Quarterly Journal of Economics Vol. 131, Issue 1 February 2016 View on Publisher Site HKS Authors See citation below for complete author information. Asim Khwaja Director, Center for International Development Sumitomo-FASID Professor of International Finance and Development Citation Khan, Adnan Q., Asim Ijaz Khwaja, and Benjamin Olken. "Tax Farming Redux: Experimental Evidence on Performance Pay for Tax Collectors." Quarterly Journal of Economics 131.1 (February 2016).