The Group of Ministers (GoM) on GST rate rationalisation will meet this week.
The panel is expected review reforms announced by PM Modi in his Independence Day speech.
The GoM, led by Bihar Deputy CM Samrat Choudhary, includes ministers from Kerala, Uttar Pradesh, Rajasthan, West Bengal, and Karnataka.
Finance ministry officials earlier briefed members on the proposal, which suggests a simplified two-slab GST structure.