Thanks so much for your help. (For some reason this made me re-register with another username but this is the original poster).
This all makes sense to me except the final step...
I allocated the income into resident and nonresident income for my NY return (the interview questions prompted this) and used the percentage of non-resident income out of the total income, times my new york state taxes (ny city doesn't tax nonresident income) to fill in the "double taxed" field in my Maryland return. That made sense, and I confirmed with the cpa on "live" confirmed this was the way to go.
The thing I'm still confused about is the interview portion of the NY form that asks for taxes paid to other states--it asks how much I paid in MD taxes, so I entered the amount of maryland taxes I paid, based on the MD return I completed. But doesn't that mean that I am being credited twice, once from NY for MD, and once from MD to NY?
I spent a good chunk of time today with a diff "live" rep who seemed to confirm that what I did was correct, but wasn't entirely sure... reading this response makes me wonder again. :( Do I need to do some sort of apportionment of the MD taxes I enter into the NY form, even though the interview question seems to only ask for the full amount of taxes paid in MD, or is it actually correct to just enter the full amount I paid in MD taxes as prompted?
