I understand this, but the gross income that NJ calculates is incorrect. It sums my total state W2 wages. Since I am an MA resident, my MA W2 already totals income I have earned in all states. So summing MA + the other states' incomes is double counting income. My wages earned in NJ are correct, but the tax rate is calculated on the gross income, not the wages earned in NJ. Since my gross income is higher, my taxes owed on the amount earned in NJ are higher and this is incorrect.
Where can I adjust the NJ gross income amount?
