“Now, the State Department interim rule just raised the fee for renunciation of U.S. citizenship to $2,350 from $450. Critics note that it’s more than twenty times the average level in other high-income countries. The State Department says it’s about demand on their services and all the extra workload they have to process people who are on their way out. Apparently, dual citizens in Canada trying to shed their U.S. citizenship have created a backlog at the U.S. consulate in Toronto that stretches into the third week of January 2015. A decision to expatriate should never be taken lightly. Taxes or not, it can be a big step. And around the world, more people are talking about taking it.”
http://www.forbes.com/sites/robertwood/2014/08/28/u-s-hikes-fee-to-renounce-citizenship-by-422/