We've added a second site to a project installation that has been running for a couple of years now. While the primary site uses mainly PO receipts to create billing lines, this second site is using cost categories set up under Miscellaneous, and entering data from field tickets into the Miscellaneous Log to create their billings.
We created invoices for the first bunch of entries, and all the invoices are coming through with no tax on them.
The customer has tax schedules attached to all their customer ID and address ID. If I create entries in Sales Order for this customer, the tax pulls correctly.
The cost categories we used are set up to use tax based on customer.
The Billing setup screen for project has all the tax options set to pull tax based on customer, and tax calculations are set up to use the advanced schedules.
The first site has no problem with the tax pulling when they bill, and we tested thoroughly in the test system with the new company and had no tax issues. I went through all the project setup screens I could think of in the test system looking for the differences between test and live, and can't see anything obvious.
I'm guessing this must be something to do with the way I've set up the cost categories as type Miscellaneous, but I have no idea where it might be hiding.
Any input would be welcome.