Apron automatically recognises due dates on bills if they are specified in the document.

If a bill lacks a due date and there are no contact rules set, Apron leaves the due date field empty.

You can apply a default due date rule to all bills (e.g., 30 days after the issue date). To do so configure this in Settings under Advanced Bookkeeping -> Default Due Date. You can also establish specific rules for individual suppliers via Contact Rules.

For receipts, the due date is set to the issue date unless the document specifies otherwise.