← All resources
Cash flow

Ageing your debtors before they age you

Most small businesses discover a bad debtor at 120 days. The signal was there at 35.

5 min read · April 2026

Ageing is simply sorting what you are owed by how long you have been owed it. Current, 30, 60, 90, 120+. The value is not the report — it is the habit of looking at it on a fixed day every month.

The 35-day signal

A customer who has always paid on day 28 and suddenly pays on day 42 is telling you something. One late payment is noise; two in a row is a pattern, and the right time to have an easy conversation is before the amount gets uncomfortable.

Statements do the asking for you

A monthly statement showing the account, the ageing and the total is a neutral document. It is much easier to send than a phone call, and it often clears the account without one.

Decide your rules once

Reminder at 7 days overdue, statement at 30, stop supply at 60, formal demand at 90. Written down and applied evenly, the rules stop being personal — which is exactly what makes them workable.