"BJP national executive supported the implementation of GST. They should talk to traders & businessmen in their own party," he said in a tweet.
Chidambaram also said the BJP national executive's support to demonetisation is "utter contempt of public opinion".
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In its national executive, the BJP adopted a six-point agenda, including one on praising the rollout of the GST which led to "one nation, one tax".
It claimed the NDA government had "delivered" on its promise of corruption and black money, adding that demonetisation, a move which invited sharp criticism from the opposition, "broke the backbone of the black market as well as the black money hoarders".