Be sure you follow the TT instructions for preparing two part-year resident state returns.
How do I file a part-year state return?
Since you both worked all year in MA, you should allocate all your work income to MA. You should allocate to CT only the portion of your incomes earned after you became residents of CT.
CT will give you a credit for the taxes paid to MA on the portion of your income taxed by both states.
You will note from the instructions that TurboTax recommends that you complete the return for your "old" state before you do the return for your "new" state, so that the program can calculate the credit.
If you make your entries correctly and follow the TT instructions, then your returns should produce an accurate result.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
