Will I be charged interest by the IRS for not making estimated tax payments in 2018 on the 1040-ES vouchers ?

[jfin2015]

I'm filing now and just discovered the old vouchers for 2018 . I'm wondering if turbo tax took that into consideration because I wasn't prompted to find out by them if I had made estimated payments.

[AnthonyC · Accepted solution]

Yes, TurboTax will automatically compute if you are liable for an underpayment penalty for not paying estimated taxes based on your 2018 return.  Any underpayment penalty would show on Line 23 of Form 1040 and TurboTax would have prompted you about this penalty during the interview.