There are three ways that state returns can be submitted.
Stand Alone states allow taxpayers to electronically file there State Return with or without their Federal Return.
Piggyback states MUST electronically file their State Return WITH their Federal Return. If the Federal Return gets rejected then the State Return will also be rejected. Typically any corrections made to the Federal Return should also be corrected on the State Return and then they can be resubmitted together. If the Federal Return is accepted, but the State Return is rejected then corrections will need to be made to the State Return and then resubmitted by itself. If you electronically filed your Federal Return without submitting your State Return then you will need to paper file the State Return.
State Only states can be submitted without the Federal Return so long as the online tax prep has a record of your Federal Return already being submitted and accepted.
Once your returns have been accepted they will begin to process independently from each other. Check your state’s revenue service or government website for more specific information on when they will begin accepting returns and when to expect your refund.
District of Columbia (D.C.)