How Much Is State Disability Insurance? 
The State Disability Insurance -LRB- SDI -RRB- withholding rate is 1 % of annual income , up to an annual income of $ 100,800 . Therefore the most that can be paid for SDI in 2013 is $ 1,008.80 for someone who is making over that amount . There is also a lid on benefits . The cost of SDI is considered a tax and , as such , is tax deductible . 