She has been late every year because she doesn't get her tax allocations until months after the extension filing was due so we have been throught this every year except in past she paid online instead. It is not demanding the late filing fee of $485 - which did surprise me. Just the tax due plus that same amount as a penalty for late payment.

I want to pay it in full electronically with the return because she has finally agreed to get her act together so that we will file estimated tax with her 2024 extension and hopefully never have this issue again.

What is befuddling me is the review directions tell me I need to unchoose payment by check to send the whole amount by EFW. Is there even a payment by check choice anywhere?