Impact analysis of effects of Fairtrade or organic certification for agro commodities are based on different pathways that pursue changes in prices, yield, net income and agricultural practices. Field studies using robust impact methods mostly register mixed results. We intend to identify possible complementarities between Fairtrade and organic standards for coffee and bananas in Peru. Since only minor output price differences are observed, and positive income effects depend mostly on yield increase due to improved input applications. Access to inputs and finance are thus critically important to enable the transition towards certified production. Impact finance may become a challenging alternative.