Dear candidate, fees for General and OBC is same in NIT Trichy. Fees is different a bit every semester. If we talk about B.Tech then in 2020-2021 fees was:

Sem 1= Rs 1,03,450

Sem 2= Rs 62,500

Sem 3=Sem 4= Rs 73,150

Sem 5=Sem 6= Rs 72,550

Sem 7= Rs 73,750

Sem 8= Rs 70,750

For more details and to see the fess in other courses of NIT Trichy, you can check given links:

https://www.nitt.edu/home/academics/fee_details/Fees-Odd-Sem-2020-21-Covid-19.pdf

https://www.nitt.edu/home/academics/notices/Fees-Even-Sem-2020-21-Covid-19.pdf