California calculates spousal support in two stages. Temporary support — paid while the divorce is pending — follows a county guideline formula based on each spouse’s income. Long-term support, ordered at judgment, is not formula-based: a judge weighs the factors listed in Family Code § 4320, beginning with the marital standard of living.
“How much will I pay?” and “How much will I receive?” are usually the first questions in any divorce involving a real income gap. The honest answer is that it depends on which support you mean, because California treats the two stages very differently — and a number that looks right for one can be far off for the other.
Temporary support follows a formula
While a divorce is working its way through the court, either spouse can ask for temporary spousal support to keep finances stable in the meantime. For this stage, most California counties use a guideline formula run through software such as the DissoMaster. A common version subtracts half of the lower earner’s net income from roughly 40% of the higher earner’s net income, then adjusts for taxes and any child support. The result is a quick, fairly predictable figure.
The key point: this formula exists only to hold the line temporarily. Courts are not supposed to use it to set support at the end of the case.
Long-term support is decided by the § 4320 factors
When the divorce is finalized, the court sets long-term (or “permanent”) spousal support — and here the formula disappears entirely. Instead, the judge must weigh the factors in Family Code § 4320. Those include:
- The marital standard of living, and each spouse’s ability to maintain it
- Each spouse’s earning capacity, marketable skills, and time needed for any retraining
- The supporting spouse’s ability to pay
- The needs of each spouse and their assets and debts
- The duration of the marriage
- The age and health of both spouses
- Any documented history of domestic violence, and the tax consequences to each party
Because these factors are weighed case by case, two couples with identical incomes can end up with very different orders. This is where the detailed financial picture — and how it’s presented — does the real work.
How long does support last?
For marriages of less than 10 years, support often runs for about half the length of the marriage, as a general guideline rather than a hard rule. For a “long-term” marriage of 10 years or more, the court generally keeps jurisdiction open rather than setting a fixed end date — though that does not mean support continues forever. The supported spouse is expected to work toward becoming self-supporting within a reasonable time.
Can the amount change later?
Usually, yes. Unless the parties specifically agreed that support is non-modifiable, an order can be revisited when there’s a material change in circumstances — a significant change in either income, a job loss, retirement, or the supported spouse’s remarriage or cohabitation.
Spousal support is one of the most fact-driven issues in any divorce, and small differences in how income and standard of living are documented can move the number substantially. If you’re facing a support question, our family law practice can help you understand where you’re likely to stand.