Moved from CA to WA, continuing to telework for CA-based employer

Hi all - I work for a software company that is based in California and my physical office location is still listed by the company as California. That being said, my family and I moved permanently from CA on 6/26/20 and arrived permanently in WA state on 6/27/20, with the intention to continue working remotely. This was not a temporary COVID move and we plan to stay in WA indefinitely. Although my remote work is with the permission with my supervisor, my employment contract does not specifically stipulate that my job is remote.

 

My employer has record of my change of home address to WA state as of 6/28/20 (even though my physical office location hasn't been changed) and I have a lease document for my new home in WA state as of 7/1/20. I also have a WA state driver's license issued in August. Despite the fact that the company hasn't changed my office location and has continued to withhold CA state taxes all year, I have both resided and performed my work remotely from WA state since 6/27/20. I have not set foot back in CA since that time.

 

Am I entitled to recover my CA state taxes paid since my move to WA? If so, can I claim them as of 6/27/20 when I arrived in WA, or does it have to be based on the date of issuance of certain forms of documentation?

 

Thanks for any guidance.