Active duty military till 07/2018. Active Duty military don't pay PA state taxes, but how do I file for the remaining months of the year? Do I still owe PA state taxes?

[DanielV01]

It depends if you moved back to PA.  If after you left the service you returned to PA, you will pay PA tax on your remaining income for the year.  If, however, you left the military and took up residency in a new state, you have become a resident of that state and file a part-year resident return with that state.  Pennsylvania does not tax any income you earned if you have in essence moved from PA.