[GNC] rounding of Invoice vs Accounts Receivable

[flywire]

Since I use cash accounting I don't have any experience with GnuCash
invoicing. I process heaps of invoices, including recipient-created
invoices. Tax-inclusive or tax-exclusive costs are optional in Quickbooks
(which I use for business accounts) and calculated values can be user
overwritten. I assume it's round-down which is legally correct in my
jurisdiction and mostly agrees with invoices.