How the payment due date works
Formula. Due date = invoice date + payment terms in calendar days. If that lands on a weekend, it moves to the next working day.
Example. An invoice dated 21 October 2026 on net 30 lands on Friday 20 November, so with a Friday–Saturday weekend it is due on Sunday 22 November.
Tip. Public holidays such as Eid or National Day are not skipped. Write the actual due date on the invoice to avoid arguments.