How can I estimate and pay taxes for the next year after successfully filling returns through turbo tax for the prior year?

[tarun-eldho]

I completed my returns for 2018 and then sold some stock. Now I will need to estimate taxes for 2019 and make tax payments for the gains.

[JohnW15]

Please see the FAQs below for guidance in filing estimated tax payments for tax year 2019.

Can TurboTax calculate next year's federal estimated taxes?

https://ttlc.intuit.com/replies/4242911

Can TurboTax calculate the estimated payments for next year's state taxes?
https://ttlc.intuit.com/replies/3301735

You can also get payment vouchers from irs.gov at 2019 Form 1040-ES.

[tarun-eldho]

The above links explain estimating 2019 taxes while preparing 2018 returns. I'm asking, how to do the same once 2018 taxes are already filed?