I work for a NY company remotely from NC. I worked 1 day on site in 2017, and signed a payroll form to that effect. They used it to calculate how much NY tax for 1 day of wages to deduct. I had NC state taxes deducted all year. When the 2017 W-2 came in, my full salary is showing in BOTH the NC earnings box AND the NY earnings box. I am filing joint with my spouse who lived/worked only in NC. My employer insists this is how they prorate - they prorate the tax to be deducted only, and not the earnings. Is there any way to allocate only my 1 day of wage while working in NY to NY without getting a corrected W-2? (which my employer will not do).
