In a rejoinder to Arun Kumar ("Measuring Illegal Outflows from the Indian Economy: Some Methodological Issues", EPW, 29 September 2012), who felt that the paper "An Empirical Study on the Transfer of Black Money from India: 1948-2008" (EPW, 9 April 2011) suffered from definitional and methodological fl aws, the author clarifies some basic issues related to the methods used to estimate illegal capital fl ight or illicit fi nancial flows.