4. Official Government Tax Authorities. Tax laws are constantly changing, and an MNE's tax planning and management processes must therefore include a continual updating of tax practices by country. Use the following government tax Web sites to address specific issues related to the respective countries: Hong Kong's ownership change to China: www.info.gov.hk/eindex.htm Ireland's international financial services center: www.revenue.ie/ Czech Republic's tax incentives for investment: www.czech.cz/homepage/busin.htm