Or you can mail in an NY nonresident state income tax return and report $0 NY source income.
In order to get the full refund of your nonresident state income tax withholdings, you will need to file a nonresident return but report zero "0" income from the nonresident state. You must mail in this nonresident state income tax return and include your state W-2 information. You will want to include an explanatory statement with your return stating your situation (that live and work exclusively in NJ but your employer withheld NY state income taxes from your wages in error).
Otherwise, file an NY nonresident return reporting your income as NY sourced, then claim a tax credit for the NY taxes paid to NY on your NJ resident state income tax return.
