When I entered CA 540-ES I paid on 2018 3 times, Turbotax popped 3 windows to ask "State ID", I do not find it on my 540-ES vouchers; what is it?

[TerryA · Accepted solution]

"State ID" = postal code. California's is CA

[chuinvisa]

Should the State ID is numbers instead of abbreviation?

[TerryA]

When state estimated tax payments are input into the program, the program needs to know which state it is for. So just entering $$ with no state ID is a no-no. States are not identified by numbers - it's the postal code.

If whatever you are trying to do requires numbers then that is not a "state ID" field. If so, please tell us exactly what the text says for that "state ID" field so we can find what it is you are referring to.

[chuinvisa]

Thanks very much.