As stated earlier, NY tax law is that, unless you are working remotely as a requirement of your NY employer, and you are assigned to or working from a bona fide PA office of your employer, your remote work income is also taxable by NY.
https://www.tax.ny.gov/pdf/memos/income/m06_5i.pdf
So, unless your remote work meets that exception, you must file a non-resident NY tax return in addition to your home state PA tax return, and thus your incomes is reportable to both states. PA will allow you to claim at least a partial credit for the tax you pay to NY on the income taxed by both states. Remember to complete the non-resident NY return first, before you do your home state PA return, so that the program can calculate and apply the credit correctly.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
