Cumulative renunciations Numbers renouncing US citizenship 14K 12K 10K 8K 6K 4K 2K OK 13,893 Number that have renounced since FATCA was introduced 1,426 Record number of renunciations in a single quarter 2010-MKB.3 2011 -MKB.3 2012-HKB.3 2013-HKB.3 2014-mkb.3 2015-hkb.3 Quarter of