@kgn02 I don't normally respond to CT. Seems CT does NOT tax income from working out of state unless that other state does. There is a convenience of employer ruling..
@ErnieS0 is normally correct Wages of a nonresident are not subject to Connecticut income tax withholding if the wages are paid for services performed entirely outside of Connecticut.
But, due to covid there was a convenience of the employer ruling. Which also did not apply to MA.
Five states (Arkansas, Delaware, Nebraska, New York, and Pennsylvania) apply the convenience
rule. Connecticut applies the rule only if a nonresident taxpayer’s resident state applies a similar
rule. In other words, Connecticut applies the rule to nonresident employees of a Connecticut
employer who work from a remote location and reside in one of the five states listed above.
Consequently, wages earned by these nonresidents are allocated to Connecticut unless they are
working remotely (i.e., in an out-of-state location) due to the necessity of the employer rather than
the employee’s convenience (Connecticut Resident Income Tax Return Instructions, 2019 Form CT1040, p. 5).
During the CT interview you had to do an allocation of your income as you did work physically there it seems.
Make sure you only entered 1 W-2 with 2 states. Many enter it as 2 w-2's and that could be your issue.
Did you do the nonresident state first? You had to.
Then delete the MA return.
Start MA over from scratch.
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