<p>C:/NRPortbl/DCC/CAB/4953047_I.DOCX-28/02/20l3 A transaction terminal system for a card-based purchase communicates with a host system to provide dynamic currency conversion. The transaction terminal system can select one of a number of different rate request messages according to various local factors in order to obtain a currency conversion rate for dynamic currency conversion. [Figure 1 for Abstract]</p>