FTAs have been known to have large positive effects on trade creation between member countries. However, it is relatively unexplored how much small/medium-sized enterprises (SMEs) accounted for in the trade creation due to FTAs compared to large-sized enterprises (LEs). We find that Korean FTA policies have significantly increased SMEs’ direct exports to FTA partner countries between 2005 and 2017, although the effects were as much as a half of those for LEs, which indicates a considerable LEs’ premium in the direct export effects of FTAs. We further find that the FTAs also significantly increased the indirect exports of Korean firms, i.e., the domestic input supplies through in-dustrial input-output linkage, and that SMEs have benefited more from the indirect export effects of FTAs than LEs. Considering the direct and indirect export effects together, the LEs’ premium in the total export effects of FTA is found to become smaller.