How much tax revenue has the United States lost due to the Bush tax cuts — and how much have top earners benefited? Working with Citizens for Tax Justice, a left-leaning advocacy group for progressive taxation, the National Priorities Project has created an online, running calculator that captures this mounting number each second. The group casts the figure as a “cost” in terms of lost government revenue, though it’s also the amount of money these individual taxpayers have saved.

(Source: National Priorities Project)