Request: Add the ability to record, track and report on EXPENSE taxes

I’ve been working on setting up InvoiceNinja (currently self-hosting v4.5.18 on Linux). While working through the migration of data and importing information I’ve noticed one big thing missing. Maybe I’m mistaken and you can help me find this feature. Essentially, here in Canada, we need to calculate taxes paid on expenses for a time period (usually quarterly). In fact, it’s an important data point - seeing after a three-month period what HST (tax) was paid out in expenses for that time period that every business must report (Line 108 - Total ITCs). I've confirmed that reporting on this data is not possible inside of Invoice Ninja. For comparison - in Freshbooks, this information is gathered in the “Sales Tax Summary” report under the column “Taxes” and row “Less Expenses” - - all major applications include this ability. In Quickbooks, it's "Calculate Input Tax Credits." If there could simply be a field that records tax on an expense item, and then a re…