Can i Pay before filing ?

[DoninGA]

To pay the TurboTax online account fees by credit card, without completing the 2019 return at this time, click on Tax Tools on the left side of the online program screen. Then click on Print Center. Then click on Print, save or preview this year's return. On the next page, to pay by credit card, click Pay Now. The next screen will show a review of your Fees, click on Continue. Complete the next screen to pay by credit card and click Continue.

[SteamTrain]

...but if your state forms aren't  ready to use yet, you may not be able to make that part of the software payment.   Most will be usable by sometime the first week of January..but a few states may not be.  Prices won't rise before the end of January.   (usually, the 1st of March, but we can't know if this year will be different)

[Critter]

When will my forms be ready?

Historically, IRS tax forms start becoming available in January, with a few stragglers (most notably Form 1040X) getting finalized in February.

State tax forms can become available for filing any time between December and late February, depending on the state and the tax form.

For specific forms and dates, refer to the Forms Availability Table for your TurboTax product, see the related information below.

Can I Still Work On My Return Before My Forms are Ready?

Yes, according to the following:

Federal Taxes
You can still work on your return and finish most of it. Once your forms become available, we’ll create the forms and include all of your info.

You’ll only be able to e-file or print your return once the forms are available.

While you’re working on your return, we’ll ask if you want to receive email updates when your forms become available.

State Taxes 
If your forms aren’t available, you’ll get a message asking you to return once they become available.

While you’re working on your return, you’ll have a chance to let us know you want to receive email updates when your forms become available.

Related Information:

           IRS Forms Availability Table for TurboTax Individual (Personal) Tax Products

·         State Forms Availability Table for TurboTax Individual (Personal) Tax Products