Unless your employer specifically acted to establish a bona fide office at your telecommuting location, you will continue to owe New York State income tax on income earned while telecommuting. You will also have to file an IL tax return taxing the same income. However, you will get a credit for the NY taxes that you paid on your IL tax return. The credit will not be larger than the amount you owe to IL.
Note: Prepare the NY tax return first so that the credit will carry onto the IL return.
Also see NY publication Nonresident whose primary office is in New York State
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
