Question on taxes

[LD331]

Hi,

I am new to this and I have question on taxes. My store is US based and planning to dropshipping products to US, UK and Canada. I have idea how to add nexus states for US taxes in shopify. My questions are around international shipping.

I know there is a threshold for each country before you register, collect and remit taxes.

1. Should I charge tax for customers in UK or Canada? Assuming supplier is in US?

2. Should I charge tax for customers in UK or Canada? Assuming supplier in customers country UK or Canada?

3. Should I charge tax for customers in US, UK or Canada? Assuming supplier is in China?

I appreciate a response.

Thank you