I receive a purchase order that is provided to me by the company that I subcontract to. How can I convert/copy that into a billable invoice that I can track in quickbooks

You can convert a purchase order (PO) into a bill, mark the relevant items or expenses as billable, and then create an invoice based on those items, danhiscock69.

Here's how:

1. Click the Plus icon.
2. Choose Purchase Order.
3. Enter the necessary information.
4. On the Item details field, select the items and make sure to add the customer.
5. Press Save and close. 

After that, add the billable transaction when you create an invoice. In case you haven't enabled the billable expenses feature, follow the steps in this article: Enter billable expenses. 

If you have any additional questions, please don't hesitate to reply. We're here to help.