I recently moved to Tennessee from Amsterdam, the Netherlands. I'm a web developer with a large client base in the Netherlands. In Holland I was required to add 21% tax (VAT) to my invoices for Dutch clients. However, whenever I billed clients in non-EU countries the tax rate on my invoice had to be 0 % (VAT reverse charge).
Now the tables have turned. Since I will be invoicing my Dutch clients from my newly founded LLC in the US, how do I handle the tax aspect of my invoice for my Dutch clients? Do I put 0 % sales tax on my invoices? Do I charge the regular tax amount for my new home state? Do I charge no tax at all? For what it's worth, I work from home.
Edit: I've contacted a TN accountant, see answer below.