Currently TNEA 2018 counselling fee payment is going on, which started from 21st July. After that choice filling will start from 25th.

The academic counselling round schedule is different for candidates securing different marks. For marks upto 150, counselling round is 3.

Round 3 schedule : https://www.tnea.ac.in/appround/ChoiceApp/webpdf/R3.pdf

Official website : https://www.tnea.ac.in/appround/ChoiceApp/login.php

Hope this helps.

Good luck.