All GST anti-profiteering complaints would be dealt with by the Competition Commission of India (CCI) from December 1 as the extended tenure of National Anti-profiteering Authority ends this month, an official said on Tuesday. A notification in this regard is expected to be issued by the finance ministry later this month, the official added. The National Anti-profiteering Authority (NAA) was set up in November 2017 under Section 171A of Goods and Services Tax (GST) law to check unfair profiteering activities by registered suppliers.The Authority's core function is to ensure that benefits of reduction in GST rates on goods and services and of the input tax credit are passed on to consumers by way of reduction in prices.