The taxability of disability benefits depends on the source of the payments. Social Security Disability Insurance (SSDI) benefits follow the same rules as regular Social Security retirement benefits — up to 85% may be taxable depending on your total income, but many people with SSDI as their primary income pay little or no tax. Supplemental Security Income (SSI) is always tax-free. For employer-provided disability benefits: if your employer paid the premiums for short-term or long-term disability insurance, the benefits you receive are fully taxable as ordinary income; if you paid the premiums with after-tax dollars, the benefits are tax-free. If you and your employer both paid premiums, the benefits are partially taxable based on the proportion the employer paid. Workers' compensation for job-related illness or injury is generally tax-free. Veterans' disability benefits from the Department of Veterans Affairs are completely tax-free. The key question is always who paid for the coverage — employer-paid premiums create taxable benefits, while employee-paid after-tax premiums create tax-free benefits.