It depends. Please consult this article. U.S. Orders:

Sales Tax on Bullion: U.S. State Rates and Why GoldSilver.com Collects It

New York Residents: State law requires that we collect sales tax on bullion purchases under $1,000 for any order shipped to a New York address.

Non-bullion products are subject to prevailing local sales tax rates in New York.

All Jewelry and Krugerrand products are taxed for any order shipped to a New York address.

International Orders:

For orders shipping outside the U.S., we do not withhold any sales, VAT, customs or other taxes and fees due upon receipt. Customers are responsible for paying any duties that result from their order.