Lived in both PA and MA for 6 months each

Here is my situation - 

  • I lived in PA and worked for a PA employer up until May 11,2020. (PA state taxes withheld on W2).
  • I started working for a company in MA while still living in PA from May 11,2020 to June 30, 2020. (MA state taxes withheld on W2 and local taxes for PA withheld as well but no PA state taxes withheld).
  • I then moved to MA on July 1, 2020 permanently.  (MA taxes withheld on W2).

 

My questions are:

 

1. Do I file a part year resident(July to Dec) as well as a non-resident(May 11 to June 30) tax form for MA. 

2. Do I need to file taxes in PA for the 50 day period (May 11 to June 30) I stayed there but worked for a MA employer?

3. Which state do I pay tax to based on the interest income I earned in 2020?

 

Thank you!