Arizona does not tax precious metals, including coins, bars, and basic bullion, with sales tax. This is because precious metals are considered monetized bullion, which is defined as any form of precious metal coin, bar, or round that is issued as legal tender or a medium of exchange by a government. However, local authorities may add additional taxes. For example, some companies, like APMEX and BGASC, may collect taxes on certain products, such as copper products, accessory items, and processed items. Processed items include precious metals that have been altered by third parties into items that are valued more than their precious metal content, like statues or colorized coins.