Especially we can change the prices to adjust to the changing currency exchange ratios.</p> <p>For each purchase Wikidot Inc. will issue a valid VAT invoice as directed by Council Directive 2001/115/EC of 20 December 2001 and applicable Polish tax law.</p> <p>VAT tax of 23% is added to all purchases at Wikidot.com for customers from European Union unless they qualify for reverse charge by providing a valid EU VAT ID, as directed by Council Directive 2006/112/EC and applicable Polish tax law.