Q. How will my taxes work each year?
A. You federal tax doesn't change. You use the address you want the IRS to communicate with you at. For state taxes, the normal rule, is that you would no longer be subject to state tax at you employer's location. But, Pennsylvania does things differently.
If you work outside the state as a job requirement, you are only subject to Pennsylvania State income tax on the days you work in PA. But if you work outside PA for your own convenience (as in your case), you are subject to PA State income tax on all your income. New York, Nebraska, Delaware and Arkansas have the same rule.
PA rule https://www.revenue.pa.gov/FormsandPublications/PAPersonalIncomeTaxGuide/Pages/Gross-Compensation.as...
PA during Covid https://www.revenue.pa.gov/COVID19/Telework/Pages/Telework-During-COVID19.aspx
