We applied for the ITIN number for my spouse, and we just received it today, is there any way I can add this to my 2018 tax return and e-file the states taxes?

[DoninGA]

Enter the ITIN for your spouse in the My Info section of the program.

If you have already e-filed the federal tax return and it has been Accepted by the IRS -

When you sign onto your online account and land on the Tax Home web page, scroll down and click on Add a state.  See screenshot

This will take you back to the 2018 online tax return.

1. Select State from the menu on the left (on mobile devices, tap in the upper-left corner to open the menu).
2. On the Let's get your state taxes done right screen, select Continue and follow the onscreen instructions.