An IMDbPro membership is subject to tax in the following US states and US territories:
Sales tax is calculated based on the combined state and local tax. Tax is determined based on your billing address listed in the Payment Methods section. To ensure you are charged correctly, please make sure your billing address in the Payment Methods section is up to date.
You can view a breakdown of your charges including the amount of tax you were charged by viewing your Receipts in Account Settings.
If you reside outside of the US, please see more information on VAT charges here.