Excel function expert needed for calculation

This is an Excel 2021 Microsoft Office 365 template called "bill paying checklist". I'm trying to figure out what function(s) I would use to automatically subtract the bill amount (for example, $50 in cell H4) from my Total Bills amount (for example, SUM(H4:H47) in cell H48, let's say $200) after I insert a checkmark in any cell in column K (by double-clicking). Value for checkmarks = 1. The result would indicate how much I still owe in cell J48; thus, if all bills are check-marked the result should be $0. Thank you!!