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How California SDI Payments Are Calculated: A Plain-English Guide to the Formula

By Michael Steiner | SDI Advisor

One of the first questions people ask when they’re considering filing for California State Disability Insurance is: how much will I actually receive?

It’s a fair question. Financial planning during a disability period depends on knowing what’s coming in. And the EDD’s official calculation documentation — while accurate — is written in a way that leaves most people more confused than when they started.

This guide breaks down the California SDI payment calculation in plain English. No jargon, no government form references — just a clear explanation of how the EDD arrives at your weekly benefit amount and what you can do to estimate it before you file.

The Short Answer

In 2026, California SDI pays between 70% and 90% of your weekly wages, up to a maximum of $1,765 per week. Lower-income earners receive the higher replacement rate of 90%. Higher-income earners receive 70%, subject to the weekly cap.

This is a significant improvement over prior years. California raised the SDI replacement rates substantially under SB 951, which took full effect in January 2025. If you’ve seen older guides quoting 70-90%, those figures are outdated.

Your benefit is based on wages you earned during a specific period before your disability — called your base period — not on your current salary or most recent paycheck.

Step 1: Understanding Your Base Period

The base period is the 12-month window of earnings the EDD uses to calculate your benefit. It is not the most recent 12 months — it’s a specific window defined by when you file.

Standard Base Period: The standard base period covers the first four of the last five completed calendar quarters before the quarter in which your disability begins.

Here is what that means in practice:

If your disability begins in April 2026 (Q2 2026), the EDD looks back at the five completed quarters before Q2 2026 — which are Q1 2026, Q4 2025, Q3 2025, Q2 2025, and Q1 2025 — and uses the first four of those five: Q4 2025, Q3 2025, Q2 2025, and Q1 2025.

The most recently completed quarter — Q1 2026 in this example — is excluded from the standard base period. This is counterintuitive but important: if you received a raise in the most recent quarter, it won’t be reflected in your benefit calculation under the standard base period.

Alternative Base Period: If you don’t have enough wages in the standard base period to qualify, the EDD may use an alternative base period covering the four most recently completed calendar quarters. This helps workers who recently entered the workforce or had a gap in employment.

For more on what the base period means and how it affects your eligibility, read our guide on what a base period is for California SDI.

Step 2: Finding Your Highest Quarter Wages

Once the EDD identifies your base period, they look at your wages in each of the four quarters and identify the quarter in which you earned the most. This highest-earning quarter is the primary driver of your weekly benefit amount.

Example:

  • Q1 2025: $14,000
  • Q2 2025: $18,500 ← highest quarter
  • Q3 2025: $16,200
  • Q4 2025: $15,800

In this example, the EDD uses the Q2 2025 wages of $18,500 as the basis for your benefit calculation.

Step 3: Calculating Your Weekly Benefit Amount

California SDI uses a tiered replacement rate system introduced under SB 951. Your replacement rate depends on how your wages compare to the California statewide average weekly wage (AWW).

For 2026:

  • If your wages are below the statewide AWW → you receive 90% of your weekly wages
  • If your wages are above the statewide AWW → you receive 70% of your weekly wages
  • Either way, benefits are capped at the $1,765 weekly maximum

To calculate your weekly benefit:

  1. Divide your highest quarter wages by 13 (the number of weeks in a quarter) to get your average weekly wage
  2. Apply the appropriate replacement rate (90% or 70%)
  3. The result is your weekly SDI benefit, subject to the $1,765 cap

Lower-income example (90% rate):

  • Highest quarter wages: $12,000
  • Average weekly wage: $12,000 ÷ 13 = $923.08
  • Replacement rate: 90%
  • Weekly SDI benefit: $923.08 × 0.90 = $830.77

Middle-income example (90% rate):

  • Highest quarter wages: $18,500
  • Average weekly wage: $18,500 ÷ 13 = $1,423.08
  • Replacement rate: 90% (below statewide AWW)
  • Weekly SDI benefit: $1,423.08 × 0.90 = $1,280.77

Higher-income example (70% rate):

  • Highest quarter wages: $35,000
  • Average weekly wage: $35,000 ÷ 13 = $2,692.31
  • Replacement rate: 70%
  • Calculated benefit: $2,692.31 × 0.70 = $1,884.62
  • 2026 maximum cap: $1,765
  • Weekly SDI benefit: $1,765 (capped at maximum)

Maximum earner example:

  • Highest quarter wages: $45,000 or more
  • Average weekly wage: $3,461+
  • Calculated benefit at 70%: $2,422+
  • Weekly SDI benefit: $1,765 (capped at maximum)

Step 4: The 7-Day Waiting Period

California SDI includes a mandatory seven-day waiting period at the beginning of each claim. You do not receive benefits for the first seven days of your disability — regardless of how long your disability lasts.

This waiting period affects the timing of your first payment, not the amount of your weekly benefit. If your disability lasts more than seven days, benefits begin from day eight and continue until you recover or reach the maximum benefit period.

For more on how the waiting period affects your first payment, read our guide on the SDI waiting period and your first payment.

Step 5: The Maximum Benefit Period

California SDI pays benefits for up to 52 weeks per claim period. The actual duration of your benefit depends on how long your licensed provider certifies that your condition prevents you from performing your regular work.

If your disability resolves before 52 weeks, your benefit period ends when your provider certifies your return-to-work date. If your condition is ongoing, benefits continue up to the 52-week maximum.

How This Compares to Unemployment

For people deciding between California SDI and unemployment, the payment difference is dramatic.

California unemployment pays a maximum of approximately $450 per week for up to 26 weeks. California SDI pays up to $1,765 per week for up to 52 weeks.

For most California workers, SDI pays three to four times more than unemployment — and for twice as long. If your mental health condition is preventing you from working or effectively searching for work, the financial case for SDI over unemployment is overwhelming.

Read our complete California SDI vs. unemployment guide to understand how the two programs compare and how to decide which one is right for your situation.

Why Your Actual Benefit Might Differ From Your Estimate

The base period lag. Because the standard base period excludes the most recently completed quarter, your benefit is calculated on wages that may be several months old. If you received a raise recently, your benefit will be lower than your current pay rate would suggest.

Variable income. If your earnings fluctuate significantly between quarters — common for commissioned workers, contractors, or people who changed jobs — the highest quarter calculation may not reflect your typical earnings.

Partial quarters. If you started a new job partway through a quarter, your wages for that partial quarter may be lower than a full quarter would produce, which can reduce your benefit.

SDI tax withholding. Only wages from which California SDI taxes were withheld count toward your base period and benefit calculation. Check your pay stubs for a deduction labeled “CA SDI” — if it’s there, those wages count. If an employer failed to withhold SDI taxes correctly, those wages won’t count toward your benefit.

The Minimum Benefit

California SDI has a minimum base period earnings requirement of $300 in SDI-withheld wages. If you meet that threshold but earned relatively little, your benefit will be a proportional percentage of the maximum — but some benefit is still available.

How to Estimate Your Benefit Before Filing

Step 1: Gather your pay stubs or W-2 forms for the relevant base period — the four calendar quarters before the most recently completed quarter.

Step 2: Identify which quarter had the highest total wages.

Step 3: Divide that quarter’s wages by 13 to get your average weekly wage.

Step 4: If your average weekly wage is below the California statewide AWW, multiply by 0.90. If above, multiply by 0.70. Cap the result at $1,765.

The California EDD also provides an online SDI benefit calculator at edd.ca.gov that gives you a precise estimate based on your actual earnings. For a walkthrough of how to use it, read our California SDI benefit calculator guide.

Are California SDI Payments Taxable?

California SDI benefits are not subject to California state income tax. However, they may be subject to federal income tax in certain circumstances — specifically if SDI is being paid as a substitute for unemployment insurance.

In most standard SDI claims for disability due to medical or mental health conditions, the benefits are not federally taxable. Tax situations vary by individual circumstance. For a full breakdown, read our guide on whether California SDI is taxable.

How Benefit Amounts Interact With Other Income

Employer-paid sick leave or short-term disability: If your employer provides paid sick leave or short-term disability insurance, these may run concurrently with SDI. California law does not allow you to receive more than your full pre-disability wages in combined benefits. If your employer’s benefits plus SDI would exceed your regular wages, one program will reduce accordingly.

Unemployment insurance: You cannot receive both SDI and unemployment simultaneously. The programs are mutually exclusive — SDI is for people who cannot work due to disability, unemployment is for people who can work and are actively seeking employment.

Workers’ compensation: SDI and workers’ compensation can sometimes overlap in complex situations. If you are receiving workers’ compensation benefits, SDI coordination rules apply.

Frequently Asked Questions

My employer gave me a raise recently — will my SDI benefit reflect my new salary? Only if the raise occurred during your base period. If the raise happened in the most recently completed quarter before your disability, it’s excluded from the standard base period and won’t affect your benefit amount.

I work multiple jobs. Do all my wages count? Yes — wages from multiple employers, all of which had California SDI deductions withheld, count toward your base period. Add together all SDI-withheld wages across all employers for each quarter.

I’m self-employed. Can I receive SDI benefits? Standard California SDI does not cover self-employed individuals. However, self-employed workers can elect to participate through a voluntary plan called DIEC (Disability Insurance Elective Coverage). For more detail, read our guide on SDI for self-employed Californians.

Can my benefit amount change during my claim? No. Once your claim is approved, your weekly benefit amount is fixed for the duration of that claim. It does not change if you receive a raise or your employment situation changes while you’re on SDI.

What if the EDD calculates my benefit incorrectly? You can dispute the EDD’s benefit calculation through their formal appeals process. If you believe your base period wages were miscalculated or wages were excluded that should have been included, contact the EDD and provide documentation of your actual earnings.

What is the statewide AWW used to determine my replacement rate? The California statewide average weekly wage is updated annually by the EDD. For 2026, refer to the EDD’s official website for the current figure. At SDI Advisor, we help clients understand exactly which rate applies to their situation during our free consultation.

How SDI Advisor Helps

Understanding how your benefit is calculated is one piece of the SDI process. Getting your claim filed correctly — with accurate earnings information, a complete medical certification, and consistent documentation — is what determines whether you receive those benefits at all.

At SDI Advisor, we’ve helped over 1,000 Californians navigate the SDI process since 2016. We handle every non-medical aspect of your claim — reviewing your eligibility, preparing your application, reviewing all documentation for consistency, and managing EDD communications through to approval — at no upfront cost.

We only get paid when we successfully secure your benefits.

If you have questions about your specific situation — including how your benefit would be calculated under the current 2026 rates — a free conversation with our team is the right first step.

Schedule your free consultation →

Or call us directly at 213-716-2364.

Disclaimer: SDI Advisor LLC provides information and assistance with the California State Disability Insurance (SDI) application process only. SDI Advisor LLC is not a medical or psychological practice and does not diagnose, treat, or provide medical or mental health opinions. Approval of an SDI claim is not guaranteed. Eligibility, benefit amounts, and tax treatment are determined by the State of California based on individual circumstances, including prior earnings. Not all applicants qualify, and not everyone receives the maximum weekly benefit.

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