• The cutoff is the minimum marks that a candidate has to score to be eligible for admission .it will change year to year by the committee.

As per 2018
The IIT tirupathi gate cutoff of 2018 will be determined by a committee constituted by IIT council authority ,to be shortlist students for the admission process based on various factors such as,

• Number of candidates appear in the exam
  
• Number of seats in each course
  
• Diffculty level of GATE 2018
  
• Category of Candidates
  

• Hope this information is helpful Good luck