State tax filing
Go ahead and review your DC tax return and make sure it is prepared as a full year resident return on Form D-40. Look at page 1 and make sure the section under question #2 is not marked as being a part-year resident.
As long as this section isn't completed, and all of your income for your federal return flows into your DC return without any deductions on page 2, line 8 under Subtractions from DC Income, your return would not need to be amended as there would not be any changes.
See the attached link for more details on when you may need to amend your return.
