"Pay 2023 Income Tax" before April.15.2024 in 4 payments

Hello,

 

I have higher tax payment due to some Retirement (post-60) withdrawal.

I submitted online Federal/State taxes using TurboTax few days ago, without payment by selecting mailing check and 1040 is accepted.

I opened my IRS account (https://sa.www4.irs.gov/ola/).

Can I use "Pay 2023 Income Tax" before April.15.2024   4 times (4 payments through Pay by Bank Account) to pay off, because balance is high?

Do IRS charge underpayment penalty for the retirement withdrawal in 2023, even though payment made before April.15.2024? TurboTax didn't indicated underpayment penalty during online filing.

 

Below is probably because my 1040 is not processed yet.

Pay Balance in Full - Unavailable at this time.

Pay Towards Your Balance - 2023 Income Tax - Balance Unavailable

 

Thanks and Regards,

PP