First, I apologize, I am not the most technically-minded person.

We sell products throughout Canada and have specific tax rates for each province. Until 2 purchases came through yesterday, it seemed like the taxes were calculating properly.

Starting yesterday, on BC only, Zen Cart is calculating the tax like this: HST + GST (should not be there at all...) + HST (again) + GST (again!). Customers are being charged double the tax, but only on this zone. When I look at the Tax Rate for this zone, it is set up as 12% HST. I can't figure out where the 5% GST is coming from or why it is doubling it...

I did a bunch of test purchases and BC is the only zone that this is happening to...

Any help would be much appreciated.

Thanks in advance.