State tax withheld is in box 12. Any box 12 tax withheld will appear as a state tax credit on the CA 540 form. As long as there is only one state in box 12 then box 14 by default is understood the be the same amount as box 1 so financial institution always leave box 14 blank. Only if box 12 & 13 had two different states would the put the amount of the box 1 distribution allocated to each state in box 14.
(There is at least one state - NY - that complains about a blank box 14 so in that case just make box 14 the same as box 1)
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
