California does not tax State Disability Insurance (SDI) benefits, but federal taxes may still explore

State Disability Insurance (SDI) payments from California are not subject to California state income tax. However, the federal government may tax these benefits depending on your total income for the year. This means you could owe federal taxes on SDI even though California leaves it alone.

The key difference: California treats SDI as non-taxable income at the state level, but the IRS has its own rules. If your combined income (including SDI, wages, and other sources) exceeds certain thresholds, up to 85% of your SDI benefits can be counted as taxable income on your federal return.

Understanding which tax applies to you requires knowing your total household income and filing status. A single filer with combined income over $25,000 may owe federal tax on SDI. A married couple filing jointly with combined income over $32,000 faces the same possibility. These thresholds have not changed since 1984.

Key Takeaways

  • California State Disability Insurance is exempt from California state income tax, so you will not owe state tax on these payments.
  • The federal government may tax SDI benefits if your total income (SDI plus wages, interest, and other sources) exceeds $25,000 for single filers or $32,000 for married couples filing jointly.
  • Up to 85% of your SDI can become taxable income for federal purposes if you cross the income threshold for your filing status.
  • You should report SDI on your federal tax return even if you do not owe tax, because the IRS uses this information to calculate whether any portion is taxable.

How the federal tax calculation works for SDI

The IRS uses a two-step process to determine whether your SDI is taxable at the federal level. First, it adds up your "combined income," which includes your SDI payments, wages, self-employment income, interest, dividends, and certain other sources. It does not include some types of income like municipal bond interest.

Second, it compares your combined income to a base amount. For single filers, the base is $25,000. For married couples filing jointly, it is $32,000. For married people filing separately, it is $0 — meaning any SDI at all can trigger federal tax if you file separately.

If your combined income exceeds the base amount, the IRS taxes the lesser of two amounts: either 50% of the excess over the base, or 50% of your SDI benefits. If your combined income exceeds the base by more than $9,000 (single) or $12,000 (married filing jointly), an additional 85% of the excess can be taxed, up to a maximum of 85% of total SDI.

Example: A single person receives $12,000 in SDI and has $2,000 in wages, for combined income of $14,000. This is below the $25,000 threshold, so no federal tax is owed on the SDI. If the same person had $28,000 in combined income, the excess over $25,000 is $3,000. The taxable amount would be the lesser of $1,500 (50% of $3,000) or $6,000 (50% of $12,000 SDI), which is $1,500.

What to report on your federal tax return

SDI benefits are reported on IRS Form 1040 (the main federal income tax form) on line 5b, labeled "Taxable social security benefits." Despite the label, this line is where you report SDI as well as Social Security benefits. You will also receive a Form SSA-1099 from the California Department of Employment Development (EDD) showing the total SDI you received during the tax year.

Even if you determine that none of your SDI is taxable, you should still report it on your return. The IRS cross-checks the Form SSA-1099 against your return, and reporting the full amount prevents delays or notices. If you do not report SDI that appears on a Form SSA-1099, the IRS will likely send you a notice asking for an explanation.

You can use IRS Worksheet 1 (found in the instructions for Form 1040) or IRS Publication 915 to calculate the taxable portion yourself. Many tax software programs also calculate this automatically once you enter your SDI amount and other income sources.

When you might owe estimated taxes on SDI

If a portion of your SDI is taxable and you do not have taxes withheld from your benefits, you may need to make quarterly estimated tax payments to the IRS. This applies if you expect to owe $1,000 or more in federal tax for the year.

SDI payments do not have automatic tax withholding the way paychecks do. If you know you will owe federal tax on your SDI, you can request that the EDD withhold a percentage of your benefit payment. You do this by completing Form DE 888 (Withholding Election for Disability Insurance Benefits) and submitting it to the EDD.

Alternatively, you can make quarterly estimated payments directly to the IRS using Form 1040-ES. Estimated payments are due on April 15, June 15, September 15, and January 15 of the following year. If you miss a payment or underpay, you may owe a penalty when you file your return, even if you ultimately do not owe tax.

State taxes on SDI: California's treatment

California explicitly excludes SDI from taxable income under California Revenue and Taxation Code Section 17201. This means the state does not tax these benefits at all, regardless of your income level or filing status. You do not need to report SDI separately on your California return (Form 540) — it is straightforward not part of your California taxable income.

This is different from Social Security benefits, which California also does not tax. Some states do tax Social Security or disability benefits, but California is not one of them. If you moved to California from another state or plan to move away, check the tax rules of the other state, because they may differ.

Frequently Asked Questions

Do I have to pay federal tax on all of my SDI, or just part of it?

Only part of it, and only if your combined income exceeds the threshold for your filing status. The maximum taxable portion is 85% of your SDI benefits. Many people with SDI below the income threshold owe no federal tax on it at all.

What counts as "combined income" for the SDI tax calculation?

Combined income includes your SDI, wages, self-employment income, interest, dividends, capital gains, rental income, and certain other sources. It does not include municipal bond interest or some other types of income. Your Form SSA-1099 and other tax documents will show these amounts.

If I withhold taxes from my SDI, will that cover what I owe?

It depends on your total income and tax situation. Withholding is one way to pay federal tax throughout the year instead of owing a large amount at tax time. You can adjust the withholding percentage on Form DE 888 if you find you are withholding too much or too little.

What happens if I do not report my SDI on my federal return?

The IRS will receive a copy of your Form SSA-1099 from the EDD and will likely send you a notice if your return does not match. It is simpler to report the SDI upfront, even if none of it is taxable, to avoid delays or correspondence with the IRS.

Can I deduct medical expenses or other costs from my SDI for tax purposes?

No. SDI is not reduced by medical expenses, work-related costs, or other deductions before it is taxed. You report the full SDI amount on your return. You may be able to deduct certain medical expenses separately on Schedule A if you itemize deductions, but this is unrelated to your SDI.