The first period
Set it up once
Drop in this period's files — Excel sheets, CSVs or text-based PDF bank statements. You answer four things: the key column, how far apart amounts may be, where next month's files will be, and a name; everything else has a default, or AI drafts the steps with your own key. Either way you end up with ordinary rules you can read and change: match on a key, compare amounts, sum up, deliver.