Articles on accounts receivable management, debt collection and credit risk.
A collection letter is not there to prove a point, it is there to get paid. 3 templates ready to copy, when to use each one, and the list of what should never be written.
DSO is the average number of days between invoicing and getting paid. It is calculated from two figures already on hand, and it turns a day of delay into euros. Formula, worked example and the part almost nobody calculates.
A customer almost never stops paying overnight: months of signals come first, and most of them sit in data already on hand. The 7 that best predict a default, what detects each one, and what to do about it.
The statutory late payment interest rate for commercial transactions is 10.40% for the second half of 2026. It applies by law from the day after the due date, even when the contract says nothing. Where it comes from, how to calculate it and when claiming it pays.
Royal Decree 238/2026 has been in force since 20 April 2026, but the 12 and 24 month deadlines are not counted from there. What is published, what is missing, and why the part that changes collections most is not the invoice format.