Child Support in Riverside County, California

Riverside County stretches from the Inland Empire down through the Coachella Valley and out to the desert communities, and its size means child support matters are handled across several court locations rather than a single downtown building. Parents in Riverside, Moreno Valley, Corona, Murrieta, Temecula, and the county's many other cities and unincorporated areas bring their cases to the Superior Court of California, County of Riverside, or to the county's Local Child Support Agency.

Like every county in the state, Riverside applies California's statewide uniform guideline formula for calculating support (Family Code section 4055). The guideline weighs both parents' net disposable incomes together with the timeshare, meaning how much time the child actually spends in each parent's care. Once those numbers are entered, the resulting figure is presumed correct under the law.

Parents in Riverside County have two paths into a support order. One is filing a Request for Order (Form FL-300) along with an Income and Expense Declaration (Form FL-150) inside an existing divorce, parentage, or custody case. The other is asking the county's Local Child Support Agency, a branch of the California Department of Child Support Services, to open a case on the family's behalf. The forms themselves don't change from county to county; what does change locally is which courthouse handles the filing and where the local agency's office is.

Given how spread out Riverside County is, it's worth running the numbers before choosing a courthouse or scheduling a hearing. Try our free California Guideline Child Support Calculator at /tools/california-child-support-calculator for an estimate. If both parents already agree on a number, they can put it in a written stipulation and ask a judge to sign it.

How child support is calculated in California

California sets child support with a statewide uniform guideline (Family Code section 4055) that applies the same way in Riverside County as everywhere else. The formula is based mainly on two things:

1. Both parents' net disposable incomes.
2. The percentage of time the child spends with each parent (the timeshare).

The guideline amount is presumed to be correct, and courts use a calculator to run the numbers. Because the result depends on accurate income, the Income and Expense Declaration (Form FL-150) you file is what drives your number.

Where child support cases are handled in Riverside County

Child support in Riverside County is handled through the Superior Court of California, County of Riverside, with the county seat in Riverside, and the county's Local Child Support Agency, which is part of the California Department of Child Support Services. There are two common paths:

1. Either parent files a Request for Order (Form FL-300) with an Income and Expense Declaration (Form FL-150) inside a divorce, parentage, or custody case.
2. The Local Child Support Agency opens a case to establish, collect, and enforce support, often at no cost to the parents.

Because courthouse locations and the local agency office change over time, confirm current details using the official California Courts court finder:

Find the Riverside County Superior Court (official California Courts finder)

Local notes for Riverside County

Because Riverside County covers such a large geographic area, from the western Inland Empire cities to Temecula and the desert, confirm which courthouse has jurisdiction over your case before you file, using the official California Courts court finder. The county's Local Child Support Agency operates separately from the courts, and its contact information is available through the California Department of Child Support Services website.

Riverside's self-help centers assist parents who are representing themselves with completing Form FL-150 and other required paperwork and can walk through the general court process, though staff are not permitted to give legal advice about how the law applies to your specific situation. The income figures reported on the FL-150 are what the guideline formula actually runs on, so getting those numbers right matters more than anything else in the filing.

As under California law generally, child support in Riverside County typically runs until the child turns 18, or 19 if they are still a full-time high school student living at home and not supporting themselves. If either parent's income or the custody timeshare changes meaningfully after the order is in place, either one can ask the court to modify it.

Riverside County Child Support FAQs