text: for any divorce or separation instrument executed on or after January 1, 2026, California now follows the same federal treatment — spousal support is not deductible by the payer and not taxable to the recipient on California state returns either. For instruments executed on or before December 31, 2025, the prior California treatment continues to apply, unless a later modification expressly adopts the new rule.

Why this matters practically: if you’re negotiating a spousal support agreement, the timing of when it’s finalized affects the tax math for both sides. This is exactly the kind of detail worth discussing with a tax professional or attorney rather than assuming either the old or new rule automatically applies — and it’s one more factor that can affect the overall cost of your divorce, alongside the disputes over property and custody covered elsewhere on this site.

Not sure how spousal support fits into the rest of your case? See The Complete California Divorce Roadmap for how every stage connects.

Frequently Asked Questions

Is there a spousal support calculator like there is for child support? Not for long-term support — that’s judicial discretion under the 14 factors. Temporary support during the case is often estimated using county guideline software, but this varies by county and isn’t a single statewide formula.

Does a longer marriage always mean longer support? Generally yes as a pattern, but it’s not automatic — the 10-year threshold changes the legal framework (indefinite jurisdiction vs. a half-the-marriage guideline), but the actual outcome in any case still depends on all 14 factors.

Can spousal support be modified later? Generally yes, if circumstances change significantly — though the tax treatment that applied when the original agreement was executed typically carries forward unless a modification expressly changes it.

Does remarriage end spousal support? Under Family Code § 4337, support generally terminates automatically upon the death of either party or the remarriage of the supported party — unless the parties have agreed otherwise in writing.

This article is for general information only and is not legal advice. Spousal support cases involving domestic violence history, significant income disparity, or a marriage near the 10-year threshold can turn on case-specific details — for guidance specific to your situation, consult a licensed California attorney or contact your county court’s Self-Help Center, which offers free assistance.

Sources (verified September 11, 2026):

  • California Family Code § 4320 — the 14 statutory factors for long-term spousal support -California Family Code § 4330(b) — the Gavron warning, codifying In re Marriage of Gavron (1988) -California Family Code § 4336 — marriages of long duration (10-year threshold) and indefinite jurisdiction -California Family Code § 4337 — termination of support upon death or remarriage -California Family Code § 3600 — temporary spousal support -California Family Code § 4325 — reduction or elimination of support for a criminal conviction of an abusive spouse -Senate Bill 711, Chapter 231, Statutes of 2025 — California’s tax conformity change for spousal support, effective for instruments executed on or after January 1, 2026