I need to adjust my CA State income tax withholding from an already filed 2016

[MaryK1 · Accepted solution]

If you entered an incorrect amount or forgot to add estimated taxes or other taxes withheld, the California Franchise Board can make the mathematical correction for you and send you the correct amount- just check your tax due or refund to make sure the correct adjustment was made.  If it was not, you can call the California Franchise Board at (800) 852-5711.