An external assessment that attempts to account for the whole of the economy – and calculates the budget contribution on this basis – should increase tax efficiency. Poor taxation capacity has, after all, been an endemic problem in southern Europe, including in Italy (and especially in Greece), while France and Germany, which both received large rebates, are better tax collectors.
平心而论，政府尽可能对更多国内经济活动进行监控和课税从根本上说是明智的。试图计算整个经济——并以此为基础计算预算贡献——的外部评估应该可以增加税收效率。毕竟，拙劣的税收能力是包括意大利在内的南欧的顽疾之一（希腊尤其严重），而收获大笔退款的法国和德国的收税能力要强得多。