How is Sales Tax Calculated?
If an item is subject to sales tax in the state to which the order is shipped, tax is generally calculated on the total selling price of each individual item. In accordance with state tax laws, the total selling price of an item may include some, or all of: item-level shipping and handling charges, item-level discounts, and gift-packaging charges. The amount of tax charged on your order will depend upon many factors including type of item purchased, and destination of the shipment. Factors can change between the time you place an order and the time of credit card charge authorization, which could affect the calculation of sales taxes. The amount appearing on your order as Estimated Tax may differ from the sales taxes ultimately charged.
The tax rate applied to physical orders will generally be the combined state and local rate for the address where your order was shipped. Therefore, the sales tax rate applied to your order may be different for an order shipped to your home address versus an order for the very same items shipped to your work address.