San Diego child support attorneys: calculate, enforce, modify.
California uses a statewide guideline formula — but income, custody timeshare, and add-ons are where real disputes live. We make sure the order reflects the truth of your finances.
What you need to know
California child support is set by the statewide uniform guideline (Family Code §4055). The DissoMaster™ calculation considers each parent's income, the timeshare percentage with each parent, tax filing status, deductions, and certain add-ons (childcare, healthcare, education).
- Guideline support is calculated using DissoMaster™ or X-Spouse software.
- Both parents' gross incomes from all sources are considered, including bonuses and self-employment.
- Custody timeshare percentage substantially impacts the support amount.
- Mandatory add-ons include childcare and uninsured medical expenses.
- Support generally continues until age 18 (or 19 if still in high school full-time).
Related topics & situations
How Child Support is Calculated
California's guideline formula explained step by step.
Child Support Modification
Filing to increase or decrease support after a change.
Child Support Enforcement
Wage garnishment, license suspension, and contempt.
Back Child Support / Arrears
Collecting unpaid support and 10% statutory interest.
Child Support for College
When and how college costs can be ordered in CA.
Stopping Child Support
Termination at emancipation, age, or marriage.
Self-Employed Parent Income
Imputing income and analyzing business records.
Imputed Income
When the court assigns earning capacity to a parent.
Add-on Expenses
Childcare, healthcare, special needs, and extracurriculars.
Above-Guideline Support
When extraordinary income justifies departing from formula.
California Family Code §4055 sets the guideline child support formula. Departures are rare and require specific written findings. The Department of Child Support Services (DCSS) can enforce orders through wage assignments under Family Code §5230.
Source: California Family Code & California State Bar guidance. General information only.
Child Support — frequently asked questions
How is child support calculated in California?
What income is included in the child support calculation?
Can I modify my child support order?
What happens if my ex doesn't pay child support?
Does timeshare affect how much child support I pay or receive?
Is child support taxable in California?
When does child support end in California?
Can the court order child support for college?
What is DissoMaster?
Can child support be enforced across state lines?
What if my income changes significantly?
Does new spouse income affect child support?
Speak with a San Diego family law attorney today.
Every conversation is private. Most clients leave the first call with a clear sense of what to expect — what California law says, what your case is likely worth, and what to do next.