This article reconciles the use of two different marginal cost-of-funds (MC
F) measures by resorting To alternative marginal benefit measures. It demon
strates how the alternative MCF measures can be properly applied to two cla
ssic problems in expenditure analysis: local cost-benefit project evaluatio
n and the second best public good level question. Relative strengths of the
two MCF approaches in addressing the two problems are identified. (JEL H21
, H43).