Yes, TurboTax can help you with 2019 Estimated Tax Payments.
Go to Federal Taxes
Other Tax Situations
Other Tax Forms
Form W-4 and estimated taxes
I have already finished and filed my return. Do I have to open a new return to do this?
Maybe this option is not available on the online product I used, not a CD or download version?
No, you can still do this, click on "Add a state" and you just do this to get back into the 2018 file, then go through the answer above and you can do the Estimates and then print them.
apparently the form is not currently available and I'll have to wait.
Take a look at this link as they should be ready right now. <a rel="nofollow" target="_blank" href="https://ttlc.intuit.com/replies/3301458">https://ttlc.intuit.com/replies/3301458</a>