税率最低的国家是巴林、科威特、文莱和卡塔尔。这几个国家的公民，不论收入多少，所付的所得税税率均为零。税率最高的国家是挪威。该国1974年1月工党与社会主义联盟废弃了税率的最高限制80％后，大约有2000居民列入超额征税名单，他们必须缴纳其纳税收入100％以上的税收。其? The countries with the lowest tax rates are Bahrain, Kuwait, Brunei and Qatar. Citizens of these countries, irrespective of their income, pay an income tax rate of zero. The country with the highest tax rate is Norway. After the country’s Labor and Socialist coalition abandoned the tax rate ceiling of 80% in January 1974, about 2,000 residents were included in the excess tax collection list and must pay taxes of over 100% of their tax revenues. its?