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California: Sole Physical Custody Child Support Calculator

In traditional sole custody arrangements where one parent has primary physical custody (typically 80% or more of annual overnights) and the other exercises standard visitation, standard statutory economic tables and percentage guidelines govern.

⚖️ California Statutory Rule for Sole Custody Guidelines:

Standard timeshare H% (typically 15% to 20% for alternate weekends and holidays) is factored directly into the algebraic guideline equation.

Statutory Case Parameters

California (CA)
1Governing Jurisdiction
Statutory Basis: Cal. Fam. Code § 4055 & § 4057
2Monthly Incomes & Allowable Deductions
$
Pre-tax salary, wages, business revenue
$
Mandatory union dues & retirement
$
Pre-tax salary, wages, business revenue
$
Mandatory union dues & retirement
3Number of Dependent Children Covered
4Annual Custody Overnights (Out of 365)
Parent A: 60 Overnights (16.4%) Parent B: 305 Overnights (83.6%)
0 nights (Sole Parent B)183 nights (Equal 50/50)365 nights (Sole Parent A)
5Children's Health Insurance Premium
$
Only incremental premium for child(ren)
Cost is credited or prorated by income shares
Parent A (Payor)CA Guideline
Recommended Statutory Obligation
$884 / mo
Annualized: $10,608 / year
Combined Income$10,000
Basic Support Total$1,006
Parent A Share65%
Parent B Share35%

Key Legal Principles for Sole Custody Guidelines in California

Statutory Framework & Court Standards

  • The non-custodial parent (obligor) is responsible for their full statutory share or percentage without parenting-time offsets.
  • Self-Support Reserve (SSR) protections prevent child support orders from pushing the payor below the federal or state poverty threshold.
  • Mandatory deductions (FICA, mandatory retirement, union dues, prior child support orders) reduce gross income before calculating obligation.
  • Direct payments (buying clothes, groceries during visitation) do not count toward official court-ordered child support.

Filing & Required Court Attachments

When requesting child support orders under Sole Custody Guidelines, judges in the California Judicial Council & Department of Child Support Services (DCSS) require formal submission of official financial statements and guideline calculation schedules.

Required Form: Child Support Information and Order Attachment
Form Code: FL-342
Statutory Reference: Cal. Fam. Code § 4055 & § 4057

More California Guideline Calculations

← Standard California Calculator50/50 Shared Custody →High-Income Deviation →