How do I change the number of dependents in the preparation for state taxes?

You would need to change your dependent information in the Personal Info section of TurboTax, you can add or remove dependents there - this dependent change will flow to your D.C. return.

To enter additional dependents in TurboTax, please take the following steps:

• In your return, select "Personal Info" tab
• On "Personal info summary" screen, click on "Add a dependent" box
• Enter information as requested on each screen for the additional dependent 

To remove a dependent, please take the following steps:

• In your return, select "Personal Info" tab
• On "Personal info summary" screen, click on "Delete" to the right of the dependent whom you wish to remove
• You will be ask whether you are sure that you want to delete the dependent - click on "Yes" button

I have no dependents listed and have never had any listed!!

Check your filing status. There is a chance that it might be set at Head of the Household. That would be found in the personal information section of the federal return.

 I would normally suggest deleting the form, but there is other information on the Schedule that is necessary. To get around it, Turbo Tax may allow you to print out the return and mail it in.