What Is SDI on Your Paystub? State Disability Insurance Explained
SDI funds state disability and paid family leave programmes in a handful of states. Who pays it, what it entitles you to and why the rate changes from year to year.
SDI on a pay stub is State Disability Insurance. Unlike federal taxes, it appears only if you work in one of the few states that runs such a programme, which is why employees moving between states often meet it for the first time on a new job.
Which States and Who Pays
A small group of states operates mandatory disability insurance: California, New York, New Jersey, Rhode Island and Hawaii, each with its own structure. In most of them the contribution is withheld from employee wages, though the split between employer and employee differs by state. Puerto Rico runs a comparable programme.
Everywhere else, disability cover is voluntary and provided through an employer policy, which appears on a stub as STD or LTD rather than SDI.
What It Buys
SDI pays partial wage replacement when a non-work-related illness or injury stops you working. Work-related injuries fall under workers' compensation, which is a separate system funded by employers. In several states the same contribution also funds paid family leave, covering time off to bond with a new child or care for a seriously ill relative.
That second part is frequently overlooked. Employees pay into it for years without realising they are entitled to paid leave when a family need arises.
Why the Rate Moves
States set the contribution rate and, where one applies, the taxable wage ceiling each year based on the fund's position. The rate can rise or fall, and some states have removed their wage cap entirely, which changes the calculation significantly for higher earners. Check the current figure rather than assuming last year's still applies.
I set out the state-by-state differences and current rate mechanics in my explainer on SDI for Online Paystub.
If You Need to Claim
Claims go to the state agency, not to your employer, though the employer usually supplies wage information. Apply promptly, because states impose filing deadlines measured from the date disability began, and a late claim can forfeit benefits you have already paid for.