How much do you put for 9465

[cipparulo12345]

I am doing client's 2021,2022,2023,2024 1040. She is going to owe about $2,500 each year for a total of $10,000. I know this because I did her 2020 return and she owed $2,500 and nothing has changed. When I do the installment request for her 9465 do I put down $10,000 as amount owed? Naturally this will not cover all of the penalties and interest for all of the years which is unknown to me. Also I am going to do the 9465 for the latest return which will be the 2024 return.

[FEDUKE404]

I do hope you collected your professional fees up front. . .