California's State Disability Insurance (SDI) program is one of the most widely used short-term disability programs in the country — and it's funded entirely by workers through a payroll tax. If you've ever looked at your California pay stub and wondered what "SDI" means or why it's being deducted, this article explains how the tax works, what it funds, and how it connects to the broader landscape of disability benefits.
California SDI is a payroll deduction that funds two state-run programs:
Both programs are administered by the California Employment Development Department (EDD), not the Social Security Administration (SSA). This is an important distinction — California SDI is a state program, while Social Security Disability Insurance (SSDI) is a federal program with entirely different rules, eligibility standards, and benefit structures.
The SDI withholding rate changes annually and is set by the EDD based on program costs and reserve fund levels.
Historically, the SDI tax applied only up to a wage ceiling — meaning once your earnings hit a certain cap for the year, no further SDI was deducted. However, starting January 1, 2024, California removed the taxable wage ceiling under Senate Bill 951. This was a significant structural change.
Here's how the rate structure has evolved:
| Year | Tax Rate | Wage Ceiling |
|---|---|---|
| 2022 | 1.1% | $145,600 |
| 2023 | 0.9% | $153,164 |
| 2024 | 1.1% | No cap (unlimited) |
| 2025 | 1.2% | No cap (unlimited) |
📌 Note: These rates adjust annually. Always verify the current rate with the EDD or your payroll provider, as figures change each January 1.
Because the wage ceiling was eliminated in 2024, higher earners now pay SDI tax on their entire annual income, which represents a meaningful change for workers earning above the former ceiling.
In California, employees pay the SDI tax — employers do not contribute to SDI (unlike Social Security and Medicare taxes, where employers match employee contributions).
The deduction appears automatically on your paycheck if your employer is covered under California's SDI program. Most private-sector employers are covered. Some employers participate in Voluntary Plan (VP) programs, which are employer-administered alternatives to the state SDI plan — these must provide benefits at least as generous as the state plan.
State and local government employees may or may not be covered depending on their employer's arrangement with the EDD.
If you become disabled and qualify for SDI benefits, the program replaces a portion of your lost wages — not your full salary.
The benefit amount depends on your base period earnings — the wages you earned during a specific 12-month window before your disability began. Higher earners receive a larger weekly benefit amount, up to the program maximum.
Starting in 2025, as a result of SB 951, lower-wage workers can receive up to 90% of their weekly wages, while higher earners receive approximately 60–70%. This tiered replacement rate was introduced alongside the removal of the wage cap.
Benefits are generally paid for up to 52 weeks for most SDI claims, though this can vary depending on the nature of the disability and medical certification.
This is where many Californians get confused — and understandably so.
| Feature | California SDI | Federal SSDI |
|---|---|---|
| Administered by | California EDD | Social Security Administration |
| Duration | Short-term (up to ~52 weeks) | Long-term (ongoing, if disabled) |
| Funded by | California SDI payroll tax | Federal Social Security payroll tax (OASDI) |
| Eligibility standard | Unable to perform your regular job | Unable to do any substantial gainful work |
| Waiting period | 7-day unpaid waiting period | 5-month waiting period |
| Medical review | EDD-reviewed medical certification | SSA/DDS full disability determination |
SSDI requires a much stricter and more thorough evaluation — including your work credits, medical evidence, Residual Functional Capacity (RFC) assessment, and whether your condition meets the SSA's definition of disability. Qualifying for California SDI does not automatically mean you'll qualify for federal SSDI.
If you receive both California SDI and federal SSDI at the same time, the SSA may offset your SSDI payment. The SSA has rules about how public disability benefits interact with your federal benefit, and overlapping payments from both programs can affect how much SSDI you actually receive.
This is one of the less-understood intersections between state and federal disability programs, and it's worth being aware of if you're in a situation where both programs apply.
Understanding the SDI tax rate tells you what you're contributing — and what the program is designed to provide. But how those rules translate to your specific situation depends on your earnings history, your employer's SDI coverage, whether your condition qualifies for state SDI versus federal SSDI, and how long you've been out of work.
The rate is public. The math is calculable. What it means for your benefits is the part that depends entirely on your own circumstances.