It looks like you don’t have to file DC, actually: http://otr.cfo.dc.gov/otr/cwp/view,A,1330,Q,593736.asp
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Do I have to file a DC income tax return?
You must file a DC tax return if:
* You were a resident of the District of Columbia and you were required to file a federal tax return.
* Your permanent residence was in the District of Columbia for either part of or the full taxable year.
* You lived in the District of Columbia for 183 days or more during the taxable year, even if your permanent residence was outside the District of Columbia.
* You were a member of the armed forces and your home of record was the District of Columbia for either part of or the full taxable year.
* You are the spouse of an exempt military person or of any other exempt person such as a nonresident presidential appointee or an elected official.