Finishing the work and finishing the job are two different events. Until the money arrives, the thing stays open: in a ledger, in a calculation about rent, in the small ongoing question of whether it will need chasing. The person who did the work cannot put it down, however well it went. Payment is not only money changing hands, it is permission to stop thinking about it.

If you owe someone for finished work, pay today rather than at the end of the cycle. If a system stands in the way, say when it will land so the waiting has a shape.