Hello Mahesh,
The NITs fee structure includes tuition fees, one time admission fees, hostel fees, mess charge along with other charges.
To check the fee structure of several NITs, refer to the link given below -
https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/articles/nits-btech-fee-structure/amp&ved=2ahUKEwi3wJH8xbLnAhW3zzgGHR1SBqQQFjAAegQIAhAB&usg=AOvVaw2qyEa5wvDHRcJeQpPFS8dc&cf=1
Good luck,
Hope it helps :)
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