In MA, is it possible to file your State taxes before filling your Federal taxes?

Answer 1

Yes, this is true for all states. Many people file their federal or state return early if they are getting a refund so that they receive that money to pay a tax due with the other. This is common practice.

Answer 2

Yes, in MA it is possible to FILE your State income tax forms before FILING your Federal income tax forms; note the emphasis on FILING.

You still have to PREPARE your Federal income tax forms prior to PREPARING your State income tax forms, but you don't have to FILE them before you FILE your State income tax forms.