The most important regulations of the World Trade Organisation (WTO) on trade in services, including banking, are enunciated in the General Agreement on Trade in Services (GATS). According to this agreement, under the accession process, members could follow trade liberalization based on their economic and legal conditions. Accordingly, they should present their commitments under GATS in the schedule of specific commitments. Iran as an observer member should take the necessary steps for developing the aforementioned schedule, as well. Hence, in this article based on a general survey on Iran legal system and identifying its incompatibilities with the principles of GATS, a schedule of specific commitments on banking services is presented. Achievements of this study can assist regulators and negotiating team of Iran in the accession process to WTO and promote the necessary coordinations with the regulations of this organization in the banking services.