My son is a PA resident. He worked in IN for a couple of months of 2016, and then worked in WI for the rest of the year. His employer took out state taxes for IN and WI, but it appears that nothing was taken out for PA, and he will have to pay quite a bit. How should I do his State taxes to be sure the amounts are correct? He was sent to Italy at the beginning of 2017 and will not be back until July. Would it be wise to file extensions for federal and state until he returns?
