FREE WASHINGTIN WORKING FAMILIES FORM.

Try this:

1. Open or continue your return.
2. Select State, then select Start next to Washington.
3. On the screen, Finish up your Washington return, select Start next to Working Families Tax Credit.
4. Select Start my application on the screen, Start your WA State Working Families Credit application.
5. Answer the questions on the following screens.
6. Once complete, you will get to the screen, Great work finishing up your application. Select Continue.
7. Select Continue on the screen Ready to Review Your State Return.

Once you file your taxes, TurboTax will automatically transmit your application to the state. 

@kkmoss