California Residency Status - Work & Study Overseas?

[hydeciel89]

I am a green card holder since 2008. I used to study in California from 2005 - 2011, and worked from 2011. 

Then I moved to my country of citizenship in Feb 2016 and worked from May 2016 - Sep 2016 (unemployed between March - April 2016). 

Afterwards, I moved to the UK to study for one year from Sep 2016 - Sep 2017, moved back to my country of citizenship and started working there from Jan 2018 until today (unemployed from Oct 2017 - Dec 2017). 

In 2018, my source of income is only from my job in this foreign country. 

I still maintain my bank accounts, driver's license and a vehicle in California up until today. I went back to California 2 times in 2018: February (9 days), August (11 days) to visit my family.

How should I determine my California residency status in this case for 2018? 

Thank you.

[CarolynM]

You are not a California resident, or even a US resident, in 2018.

You did not live here long enough to reestablish residency in 2018. Residency is more than a bank account and driver's license.

Unless you have income from your US bank accounts, I find no reason based on the details in your question that you would need to file a US or California tax return.

If you do have interest income, you will need to file a federal tax return, but not a state tax return.