I had my primary residence in California until 2010. I got a Federal Government Job and moved to Maryland. I am a co-owner of a home in Maryland with my son. I am currently registered my vehicles and registered to vote in Maryland. My current driver's license is of Maryland. Generally, this are the questions used to establish residency.
However, I am retired now and planning to move in CA but want to keep my Maryland home as my secondary home. My question is which state I should have my primary residence for tax benefit purpose?
