So my friend and I were double-checking the taxes, and it turns out the GST on my invoice is overstated by about $1.8k. The GST (5%) should be multiplied by the TOTAL SALES PRICE​​​​​, when it was actually multiplied by the sum of the TOTAL SALES PRICE + PST on the invoice.  The GST should have stated $10,008 by multiplying $200,177.80 by 0.05; instead, GST amounts to $11,843.71 which comes from multiplying $236,874.1 by 0.05.  The PST is calculated correctly because in British Columbia, the Lu