Olive Press News Spain Share \n');document.write('\n \n\n');} Last month two of Spain’s high street banks completed a merger to become Spain’s largest banking entity, but what does that mean for those who bank with either Caixabank or Bankia? Here’s what you need to know: The new mega-bank has insisted that things will broadly remain the same for those existing clients of either bank but some things will change, mainly for those customers of Bankia. Bankia – which took over from the ill-fated Caja Madrid a decade ago is now obsolete as a brand and its name will no longer exist.