State tax filing

You are correct.  You file MA Form 1, and since you are both regarded as full-year residents, you can file it as MFJ or MFS, your choice.

Page 6, https://www.mass.gov/doc/2019-form-1-instructions/download

 

Note that since your wife is regarded as a full-year resident by Massachusetts statute, her income for the entire year is subject to MA taxation.

**Answers are correct to the best of my ability but do not constitute tax or legal advice.