The current TARIC (Integrated Tariff of the European Communities) tariffs can consulted at http://ec.europa.eu/taxation_customs/dds2/taric.
It is also possible to search the TARIC database using the "Search"-button on the calculator. Any query entered there is sent directly to the TARIC search interface.
Update: we are currently working on integrating the entire TARIC database in our calculator. We estimate the integration will be complete in the last week of may 2013. Stay tuned for updates!