Customer Debtor Days - Xero

Customer Debtor Days - Top 10 Fastest Paying Customers Vs Top 10 Slowest Paying Customers. Microsoft Power BI with a Xero Organisation. Customer Debtor Days – Top 10 Slowest Paying Customers. We wanted to get back to Accounting and the power in using Business Intelligence. Debtor Days is a classic ratio we all know. Slicing Debtor Days by Customer is a really popular report feature request in the Xero forums, so a good discussion point.