Navigate California Child & Spousal Support with Confidence
Explore SB 343 income shares calculations, K-factor time-share adjustments, and § 4320 spousal support factors using calculators and curated resources designed for attorneys, mediators, and self-represented litigants.
SB 343 modernized the cost-of-living data underpinning guideline support and clarified hardship adjustments. Both parents’ incomes combine to establish a basic obligation, then the K-factor and time-share percentages allocate financial responsibility.
Extraordinary circumstances—medical costs, special needs, education—can trigger deviations from the calculated amount. Courts must document reasons whenever orders depart from guideline results.
Temporary spousal support often follows county guidelines such as the Santa Clara 40/50 rule (40% of payor’s net income minus 50% of payee’s). Permanent support is determined under § 4320, balancing the couple’s marital standard of living, earning capacity, and documented contributions.
Courts remain cautious with long-term orders, frequently providing “Gavron warnings” that encourage recipients to pursue self-sufficiency and revisit support as circumstances evolve.
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California Family Law FAQ
How did SB 343 change California child support calculations?
SB 343 modernized the income shares model beginning January 1, 2024 by updating the economic data tables, refining K-factor adjustments, and expanding hardship consideration rules.
What is the California K-factor?
The K-factor determines how combined child support obligations are allocated between parents based on custodial time. It is a core component of the guideline formula defined in Family Code § 4055.
How are county-specific temporary spousal support formulas handled?
California counties like Santa Clara, Los Angeles, and Alameda maintain recommended temporary support formulas. Our calculator explains the 40/50 rule and county variations while still highlighting court discretion.
What are the § 4320 permanent spousal support factors?
Family Code § 4320 lists 14 factors including earning capacity, standard of living, contributions to education, documented domestic violence, and tax consequences. Judicial discretion governs final awards.
Ready to Apply California Support Formulas?
Use our calculators to apply SB 343 child support and county spousal support formulas, then reference the cited statutes to prepare for mediation or court proceedings.
Start with Child SupportCalculations and summaries reference the California Family Code and SB 343 updates. They are educational in nature and do not replace individualized legal counsel. Consult a California family law attorney to evaluate your specific case.