We are a small college in Texas, how do we get taxes removed from our invoice?

Unfortunately, there's nothing we can do about this since we do not collect the tax. 

Please note that the VAT charges are applied based on the location and the payment method you are using. If you are using a credit card and FastSpring as the payment method, you may check the following article from FastSpring for more information on VAT and list of countries where tax is being collected:

https://support.fastspring.com/hc/en-us/articles/207436686-How-are-VAT-and-sales-tax-handled-

Thanks