I have a tiny "practice". So limited software experience. Current (not new) client/TP attempted to do her own 2019 at Block. Thought she had filed....but has not. I confirmed after helping her establish tax account access and reviewing with her.

Now, I have 2019 1040 completed. Penalties and interest calculated. However, when attempting to schedule withdrawal of the entire amount. Software only allows (1). Original balance due  (2). Late Filing Penalty for withdraw.

Does not include (3). Late payment (4). Interest.

Why?

Will TP simply get a letter from IRS calculating this (again....but more accurate?)