Trade openness contributes to the diffusion of the modern technologies embodied in imported intermediate goods, which play a central role in the economic growth of developing countries. This paper investigates the micro-economic effects of input-trade liberalization. Previous work has found positive effects of access to foreign inputs on firm performance. If the availability of imported intermediate goods yields firm productivity gains, we would also expect a positive effect of input-trade liberalization on firm export decisions. This paper contributes to this literature by looking at the relationship between changes in input tariffs and within-firm changes in export status. Using detailed firm-level data from Argentina, I demonstrate that the probability of entering the export market is higher for firms producing in industries that have experienced greater input tariff reductions. These empirical findings are robust to alternative specifications that control for other trade-policy reforms, and industry and firm characteristics.