Amazon now collects sales taxes across the country in states that have a sales tax and where Amazon has a physical presence with distribution centers or other facilities, such as California. But a sales tax often is not collected on purchases made from third-party sellers that appear on Amazon's website, and critics contend that gives the web platform a price edge over other retailers that are required to collect a sales tax.
Source: Los Angeles Times March 28, 2018 15:56 UTC