WishList Member integrates with a wide range of Payment Providers so tax is handled by the chosen payment provider you’re using.
You have the option of integrating with any payment provider and they process the payments while WishList Member creates the member accounts and provide access to protected content. This means the charging of any taxes would also be handled by the payment provider.
Payment providers handle the options related to taxes based on their functionality so they can provide more details related to how taxes can be calculated and processed.