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PA HB561 passed in February, 2016 indicates active duty military pay is not taxable even if earned inside PA, however, does not appear software is updated with this info. Link to bill https://legiscan.com/PA/text/HB561/2015
The bill that you cited only applies to a change in the definition of earned income for PA LOCAL TAXES ONLY. It does not apply to PA state income tax.
Thus military pay earned by PA residents on active duty stationed outside the state is not taxable by PA
Military pay earned by PA residents on active duty inside the state is taxable by PA.
With this bill, military pay earned on active duty is not subject to PA local earned income taxes, regardless if earned inside or outside the state of PA.
See this page from one of the authorized local earned income tax collection agents:
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