I'm a US citizen currently traveling in Asia. I'm opening a dropshipping Shopify store using my sister's address in the US.
For dropshipping I have China based suppliers for now and I'm mainly selling to US customers. I also plan to work with Printful, which would mean that I'll have a US based supplier for the POD products. In addition, I might expend my customer base to the rest of the world later.
So my questions are:
1) How should I go about configuring my tax info?
2) If and how should I charge taxes for my products?
3) Would my "tax nexus" be considered in the US (at my sister's address)? Or would it be the country that I'm currently staying in?