The monthly amount depends on your work history, not your condition

California's disability programs pay based on how much you earned before you stopped working, not on which medical condition you have. Social Security Disability Insurance (SSDI) uses your average earnings over your career. State Disability Insurance (SDI), California's temporary program, uses your wages in the past 12 months. Neither program has a fixed payment for a particular diagnosis.

The Social Security Administration calculates your SSDI payment by looking at your 35 highest-earning years (or fewer if you haven't worked that long), adjusting them for inflation, and converting that to a monthly benefit. The result ranges widely—some people receive a few hundred dollars monthly, others over $3,000. SDI payments are typically smaller and last only up to one year, since SDI covers temporary disabilities while you recover.

Your actual payment amount is determined by a formula, not by a caseworker's judgment. Once Social Security approves you, they send you a notice showing exactly what you will receive each month. That amount can change only if your earnings record is corrected, if you reach full retirement age (when SSDI converts to retirement benefits at the same rate), or if you return to work and earn above the limit.

Key Takeaways

  • SSDI payments are based on your lifetime work history and average earnings, so two people with the same condition may receive very different amounts.
  • California's SDI is a temporary program that pays for up to one year and uses only your recent wages, making payments smaller than SSDI.
  • The Social Security Administration calculates your exact monthly amount using a formula and sends you a notice showing what you will receive.
  • Your payment does not change based on your medical condition or how severe your disability is, only on your work history and age.
  • If you work while receiving SSDI, your benefits reduce or stop if you earn above $1,550 per month (the amount changes yearly).

How Social Security calculates your SSDI amount

Social Security starts by finding your Primary Insurance Amount (PIA), which is the base monthly payment you would receive at full retirement age. They take your 35 highest-earning years, adjust each year's earnings for inflation using a national wage index, add them together, and divide by 420 (the number of months in 35 years). That average is then run through a formula with bend points—thresholds that determine what percentage of your average earnings you receive.

The bend points change every year. For 2024, the formula roughly gives you 90 percent of your first $1,174 in average monthly earnings, then 32 percent of earnings between $1,174 and $7,078, then 15 percent of anything above that. This means lower earners get a higher percentage of their income replaced, while higher earners get a lower percentage. A person who averaged $2,000 monthly receives a larger percentage of their earnings than someone who averaged $8,000 monthly.

If you became disabled before age 22 and never worked substantially, you may receive benefits as a disabled adult child on a parent's or grandparent's work record instead. That payment is typically 75 percent of the parent's PIA. If you are already receiving retirement or survivor benefits, you cannot also receive SSDI—Social Security pays whichever is higher.

What California's SDI pays and how long it lasts

State Disability Insurance is a temporary program run by California's Employment Development Department (EDD). It covers workers who cannot work due to a non-work-related illness or injury. SDI payments are based on your wages in the past 12 months and typically replace about 60 to 70 percent of your regular pay, up to a maximum weekly amount that changes yearly. For 2024, the maximum is around $1,540 per week, though your actual payment depends on what you earned.

SDI lasts up to 52 weeks (one year) for most disabilities. If you are pregnant or have a pregnancy-related condition, you may receive benefits for up to four weeks before your due date and up to six weeks after delivery, totaling up to 16 weeks. You must file your SDI claim within 49 days of the date you stopped working, though filing sooner is better because benefits do not start until you have been unable to work for at least seven days.

SDI is not the same as SSDI. SDI is temporary and assumes you will return to work. SSDI is permanent (or long-term) and is for people whose disabilities are expected to last at least 12 months or result in death. Many people receive SDI first while waiting for an SSDI decision, since SDI has a faster approval process and does not require proof that your condition meets Social Security's strict definition of disability.

How work affects your SSDI payment

If you work while receiving SSDI, your benefits will reduce or stop depending on how much you earn. Social Security allows you to earn up to a certain amount each month without losing benefits—for 2024, that amount is $1,550. If you earn more than that, Social Security subtracts $1 in benefits for every $2 you earn above the limit. This is called the Substantial Gainful Activity (SGA) limit.

There is also a nine-month trial work period during which you can earn any amount without losing SSDI benefits. After the trial work period ends, the SGA limit applies. If you return to work and your earnings stay below SGA for nine months (not necessarily consecutive), you have used your trial work period. After that, you enter the extended may be able to access period, where you can still work and earn above SGA for up to 36 months, but your benefits will reduce or stop based on your earnings.

If your earnings drop back below SGA later, your benefits restart without a new process. This structure is designed to let you test your ability to work without when ready losing all support. Many people use the trial work period to see whether they can handle a job before committing to full-time work.

Supplemental Security Income (SSI) in California

If you do not have enough work history to receive SSDI, you may be able to receive Supplemental Security Income (SSI) instead. SSI is a needs-based program, meaning your payment depends on your income and assets, not on your work history. California adds a state supplement to the federal SSI payment, making California's total SSI amount higher than in most other states.

For 2024, the federal SSI payment is $943 monthly for an individual, but California adds approximately $70 more, bringing the total to around $1,013. However, if you have income from other sources—including part-time work, unemployment benefits, or help from family members—your SSI payment reduces dollar-for-dollar. If you own assets worth more than $2,000 (or $3,000 if you are married), you do not may have access to for SSI.

SSI also covers people under age 18 whose parents' income and assets are low enough, and it covers blind and visually impaired people of any age. Unlike SSDI, SSI does not require that your disability last 12 months—it can be shorter. However, the income and asset limits make SSI available only to people with very limited resources.

Medicare and Medicaid coverage with disability benefits

When you receive SSDI, you become covered by Medicare after 24 months of receiving benefits. Medicare is federal health insurance and includes hospital coverage (Part A), doctor visits (Part B), and optional prescription drug coverage (Part D). You pay a monthly premium for Part B and Part D, though the premium is deducted from your SSDI check.

If you receive SSI, you are automatically covered by Medi-Cal, California's Medicaid program. Medi-Cal covers doctor visits, hospital stays, prescriptions, and mental health services at no cost to you. Unlike Medicare, Medi-Cal does not have premiums or deductibles. If you receive both SSDI and SSI (which is possible if your SSDI payment is very low), you receive both Medicare and Medi-Cal.

Your health coverage continues even if you return to work, as long as you remain disabled according to Social Security's definition. During the trial work period, your Medicare or Medi-Cal stays in place. After the trial work period, if your earnings cause your SSDI to stop, you can continue buying Medicare for up to 93 months (about 7.5 years) by paying the full premium yourself.

Cost of living and payment increases

SSDI and SSI payments increase once per year based on the Cost of Living Adjustment (COLA). The COLA is tied to inflation and is announced in October for the following year. In recent years, COLA increases have ranged from less than 1 percent to over 8 percent, depending on inflation. Your payment automatically increases by the COLA percentage each January—you do not need to do anything.

SDI payments do not receive a COLA increase because the program is temporary. However, the maximum weekly benefit amount for SDI is adjusted each year based on changes in California's average weekly wage. If you are still receiving SDI the following year, your maximum benefit may be higher, though your actual payment still depends on your own wages.

If you believe your payment is incorrect, you can contact Social Security (for SSDI) or the EDD (for SDI) to ask for a recalculation. Errors sometimes occur if your work record was not entered correctly or if a recent year of earnings was not yet posted to your account. Requesting a correction can take several months, but it may result in back pay if the error is found.

Frequently Asked Questions

Can I receive both SSDI and SDI at the same time?

No. If you are receiving SDI and then become approved for SSDI, your SDI stops and SSDI begins. However, you can receive SDI while waiting for an SSDI decision, since SDI approval is faster. Once SSDI is approved, it usually pays more and lasts longer.

What happens to my payment if I get married or have a child?

Your own SSDI payment does not change if you marry or have a child. However, your spouse and children may be able to receive benefits on your work record—typically 50 percent of your PIA for a spouse at full retirement age, and 75 percent for each child under 19 (or 19 if still in high school). These family payments do not reduce your own benefit.

How much will I receive if I have not worked much?

If you have limited work history, your SSDI payment will be lower because it is based on your average earnings. You may receive only a few hundred dollars monthly. If you do not have enough work credits, you may not may have access to for SSDI at all and would need to explore SSI instead, which is based on financial need rather than work history.

Does my payment change if my condition gets worse?

No. Once you are approved for SSDI, your monthly payment is set based on your work history and does not change if your condition worsens or improves. Social Security may review your case periodically to confirm you still meet the disability definition, but a worsening condition does not increase your payment amount.

What if I disagree with the payment amount Social Security calculated?

You can request that Social Security review your work record to make sure all your earnings were recorded correctly. Errors sometimes happen, especially with older records or name changes. Contact your local Social Security office or call 1-800-772-1213 to ask for a detailed earnings statement and request a recalculation if you believe an error exists.