Configuration:

1. Select the payment term in the accounting application -> configuration section.

2. Create a payment term with ‘9 days after end of month'.

Demonstration:

1. Create an invoice on 4/1/2024. Select the payment term: Due on the 9th of the month.

2. After confirming the invoice, we can see the due date is 5/9/2024.

🗒️Note: In this case, the due date can’t be in the same month of the invoice date.

This means that we can’t achieve the case that the due date is 4/9/2024 if the invoice date is before 4/9/2024, for example, 4/2/2024.