In economics, the benefitive treasury measure (BTM) is an economic indicator that attempts to correlate a relationship between immigration and government tax receipts/government spending; put more simply, it is cost-benefit analysis of immigration on a macroeconomic scale. Originally coined in a policy report by G. Ing and R. McGowan of the Liberal Democrat Policy Research Unit, it was later popularised by the BBC's Business Editor, Robert Peston, during the late-2000s recession, in reference to the British Conservative Party's proposal for a cap on inwards migration, referred to as the "immigrant cap".