Due dates allow you to set a specified date for payment, right on your invoice. This makes it easy for a client or customer of yours to know by what date they need to send you payments. You may have some terms that add a fee to an invoice that is not paid by a due date, or it might be a reminder for you to follow up with them.
Setting up Due Dates
Select Sales > Invoices in the sidebar menu
Click an already existing invoice you'd like to add a due date to, or create a new one
On the invoice screen, you will see Due Date under Invoice Date. Click it for a dropdown
Select the Due Date you would like from the list
Please note - Due Dates do not show up on an invoice until the invoice is finalised.