Welcome I would like to parcitipate in VAT implementation for OFBiz. However it would maybe be good to gather requirements for different countries on on Wiki. I know requirements for Poland which are some more specific than general EU. I could put them there.
Resources : http://markmail.org/message/bkqmwwvswzlgzbfr https://issues.apache.org/jira/browse/OFBIZ-366