Different states have different rules for how they tax residents and non-residents. Massachusetts takes all income into account - whether it was earned in Massachusetts or not. Then it takes the percentage of income earned in Massachusetts they and figures the taxes that way.
Look at your form 1-NR/PY when you come to the end of tax preparation and you will be able to see your ratio on lines 13 and 14.
@anton
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
