Line 15 – Casualty or Theft Loss(es)
Under federal law, the personal casualty and theft loss deduction is suspended, with exception for personal casualty gains. Federal law allows a deduction for personal casualty and theft loss incurred in a federally declared disaster. California law does not conform.
California allows personal casualty and theft loss and disaster loss deductions. If you have personal casualty and theft loss and/or disaster loss, complete another federal Form 4684, Casualties and Thefts, using California amounts. Enter the difference between the federal and California amount in column B or column C.