Why is this California page narrower than the public California calculator?

Because the public California calculator covers many more sections, including hardship, add-ons, temporary spousal support, and other special paths. This page covers only the 2024 new-guideline core path, so cases that need those other sections should be checked with the public California calculator.

Why does this page say 2024 only?

Because the California calculation depends on the tax year, and the public calculator currently warns that later tax-law changes are not yet reflected. This page does not estimate 2025 or later years.

Does this California estimate include add-ons or hardship children?

No. This page excludes add-ons, hardship children, temporary spousal support, prior-period arrears, and other special paths.

Why can the result become a range instead of one number?

When the low-income threshold is triggered, a single exact number would overstate the precision of the estimate, so the page shows a range instead.

Is this the official California child support calculator?

No. It is an estimate page based on California public references and a narrow 2024-only core path. The court or commissioner has final authority.

California Child Support Calculator

To estimate California child support under the 2024 SB 343 guideline, enter case setup, both parents' taxable and non-taxable income, parenting time share, filing status, and common 4059-style deductions (union dues, mandatory retirement, health premiums, child or spousal support already paid). The calculator returns the paying parent, the monthly support estimate, and the total net disposable income — narrow 2024 path, no add-ons, hardship, or arrears.

California 2024 guideline inputs

California is more tax-sensitive than Texas or Florida, so this page uses filing status, income buckets, parenting time, and a narrow set of deduction fields. The scope is fixed to the 2024 new-guideline path.

Case setup

Enter the case-wide inputs first, then complete each parent's income and deduction fields.

Children in this case

Parent 1 timeshare (%)

Enter a value from 0 to 100. Parent 2 uses the remainder.

Apply low-income rangeWhen enabled, the page shows a range if the paying parent's gross monthly income falls below the 2024 full-time California minimum-wage threshold.

Parent 1

Income

These monthly income fields feed the California core-path estimate.

Filing status

Taxable incomeNon-taxable income

Deductions

These fields reduce net disposable income in this estimate.

Union duesMandatory retirementHealth premiumsOther-case child support paid

Spousal support paid

Parent 2

Income

These monthly income fields feed the California core-path estimate.

Filing status

Taxable incomeNon-taxable income

Deductions

These fields reduce net disposable income in this estimate.

Union duesMandatory retirementHealth premiumsOther-case child support paid

Spousal support paid

Calculations run in your browser. This page is informational only and should not be treated as legal advice, a certified calculator, or a court order.

California estimate result

The result shows the 2024 path used here, each parent's estimated net disposable income, the higher-earner formula inputs, and a low-income range when triggered.

Estimated monthly child support

$4,398.70

Summary

Parent 1 pays Parent 2 is the likely paying side. Using $9,947.64 total net disposable income, this 2024 new SB 343 guideline core path only estimate projects $4,398.70 per month.

Likely paying side

Parent 1 pays Parent 2

Total NDI

$9,947.64

Likely receiving side

Parent 2

Guideline mode

2024 new SB 343 guideline core path only

Formula inputs usedShow

Tax year

2024

Higher earner

Parent 1

Higher-earner timeshare

30.00%

K factor used in the formula

1.30

One-child base amount

$4,398.70

Child-count multiplier

1.000

Support before low-income range

$4,398.70

Parent 1 tax summaryShow

Gross monthly income

$9,000.00

Parent 1 NDI

$6,367.91

Federal income tax

$1,300.08

California income tax

$493.51

Social Security and Medicare

$688.50

Other deductions

$150.00

Parent 2 tax summaryShow

Gross monthly income

$4,500.00

Parent 2 NDI

$3,579.73

Federal income tax

$374.67

California income tax

$111.35

Social Security and Medicare

$344.25

Other deductions

$90.00

Current page constantsShow

These are the fixed constants and scope limits used by this California estimate.

Minimum wage used

$16.00 / hour

Low-income threshold used

$2,773.33

2024 Social Security wage base

$168,600.00

Formula path

2024 new SB 343 guideline core path only

AssumptionsShow

Page scope

2024 new SB 343 guideline core path only

This page does not include hardship, add-ons, temporary spousal support, arrears, or the parents-living-together special path.

This page is an estimate only. It mirrors a narrow California 2024 SB 343 core path and public official references, but it is not a certified court calculator and it does not include add-ons, hardship, temporary spousal support, or arrears.

How this California estimate works

This page covers the California core path only; it does not reproduce every section of the public calculator.

1. Estimate each parent's net disposable income

The page starts with taxable and non-taxable monthly income, then applies filing-status-based tax assumptions plus common deductions such as union dues, mandatory retirement, health premiums, and support already being paid.

2. Apply the high-earner and timeshare formula

The higher earner, the total net disposable income, and the higher earner's parenting-time share are used in the California guideline-style formula before the child-count multiplier is applied.

3. Show a low-income range when the threshold is triggered

If the paying parent's gross monthly income falls below the 2024 full-time California minimum-wage threshold, the page shows a low-income adjustment range instead of a single false-precision number.

Important California notes

This page is fixed to tax year 2024 and the new SB 343 guideline path.

This page covers less than the public California calculator: it does not include hardship, add-ons, temporary spousal support, or arrears.

Tax handling here is limited to filing status, standard deductions, common payroll taxes, and a small set of direct deduction fields shown on the page.

The public California calculator page currently carries a decertified warning related to later tax-law changes. Treat any result, including this one, as an estimate only.

Court or commissioner review still has final authority.

Official California references

These public sources define the scope, formula boundaries, and tax-year caveats used by this page.

California Family Code § 4055

Official California guideline formula source for the high-earner, total net disposable income, timeshare, and child-count multiplier structure used in this estimate.

California Family Code § 4059

Official California source listing the core deductions from annual gross income to reach annual net disposable income.

California DCSS: Guideline Calculator

Public California calculator landing page showing the current decertified warning and official estimate-only boundary.

California DCSS: Guideline Calculator User Guide

Public California guide documenting the calculator sections and showing that 2024 is the key year for the old-versus-new guideline split.

Other state calculators

Use the child support hub to see all state calculators, or open another state's page directly. Each state page keeps its own scope.

Child Support Calculator Hub

Overview of why child support calculators are state-specific and which states are covered.

Open page

Texas Child Support Calculator

Texas page following the Texas OAG single-source-income workflow and published constants.

Open page

Florida Child Support Calculator

Florida page using a worksheet-style model with both parents' net monthly income, child costs, credits already paid, and time-sharing logic.

Open page

California child support FAQ

Why is this California page narrower than the public California calculator?: Because the public California calculator covers many more sections, including hardship, add-ons, temporary spousal support, and other special paths. This page covers only the 2024 new-guideline core path, so cases that need those other sections should be checked with the public California calculator.
Why does this page say 2024 only?: Because the California calculation depends on the tax year, and the public calculator currently warns that later tax-law changes are not yet reflected. This page does not estimate 2025 or later years.
Does this California estimate include add-ons or hardship children?: No. This page excludes add-ons, hardship children, temporary spousal support, prior-period arrears, and other special paths.
Why can the result become a range instead of one number?: When the low-income threshold is triggered, a single exact number would overstate the precision of the estimate, so the page shows a range instead.
Is this the official California child support calculator?: No. It is an estimate page based on California public references and a narrow 2024-only core path. The court or commissioner has final authority.