My son just filed his 2021 tax return. The IRS should receive the return on June 30, 2023. TurboTax advised me to let the IRS compute the penalty and interest. I would have preferred to include the penalty and interest in the mailing. Can you estimate the penalty and interest or provide a contact (ohter than the IRS) to compute the amount due. If yes, how can I pay the penalty and interest now since the return has been mailed?
Tom B
