[[abstract]]This paper develops a Cournot quantity competition model to examine the effect of export tax rebate policy on export performance. The main conclusions drawn are as follows: (i) when a government raises the export rebate rate, the output of final goods for export by the domestic firm increases, while the output of the foreign competitor decreases; (ii) when a government raises the export rebate rate, the profit of the domestic firm increases, while that of the foreign competitor decreases; and (iii) the optimum export rebate rate is positive and greater than 1, indicating that the domestic government not only refunds fully the custom duties paid by the domestic firm on imported intermediate goods, but also offers export subsidies...