CleanCalc

Estimate your

Child or Spousal Support

Five or six steps. The math shown. One calculator per state.

Sample California child support calculation showing the §4055 formula populated with real values, resulting in $1,352 per month. Inputs: higher-earner net $5,000/mo at 30% custody, lower-earner net $3,000/mo at 70% custody, two children. Formula: CS equals K times open-bracket HN minus open-paren H-percent times TN close-paren close-bracket times multi-child multiplier. Substituted: CS equals 0.325 times $2,600 times 1.6 equals $1,352 per month from the higher earner to the lower earner. SAMPLE CALCULATION · CAL. FAM. CODE §4055 HIGHER EARNER $5,000/mo 30% custody LOWER EARNER $3,000/mo 70% custody CHILDREN 2 multi-child × 1.6 CS = K × [HN − (H% × TN)] × multiChild CS = 0.325 × [ $5,000 − ( 0.3 × $8,000 )] × 1.6 CS = 0.325 × $2,600 × 1.6 CS = $1,352 / month Higher earner pays this monthly
Sample California §4055 calculation: $5,000/mo higher earner at 30% custody plus $3,000/mo lower earner at 70% custody, two children, yields $1,352 per month child support.

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California Child & Spousal Support

Six questions. The math shown. Cal. Family Code §4055 (post-SB-343 K-table, operative September 1, 2024) and §3600 temporary spousal support in your browser, in under two minutes.

Open the California calculator →

Free estimate. $29 for the worksheet bundle: a PDF showing the full guideline calculation, plus the FL-192 notice and, if you claim §4057 deviation, the FL-342(A) form. Your answers never leave your browser.

Shows the math

We render the §4055 formula with your values substituted in, so you understand why the number is what it is, not just what it is.

Privacy first

Calculation runs entirely in your browser. Nothing about your income or family is sent to our servers.

Current with the law

Post-SB-343 §4055 K-table, operative September 1, 2024. Most California calculators online still reflect the pre-2024 formula.

$29 flat, no subscription

One-time $29 for the worksheet bundle. No per-seat license, no monthly fee. Compare: Xspouse, an attorney tool, is $399 a year for up to five users.

How CleanCalc compares (California)

  CleanCalc DissoMaster Xspouse DCSS (state)
Child support ✓ sunset 2025 ✓ ✓
Spousal support ✓ (temporary) sunset 2025 ✓ ✓ (temporary)
Price $29 / PDF discontinued $399 / yr, up to 5 users free
Post-SB-343 K-table (2024-09-01) ✓ n/a ✓ ✓
Judicial Council certified ✗ until 2025 ✓ ✓ (recertified 2026)
Show-the-math transparent ✓ discontinued tax forms + nets nets + taxes; no K or formula
Designed for pro-se filers ✓ ✗ ✗ partial
FL-192 + FL-342(A) blanks bundled ✓ discontinued ✗ ✗

CleanCalc is not Judicial Council certified. Five calculators currently are, including Xspouse and the free DCSS calculator. We disclose this prominently because the certification gap is real. We cost less than the paid attorney tools and show every step of the math; we lose on certification.