How to show a proper aging with correct due dates for customers that have terms of Net 30, 60 or 90 EOM? QB doesn't seem to reflect the EOM due date correctly, When looking at the Customer info page, all EOM due dates appear as only 30 days or 60 day

It's nice to see you here, @Roxanne2024. Let me share some clarification about the due dates showing on the customer info page.

Please know that the due date displayed depends on the terms you've set up. Since they only appear as 30 or 60 days, you may be using Standard, which counts the number of days specified from the invoice date. To verify, take note of the term used on the transaction and then follow the steps below:

1. Select Lists on the top menu.
2. Hover your mouse to Customer & Vendor Profile Lists, then Terms List.
3. Double-click the term used on the invoice.

If you're referring to making the last day of the month the due date, create new payment terms as Date Driven. It will allow you to require payment on a specific day. You can do so by clicking the pencil icon from the Customer information page or going to the Terms List. I'll show you how:

1. Once you select the customer's name, click the pencil icon to edit.
2. On the Payment Settings, press the Payment Terms drop-down.
3. Hit Add new to enter the preferred EOM, then tap OK.

Once done, you can edit the invoices to choose the correct terms. From there, you'll be prompted to either reflect the changes in your current transaction or include the prior and moving forward ones. I'm adding a screenshot below:

Here's an article about the fields available on the template: Set up payment terms.

I'm adding this reference for your guide in case you'd like to add a discount to early payment: Record an invoice payment.

Let me know if you have additional concerns about managing terms and sales transactions in QuickBooks. I'm always here to help. Stay safe always.

Thank you , I now know what I want to do is not feasible.