Sales tax math "error" from invoice line item credit
I have a small tax error I can't seem to figure out. I created an invoice for $8,410.98 + $883.15 (10.5%) sales tax for a total of $9,294.13. In this invoice there is a line item credit of $126.36 for a non-inventory part (income account) that was returned.
Our books are cash basis
What confuses me is when I pull a Sales Tax Liability report that includes the date of this invoice, this invoice is increasing the the tax collected by a weird amount ($11.85). This is weird amount because 10.5% of $126.36 should be $13.27.
1.Why is this increasing the tax liability on the creation date rather than the payment date (Cash Basis remember)
2. Why is it a weird amount?
What am I missing?
