@PFSlow Turbo Tax never calculates a late payment penalty or interest. It only calculates the estimated underpayment penalty. It's a penalty if you owe too much or for not paying in enough withholding during the year or not paying in evenly. It's very common and normal and expected for the IRS or state to bill you for more or send you a refund.
You might be able to eliminate it or at least reduce it. You can go to Federal Taxes tab or Personal tab, under Other Tax Situations and select Start by the Underpayment Penalties. You will answer a series of questions that may reduce or eliminate the penalty. Or you can elect to have the IRS figure the penalty for you. It's form 2210.
And for 2022 if you started a return before Oct. 16, 2023 you can efile it until Oct 31 at 9pm PST.
