They’re both financial obligations in a divorce, but child support and spousal support work very differently. Here’s a clear comparison.
Quick Comparison
| Factor | Child Support | Spousal Support |
| Purpose | Support the children’s needs | Support the lower-earning spouse |
| How calculated | Strict guideline formula | Judge’s discretion (14 factors) |
| Who pays | Non-custodial parent (usually) | Higher-earning spouse |
| Modifiable | Yes, when circumstances change | Yes, when circumstances change |
| Tax deductible | No | No (since 2019) |
| Ends when | Child turns 18 (or 19 if in high school) | Court-ordered date, remarriage, or death |
| Can be waived | No (it’s the child’s right) | Yes (by agreement) |
| Criminal enforcement | Yes (contempt, license suspension) | Yes (contempt) |
Child Support: The Rules
It’s Not Optional
Child support is the child’s right — not the parent’s. Even if both parents agree to waive it, the court can still order it. You can’t bargain it away.
Formula-Based
California uses a mathematical formula (DissoMaster software) that considers: – Both parents’ incomes – Percentage of time each parent has custody – Tax filing status – Allowable deductions
Ends at 18 (Usually)
Child support ends when the child turns 18 or 19 if still in high school. There’s no automatic college support obligation in California.
Spousal Support: The Rules
It IS Optional
Spousal support can be waived by agreement (including in a prenuptial agreement). Not every divorce involves spousal support.
Discretion-Based
Unlike child support, there’s no formula for long-term spousal support. The judge weighs 14 factors including earning capacity, marriage length, standard of living, and more.
Temporary Duration (Usually)
The general rule is support for half the length of the marriage (marriages under 10 years). For marriages over 10 years, the court retains jurisdiction but still expects the supported spouse to become self-supporting.
How They Interact
Spousal support and child support affect each other: – Spousal support paid reduces the payer’s income for child support calculations – Spousal support received increases the recipient’s income for child support calculations – Often, attorneys and mediators adjust both amounts together to reach an optimal arrangement
How Superior Court Docs Can Help
Whether you need to establish, modify, or understand your support obligations, Superior Court Docs prepares the necessary petitions and modifications.
📞 (213) 973-7248 or get started.
Related: Complete Child Support Guide | Spousal Support Guide | Child Support Calculator
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