The purpose of this paper is to examine the customs duty to support rice productivity in the ASEAN Member States (AMS). This study uses a qualitative method. The results showed that the customs duty had supported rice productivity in AMS. The rice productivity in AMS has been improved supported by the competitiveness of domestic rice products and and supports the welfare of rice producers. Custom duties or imposition of rice tariffs protect the competitiveness of domestic rice, and maintain domestic rice price stability and encourage producer surpluses. Producer surpluses support motivation in rice farming, and support consistent increases in rice production. AMS that imposes tariffs on rice, namely: Cambodia, Indonesia, Lao PDR, Malaysia, Myanmar, Philippines, Thailand and Vietnam. The imposition of customs duties in ASEAN is based on ad valorem tariffs. AMS that imposes relatively high tariffs on rice are Malaysia and the Philippines.