CA non-resident living in NJ for CA firm

[jandminindy]

Have worked remotely throughout 2021 from home office in NJ for CA based company.  Spent <30-days in CA on-site.  No CA tax witholding by my employer.  CA schedule S makes it sound as though CA state income tax form is still required to be filed.  Is it?

[Vanessa A]

Yes, since you physically worked in CA, even though it was for less than 30 days, you will still need to file a CA nonresident return for the days you were physically present in CA.