To close out a year of remarkable corporate tax cutting around the world, Kuwait has passed a bill to sharply cut its uniquely high rate. Here is the one-sentence story in the Washington Post today (page D8):

Kuwait’s parliament passed a bill to cut taxes on profit of foreign companies to 15 percent, abolishing a progressive scale established in 1955 with a maximum rate of 55 percent, in a bid to attract investments and diversify the economy.

Progressive is the past; flat is the future.