We charge sales tax in the following states. Tax rates can vary down to the city level. In many states all items we sell are taxable however in certain states some items may be exempt from sales tax. In addition some states require us to charge sales tax on shipping. For your convenience, we provide as sales tax estimate during checkout and on your order confirmation. However many factors can change between the time you place your order and when it ships. Because of this, your final sales tax charges may be different from the estimated amount. In all cases our systems will determine the appropriate tax to be collected. If you have a valid resale certificate on file with us you will not be charged sales tax.