Constitutional bodies are important bodies in India that derive their powers and authorities from the Indian Constitution. 

• They are specifically mentioned in the Constitution, meaning they have dedicated articles. 

• Any change in the mechanism of these bodies would require a constitutional amendment. 
• Important bodies such as the Finance Commission, the UPSC, the Election Commission, the CAG, National Commissions for SCs and STs, etc. are constitutional bodies. 
• Finance Commission is non-permanent constitutional body. 

Source: Laxmikanth