Settlement calendars for multi-rail products

When a product speaks to more than one payment rail, customer support inherits conflicting “when will I see the money?” answers unless settlement cut-offs are designed on purpose.

Put cut-offs in the brief

Architecture documents should state each rail’s settlement window, timezone, and failure deferral behaviour. Product copy and support macros should quote the same source.

Exception Mondays

Public holidays and partial settlements deserve an explicit playbook. We have watched teams invent one in Slack during the first Easter weekend after launch — it is a poor time to invent.