State tax filing

Thank you for your reply. 

 

Was the same income taxed by Maine and DC? 

Yes, the only income that I made in Maine was tax free to both Federal and Maine.  I sold a condo that I had lived in for 3 years at a profit.    However, I still had to pay tax in Maine was on the income (wages) that I made in DC.  I had to pay $890 to Maine on these wages.      These wages are also taxed in DC (obviously) and I understand that DC would give me a credit for the $890  of taxes that I paid to Maine, however the credit that I get in the DC return (Schedule U) was $1359.   I don't understand how I can get a larger credit on the DC return than the actual taxes that I paid to Maine?