Which of the following best describes a fixed date setting for invoices?

A fixed date setting for invoices refers to a scenario where the due date remains consistent and does not fluctuate from one invoice to the next. This means that for each billing period, customers can expect their invoices to be due on the same day, making it easier for both the business and the customer to manage cash flow and payment scheduling.

In contrast, other options describe different types of invoice settings. A dynamic invoice date that is based on payment history would indicate variability based on the customer's past behavior, which does not align with the definition of a fixed date. Similarly, a variable date changing monthly according to the billing cycle suggests a changing due date, which directly contradicts the concept of being fixed. Lastly, an invoice date set by the customer implies that the customer has control over the due date, again deviating from the stability of a fixed date setting.