I have reached out to support numerous times about this issue and it is still unresolved.

I noticed it at the beginning of 2023 when near the end of Q1 none of my invoices which used "billable expenses" as line items and a second line item with "markup" hidden from the customer had calculated the tax correctly.

I spent 4-6 hours that first day with support online and using screen share. they were supposedly going to elevate it but declared there was no issue on their end and they didn't know why my account wasn't working correctly.

Bottom line is the markup shows up as an uncategorized expense and the based on location sales tax calculator marks it as non-taxable, which is incorrect. the markup should match the line item's category.

It seems like a simple fix on the backend for the programmers in theory, if they think of it in that regard.

I looked for the discussion group that was created and I had posted in about this issue back then, but it seems to have been wiped from existence. I remember at one time, I had commented on a reply stating the issue had been resolved when obviously it has not.