Hi Jaffar,

NATA cutoff is out of 200. The calculation of NATA marks is done by adding the 12th board or HSC percentage (outof 100) with the half of NATA score. 

For example, if your NATA score is 90, then 90/2 = 45. And your HSC percentage is 60%, then your NATA cutoff would be, 45 + 60 = 105. 

If your cutoff is above 100/200, then you might get a seat in a very decent college in TamilNadu. 

All The Best