What is your resident state? Generally, your resident state will provide a credit for taxes paid to another state on the same income that is taxed by both states. In other words, while two jurisdictions may impose a tax on your income, because of the resident tax credit, your total tax should be no more that what your resident state would impose. It is not clear why your tax due for New Jersey and Connecticut would increase after you removed income sourced to those states.
@Mgconslts
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