No, California does not tax Social Security benefits. The exemption is complete and applies to retirement, survivor, and disability payments, no matter how much other income you have. The catch is that the federal government still taxes a portion of those benefits for many retirees, and California taxes almost every other kind of retirement income at ordinary rates that reach as high as 13.3%.
What the California Exemption Covers
The Franchise Tax Board states plainly that California does not tax Social Security income from the United States, including survivor’s and disability benefits.1California Franchise Tax Board. Special Circumstances – Section: Social Security There is no income cap on the exemption. A retiree collecting $40,000 a year in Social Security and earning $500,000 from investments pays zero California tax on the Social Security portion.
You do not need to make any special calculation or adjustment on Form 540. The Social Security amount reported on your federal Form SSA-1099 simply does not carry over to the state return.
Part-Year Residents and Nonresidents
If you moved into or out of California during the year, the exemption still protects your benefits in full. California taxes a part-year resident’s worldwide income earned while living in the state and any California-source income earned while living elsewhere.2Franchise Tax Board. Part-Year Resident and Nonresident Social Security benefits are federal payments, not California-source income, so they stay exempt regardless of residency status.
Railroad Retirement
Railroad retirees get similar treatment. California does not tax Tier 1 or Tier 2 railroad retirement benefits paid by the Railroad Retirement Board and reported on federal Form RRB-1099-R.3Franchise Tax Board. Pension and Annuity Guidelines Supplemental benefits paid directly by individual railroads are a different story: they appear on a standard Form 1099-R and are taxed by California as ordinary pension income.
Federal Tax Still Applies to Your Benefits
The state exemption sometimes leads retirees to assume Social Security is entirely tax-free. It is not. The IRS taxes a portion of benefits once your total income crosses certain thresholds, and those thresholds are lower than most people expect.
The IRS uses a figure called “combined income” (also called provisional income) to decide how much of your benefits are taxable. You calculate it by adding half of your annual Social Security benefit to all your other income, including pensions, wages, investment income, and tax-exempt interest.4Internal Revenue Service. Social Security Income
The thresholds that trigger federal tax on your benefits are:
- Single filers: combined income between $25,000 and $34,000 means up to 50% of benefits are taxable; above $34,000, up to 85% are taxable.
- Married filing jointly: combined income between $32,000 and $44,000 means up to 50% of benefits are taxable; above $44,000, up to 85% are taxable.
- Married filing separately while living with your spouse: up to 85% of benefits are taxable starting from the first dollar of combined income.
These thresholds are set in the federal tax code and have never been adjusted for inflation since Congress established them.5Office of the Law Revision Counsel. 26 USC 86 – Social Security and Tier 1 Railroad Retirement Benefits They were the same in 1994 as they are in 2026. Because wages and benefits have risen while the thresholds stayed flat, a growing share of retirees now owe federal tax on their benefits even with modest incomes.
Whatever portion the IRS taxes on your federal Form 1040 is still ignored on your California return. Owing federal tax on your Social Security creates no state tax obligation.1California Franchise Tax Board. Special Circumstances – Section: Social Security
Other Retirement Income California Does Tax
Social Security’s full exemption is the exception, not the rule. Nearly every other common retirement income stream is taxable in California at ordinary income tax rates.
Pensions, 401(k)s, and Traditional IRAs
Distributions from traditional 401(k) plans, traditional IRAs, and pension plans all count as ordinary income on your California return.6Franchise Tax Board. Early Distributions This applies whether the pension comes from a private employer, a government entity, or a union plan. The income flows through your federal return on Form 1099-R and carries over to the state return with no exclusion.
California’s progressive income tax tops out at 12.3%, with an additional 1% Mental Health Services Act surcharge on taxable income above $1 million, pushing the effective top rate to 13.3%.7Behavioral Health Services Oversight and Accountability Commission. The Act: MHSA Most retirees will not approach the top, but middle-income retirees drawing from both a pension and a 401(k) can land in the 9.3% bracket fairly quickly.
Roth IRAs
Qualified Roth IRA distributions are excluded from gross income for both federal and California purposes.8Franchise Tax Board. Legal Ruling 1998-4 To qualify, the account must have been open at least five years, and the distribution must occur after age 59½, upon disability, or for a first-time home purchase. For retirees who built up Roth balances during their working years, this is one of the cleanest sources of tax-free income available in the state.
Health Savings Accounts
California diverges from federal law on Health Savings Accounts in a way that catches people off guard. Contributions that are deductible on your federal return are not deductible for California, and the interest or investment gains inside the account are taxable by California each year. Withdrawals used for medical expenses are federally tax-free, but California treats those distributions as taxable to the extent they include previously untaxed contributions or earnings. Pending legislation (AB 781) would align California with federal HSA rules starting in 2026, but as of early 2026 the bill had not been enacted.9Franchise Tax Board. Bill Analysis, AB 781 – Health Savings Account Deduction Conformity
Do You Even Need to File in California?
Because Social Security is excluded from California income, some retirees whose only income is Social Security may not need to file a state return at all. California sets higher filing thresholds for taxpayers age 65 and older. For the 2025 tax year (filed in 2026), a single person age 65 or older with no dependents does not need to file unless their California gross income exceeds $30,591 or California adjusted gross income exceeds $26,003.10Franchise Tax Board. Residents
For a married couple filing jointly where both spouses are 65 or older and have no dependents, the gross income threshold is $61,187 and the adjusted gross income threshold is $52,011.10Franchise Tax Board. Residents Social Security does not count toward these thresholds. A couple collecting $50,000 in Social Security plus $20,000 from a small pension is well under the filing threshold, because only the pension counts.
Planning Around the Exemption
Knowing Social Security is exempt is the easy part. The real planning opportunity sits with the income California does tax.
- Sequence your withdrawals. Drawing from Roth accounts in years when pension or 401(k) income would push you into the 9.3% bracket or higher can keep your state tax bill down. Social Security does not affect your California bracket at all, which gives you more room than retirees in states that tax those benefits.
- Watch your federal combined income. Even though California ignores Social Security, the IRS does not. Selling investments, taking a large IRA distribution, or receiving a lump-sum pension payment can push you above the $34,000 single or $44,000 joint thresholds and trigger federal tax on up to 85% of your benefits.11Internal Revenue Service. IRS Reminds Taxpayers Their Social Security Benefits May Be Taxable
- Consider Roth conversions before retirement. A conversion triggers California income tax in the year you make it, but future qualified withdrawals are tax-free at both the federal and state level. Converting during a low-income year is often the most efficient time.
- Track HSA activity separately. Until California conforms to federal HSA rules, keep records of your contributions and earnings for state purposes. If AB 781 or similar legislation passes, prior nonconformity years are unlikely to be fixed retroactively.