PA and NJ have tax reciprocity with regard to W-2 wages. If you lived in NJ the entire tax year, and worked in PA, your W-2 wages are not subject to PA taxes. For tax purposes, your PA wages are considered NJ income, and are fully taxable by NJ. If this is your situation, you would answer No in the Personal Info section of TT to the question about having Other State Income.
The only reason you'd have to file a non-resident PA return is if your employer mistakenly withheld PA taxes, or if you had PA income other than W-2 wages, such as rental income from a property located in PA. PA-NJ reciprocity applies only to W-2 wages, not to any other type of income.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
