Supplemental Security Income (SSI)

Who's eligible

Adults age 18 or older with a qualifying disability and very limited income and assets. Children under 18 with a qualifying disability whose family meets the income limits can also receive SSI; this page focuses on adult SSI because that is the version most San Diego SLS families navigate. At 18, the income and asset rules apply only to your loved one — not the parents — even if your loved one still lives at home. Many adults who did not qualify as children qualify the month they turn 18. The federal asset limit is $2,000 for an individual. The ABLE account program allows people with disabilities to save above that limit for disability-related expenses without losing eligibility.

What it pays for

Monthly cash benefit, paid directly to the recipient or to a representative payee
Automatic Medi-Cal eligibility in California — receiving SSI in California means Medi-Cal coverage is continuous
Counted as income for housing-voucher rent calculations

How to apply

Apply through the Social Security Administration (SSA). Online application is the easiest path; phone applications and in-person appointments at the San Diego SSA offices are also available.
Submit medical documentation - psychological evaluations, IEP records, medical records, and any other evidence of the qualifying disability. The more documentation, the smoother the process.
SSA may schedule a Consultative Examination if more medical evidence is needed.
SSA reviews and issues a decision. The first decision can take three to six months.
If approved, benefits begin the month after approval and may include retroactive payments to the application date.
Set up direct deposit and a representative payee if applicable.

Negotiating

The application is part-medical, part-financial. Strong medical documentation up front shortens the process and reduces denial risk. Get psychological evaluations done before applying if they are not already current.
For young adults, apply the month they turn 18, not later. Backdating is limited and the months between 18 and approval are months without income.
If your loved one has worked, look at the SSI vs. SSDI question. For some young adults who never worked, SSI is the only option; for adults who worked or whose parent is retired/deceased, Childhood Disability Benefits (CDB) may apply and be more generous.

If you're denied

SSI denials are common at the first stage and frequently reversed on appeal. Do not stop at the first denial.
The appeal stages are - reconsideration, administrative law judge hearing, Appeals Council, federal court. Most successful appeals come at the administrative law judge stage.
Disability Rights California, Legal Aid Society of San Diego, and private disability attorneys all handle SSI appeals. Many take cases on contingency - they only get paid if you win.
The deadline to appeal each stage is 60 days from the denial notice. Mark the calendar.

Supplemental Security Income (SSI) is the federal program that pays a monthly cash benefit to adults with qualifying disabilities and very limited income and assets. For most San Diego SLS families, SSI is the financial floor — the income that pays the rent, the food, the bus pass, the clothes, the small daily life. Everything else in this guide — the housing voucher, the staff support, the day program — is built on top of the steady monthly check that SSI provides.

Why SSI is so important

Three reasons:

It pays the rent. The 2026 federal SSI rate plus the California state supplement is roughly $1,200 a month — enough to cover the tenant share of a Section 8 voucher in San Diego, with help from the voucher.
It triggers automatic Medi-Cal in California. Receiving SSI means Medi-Cal coverage is continuous. That is the bedrock for healthcare.
It is the proof of disability that other programs and landlords often want to see.

Apply at 18

For young adults, the most important advice in this whole page: apply for SSI the month your loved one turns 18. Not later. Apply on the eighteenth-birthday day or in the days right after.

At 18, the income and asset rules apply only to your loved one, not to the parents. Most adults with developmental disabilities who did not qualify as children qualify the month they turn 18. Backdating is limited; the months between 18 and approval are months without income. Apply early.

SSI vs. SSDI

SSI and Social Security Disability Insurance (SSDI) are easy to confuse but quite different.

SSI is means-tested. You qualify based on disability and limited income/assets. The benefit amount is set by federal rules plus state supplement.
SSDI is work-history based. The recipient (or, for adults disabled before age 22, the parent) must have a work history that paid into Social Security. Childhood Disability Benefits (CDB) is the SSDI subtype most relevant to adults disabled before age 22 — the benefit is based on the parent’s work record and is often higher than SSI.

Many adults with developmental disabilities receive both SSI and CDB. The Social Security Administration handles this in their internal calculation; the result is a combined benefit. Ask explicitly about CDB if a parent is retired, deceased, or disabled.

ABLE accounts

For decades, the SSI $2,000 asset limit made it impossible for adults with disabilities to save money. The ABLE Act, passed in 2014, created tax-advantaged savings accounts for people with disabilities. CalABLE is California’s program.

ABLE accounts let your loved one save up to $19,000 a year (2026 limit) for disability-related expenses without losing SSI or Medi-Cal eligibility. Money in the account does not count against the $2,000 asset limit. This is a quietly transformative tool that most San Diego families do not use enough.

Common pitfalls

Going over the $2,000 asset limit. A single month over can suspend benefits. Use a CalABLE account.
Not reporting changes promptly. SSA requires reporting of income, address, and living-arrangement changes. Late reporting can produce overpayment notices.
Forgetting to set up a representative payee when one is needed. If your loved one cannot manage the funds themselves, a parent or other trusted person should be set up as the rep payee.
Assuming the first denial is final. Many initial denials are reversed on appeal. The 60-day appeal deadline is firm.

What if a denial happens

Do not stop at the first denial. The reconsideration stage and the administrative law judge hearing stage both have meaningful approval rates with good documentation. Free legal help is available through Disability Rights California, Legal Aid Society of San Diego, and several disability law clinics.