How to Calculate California State Tax Withholding

To calculate California state tax withholding, you take your gross wages for the pay period, subtract any pre-tax deductions and the standard deduction that matches your filing status and pay frequency on Form DE 4, apply California’s graduated withholding rate schedule for that filing status, then subtract an exemption credit for each allowance you claimed. The Employment Development Department (EDD) publishes two ways to run the math for 2026: a wage bracket lookup (Method A) and an exact formula (Method B). Method A is faster; Method B is more precise and is what payroll systems generally use.

Start With Form DE 4

Every California employee must give their employer a signed Employee’s Withholding Allowance Certificate, Form DE 4, so the employer knows how much state tax to deduct.¹ Since January 1, 2020, the federal Form W-4 controls only federal withholding. You need a separate DE 4 for California.²

The DE 4 gives you three inputs the calculation relies on:

Filing status: Single, Married, or Head of Household.
Number of regular withholding allowances (Worksheet A covers personal and dependent exemptions).
Additional allowances for itemized deductions above the standard deduction (Worksheet B allows one additional allowance for every $1,000, or fraction of $1,000, by which estimated deductions exceed the standard deduction for your filing status).²

Each allowance becomes a credit that reduces the tax computed from the rate schedule. For 2026, one allowance is worth $168.30 per year, which works out to $14.03 per month, $7.01 per semi-monthly pay period, or $6.47 per biweekly pay period.³ More allowances mean less withheld; fewer allowances mean more.

Method A: Wage Bracket Lookup

The wage bracket method is a straight table lookup, published in the EDD’s California Employer’s Guide (DE 44) and its annual withholding schedules.⁴ Pick the table that matches your pay frequency (weekly, biweekly, semi-monthly, or monthly). Find the row containing your gross wages, then follow it across to the column matching your allowance count. The number where they meet is the withholding for that paycheck. No formulas, no annualizing. It can be less precise for very high earners or for wages that fall near a bracket edge, which is where Method B does better.

Method B: The Exact Calculation

Method B is a five-step formula the EDD updates each year.³

Step 1: Find Gross Taxable Wages

Start with total gross wages for the pay period. Subtract any pre-tax deductions your employer runs before state tax, such as 401(k) contributions, health savings account contributions, or employer-sponsored health insurance premiums. What remains is your gross taxable wage for the period.

Step 2: Subtract the Standard Deduction for the Pay Period

For 2026, the annual standard deduction is $5,706 for single filers and $11,412 for married filers or heads of household.³ Divided across pay periods:

Weekly: $110 single / $219 married or head of household
Biweekly: $219 single / $439 married or head of household
Semi-monthly: $238 single / $476 married or head of household
Monthly: $476 single / $951 married or head of household

Subtract the correct figure from your gross taxable wage. The result is the taxable income for that pay period.

Step 3: Annualize and Apply the Rate Schedule

Multiply the pay-period taxable income by the number of pay periods in the year (26 for biweekly, 24 for semi-monthly, 12 for monthly, 52 for weekly) to get an annualized taxable amount. Then apply the tax rate schedule for your filing status. For a single filer in 2026, the withholding rates run on annualized income as follows:

$0 to $11,079: 1.1%
$11,079 to $26,264: 2.2%
$26,264 to $41,452: 4.4%
$41,452 to $57,542: 6.6%
$57,542 to $72,724: 8.8%
$72,724 to $371,479: 10.23%
$371,479 to $445,771: 11.33%
$445,771 to $742,953: 12.43%
$742,953 to $1,000,000: 13.53%
Over $1,000,000: 14.63%

Married filers and heads of household use their own rate schedules in the same 2026 Method B document. These withholding rates run roughly 10% above California’s actual income tax rates (which top out at 12.3% in the nine base brackets, plus a 1% Mental Health Services Tax on taxable income above $1 million for a combined 13.3%). The EDD builds that cushion in so employees are less likely to owe a large balance at filing.³⁵

Step 4: Convert Back to the Pay Period

Divide the annualized tax you just calculated by the number of pay periods in the year. That gives you the per-paycheck tax before the allowance credit.

Step 5: Subtract the Exemption Allowance Credit

Multiply the number of allowances on your DE 4 by the per-period credit ($6.47 biweekly, $7.01 semi-monthly, $14.03 monthly, or $168.30 annually) and subtract that amount.³ What’s left is the California state income tax withheld from that paycheck.

Bonuses and Other Supplemental Pay

The five-step calculation above is for regular wages. When bonuses, commissions, stock options, or other supplemental wages are paid separately from a regular paycheck, your employer can withhold at a flat rate rather than running the amount through the tables.⁶ California uses two flat rates:

10.23% for stock options and bonuses
6.6% for other supplemental wages

Flat-rate supplemental withholding does not take DE 4 allowances into account. If the supplemental pay is combined with a regular paycheck, the employer can instead run the total through the regular withholding method.⁶

When Withholding Should Be Zero

If you had no California or federal income tax liability last year and expect none this year, you can claim exemption from state withholding on Line 3 of the DE 4. Both conditions have to be true.² The exemption is annual: you must file a new DE 4 claiming exempt status by February 15 each year to keep it, and if you’re currently exempt but expect to owe tax next year, you need to give your employer an updated DE 4 by December 1.

A separate exemption on Line 4 applies to qualifying military spouses stationed in California who maintain legal residence in another state and are in California solely to be with their active-duty spouse.²

Redo the Calculation When Life Changes

Submit a new DE 4 whenever something changes the allowance count or filing status the calculation depends on. Common triggers include marriage or divorce, a new child, buying a home that pushes itemized deductions above the standard deduction, a job loss that had provided second-income tax pressure, or a spouse starting or stopping work. You’re expected to give your employer an updated form within 10 days of the change.⁷

Give the signed, dated form to payroll or HR and keep a copy. The updated withholding should generally show up by the next full pay cycle, so check your next stub to confirm.

Why Getting the Number Right Matters

If withholding falls short over the year, California can charge an underpayment penalty, calculated as an interest charge on the underpaid amount under Revenue and Taxation Code Section 19521.⁸ The penalty is waived if the total tax owed after credits and withholding comes in under $500 (under $250 if you’re married filing separately), and you can generally avoid it by making sure your withholding and estimated payments cover at least what you owed the prior year.⁹

Reviewing your withholding at least once a year, and again after any major life change, keeps your DE 4 aligned with the numbers Method A or Method B will actually produce. Catching a shortfall mid-year gives you time to adjust allowances before the next return is due.

1
California Legislative Information. California Unemployment Insurance Code 13040
2
EDD – CA.gov. Employee’s Withholding Allowance Certificate (DE 4)
3
EDD – CA.gov. 2026 Withholding Schedules – Method B
4
Employment Development Department. California Employer’s Guides
5
CA.gov. 2025 California Tax Rate Schedules
6
EDD – CA.gov. Personal Income Tax Withholding Information Sheet
7
EDD – CA.gov. Employer’s Obligations for the DE 4
8
California Legislative Information. California Revenue and Taxation Code 19136
9
Franchise Tax Board. FTB 1024 Penalty Reference Chart