while its true that NY gives credit for taxes paid in CT the computations for the credit are complicated and you may not get the NY credit for the full amount of tax paid to CT. however, there are other things to consider such as cost of living in one state while working in another. and other personal factors, salary ranges for the same type of work in both states.
there are 7 states that have no state income tax and two that only tax dividends interest and the like
However, it is still a question of what you are left with after paying all your expenses including taxes and personal factors, such as the weather.
there is a way to check. look at your tax liability for CT and compare it to the credit on the NY return form IT-112-R part 3 line 34. . if this is smaller than the CT tax you are not getting a credit for the full amount paid to CT,
