Section 125 Health Benefits in California: What Employees Should Know

• Employee-paid health premiums through a cafeteria plan are exempt from income tax withholding, Social Security tax and Medicare tax (IRS Publication 15-B, 2026).
• The employee share of FICA is 7.65%, made up of 6.2% Social Security and 1.45% Medicare, and the Social Security wage base is $184,500 in 2026 (IRS Publication 15, 2026).
• California's EDD lists employee salary reductions for accident and health insurance as not subject to UI, ETT, SDI or personal income tax withholding, when the benefit meets the required conditions (EDD DE 231EB, rev. 2017).
• California's top marginal income tax rate is 13.3%, the highest in the nation (Tax Foundation, as reported in 2020).
• Covered California 2027 open enrollment runs November 1, 2026 to January 31, 2027, and the preliminary average rate change is 9.9% (Covered California; coverhealthca.com, October 2026).

If you work in California and see a Section 125 line on your pay stub, the short answer is that it is probably your health premium, taken out before most taxes. California has a graduated income tax and a state disability insurance payroll tax, so the savings can reach past federal tax and FICA. This guide shows what you save, when you can change it, and what to ask HR if a deduction surprised you.

Reviewed by a licensed benefits professional. Last reviewed: October 17, 2026.

What are Section 125 health benefits in California?

Section 125 health benefits in California are health, dental or vision premiums that your employer lets you pay with pay that has not been taxed yet. The federal rule is the same in every state.

A Section 125 plan, also called a cafeteria plan, is a written employer plan that lets employees choose between cash pay and certain benefits. A cafeteria plan can offer accident and health coverage, dependent care assistance, group-term life insurance and an HSA (IRS Publication 15-B, 2026). Employee-paid accident and health benefits are exempt from income tax withholding, Social Security tax and Medicare tax (IRS Publication 15-B, 2026). Benecor's Section 125 pre-tax guide→ covers the federal rules in more detail.

How much does a Section 125 plan save on a California paycheck?

A Section 125 plan saves the typical California employee at least 19.65 cents on every pre-tax dollar in this example, which is 12% federal income tax plus 7.65% FICA. California payroll and income tax rules can add more, depending on your pay.

Here is a worked example. The numbers are hypothetical. An employee earns $5,000 a month and pays $400 a month toward health premiums. The 7.65% FICA rate comes from 6.2% Social Security plus 1.45% Medicare (IRS Publication 15, 2026). The example assumes a 12% federal income tax bracket. It leaves out California tax on purpose, because your own California bracket depends on your income.

California's top marginal income tax rate is 13.3%, the highest in the nation (Tax Foundation, as reported in 2020). Most employees fall in much lower brackets, so ask a tax professional what applies to you. If you earn above the Social Security wage base of $184,500 in 2026, the 6.2% part stops applying to your pay above that line (IRS Publication 15, 2026).

Is Section 125 taxable in California?

Not for the standard employee health premium, according to California's Employment Development Department (EDD). Its information sheet on the taxability of employee benefits lists "Employee salary reduction for dependent care assistance, accident, health, and/or group-term life insurance" as not subject to UI, ETT, SDI or personal income tax withholding (EDD DE 231EB, rev. 2017).

Two exceptions on the same sheet matter. Cash payments in lieu of qualified benefits are subject to all of those taxes, and employer contributions into a cafeteria plan for a health savings account are also subject. The EDD notes that the table applies only when the benefit meets its required conditions. Your own payroll team applies these rules, so ask them if a line looks wrong.

SDI is California's state disability insurance payroll tax. A lower SDI wage base can mean a slightly smaller wage replacement benefit if you ever file a claim, so mention that to a tax professional if it worries you.

You can see the federal effect on your own W-2. Box 1, wages for federal income tax, should be lower than your gross pay by the amount of your pre-tax deductions. If it is not, ask HR or payroll why. Benecor's guide to W-2 Box 14→ explains the Section 125 line that some employers print there.

California employees often ask about the employer-side Section 125 rules in California→. Those cover plan setup and employer savings, while this page covers what a single employee sees on a pay stub.

Can I change my Section 125 election in California?

Usually only after a qualifying life event, and only if your plan allows it. Under 26 CFR 1.125-4, a plan may permit a change when your status changes, such as marriage, divorce, a birth or adoption, or a change in employment (26 CFR 1.125-4, 2026).

The plan is not required to allow every change, and the change must fit the event. Benecor's list of Section 125 qualifying life events→ shows the common ones and the timing rules. Section 125 elections are generally locked for the plan year, so a California employee who wants out mid-year needs an event the plan recognizes.

What happens if I decline my California employer's coverage?

Declining employer coverage in California means you would shop on Covered California, the state marketplace, so check the alternatives before you opt out. About 90% of Covered California enrollees qualify for financial help (NBC Palm Springs, October 2026).

The 9.9% figure is a preliminary average, so check Covered California for the final rate on the plan you want. Premiums paid through Section 125 come out before federal income tax and FICA (IRS Publication 15-B, 2026), which lowers what employer coverage costs you. If the plan itself is the problem, a case review can help you understand your options before you decide.

How do I ask HR about my Section 125 plan?

Send HR a short written request and keep the reply. Copy this email and fill in the brackets.

Benecor's Section 125 cafeteria plan guide→ explains how the plan works. If you want a Benecor benefits expert to look at your situation, contact Benecor Health→.

Sources: IRS Publication 15-B, Employer's Tax Guide to Fringe Benefits (2026); IRS Publication 15, Employer's Tax Guide (2026); IRS Tax Topic 424, 401(k) Plans (2026); California Employment Development Department, DE 231EB Taxability of Employee Benefits (rev. 2017); Tax Foundation, as reported by California Globe (2020); Covered California, 2027 dental rates and open enrollment news release (August 25, 2026); coverhealthca.com, Covered California rates (updated October 3, 2026); NBC Palm Springs, Covered California open enrollment (October 14, 2026); 26 CFR 1.125-4, Permitted election changes (2026).