Payments to HMRC allowable/disallowable expense?

Hi, I do my own self assessment using a third-party software known as Quickbooks. I've noticed that the payments I made on my self assessment last year are noted down as a disallowable expense in the specific category I use for the payments. Is this incorrect? Should I be deducting the total of the payments to HMRC from my total business income?

Hi,
No, as the payments would appear to be the tax you are paying on your profits and the tax is not an expense.
Thank you.