California Guideline Child Support

Computes statewide-uniform-guideline child support under Family Code §4055 (the SB 343 formula, effective Sept 1, 2024) with a full federal + California tax engine for §4059 net disposable income — and shows every step.

The case

Children Tax year

Children & parties optional — improves the report & shows when support ends

Names and dates of birth are optional and don't change the guideline amount. Add a DOB to see when each child's support ends (§3901) and a payment timeline. A high-school graduation date is only needed if it falls after the 18th birthday.

Gross income Filing status

Tax dependents Timeshare %

Self-employed

Other monthly deductions (§4059)

Health insurance premiums Mandatory retirement Mandatory union dues Other support paid (different case) Job-related expenses Hardship Net disposable override

Add-ons & options

Childcare (monthly) Uninsured health (monthly)

Apply low-income adjustment (§4055(b)(7), rebuttable)