Funds are usually withdrawn on the payment date you specify in TurboTax, assuming your e-filed return has already been accepted (received) by the IRS. If that date falls on a weekend or federal holiday, the funds are typically withdrawn the next business day.
If you file right before (or on) the April 15, 2024, deadline, the IRS may not be able to debit your payment until after the deadline due to high e-filing volume. Also, it can take your bank another few days to post the debit to your account.
As long as you file your return or extension on or before April 15, 2024, and you select April 15, 2024, or earlier as your payment date, you won't get penalized for late payment.
If you don't see the debit in your bank account 7–10 days after your return has been accepted, call IRS e-file Payment Services at 888-353-4537 or contact your state tax agency.