Dear student,

There is no participation fees in josaa counseling.
In josaa counselling, you have to only give the seat acceptances fees and a new type of fees introduced this year that is - Partial admission fees ( for retaining the seat).

Now, participation fees is only taken in csab special round counseling.
And it gets adjusted in your alloted institute by deducting a processing fees of Rs.1500 ( as pee buisness rules of csab 2019 special round counselling ).
So, that means if you give Rs. 16500 as participation fees, then Rs. 15000 ( after deducting Rs.1500 ) will get adjusted in the fees of your alloted institute.

Also check out the page 11 of csab buisness rules 2019 as the buisness rules of 2020 is not released yet :-
https://csab.nic.in/CMS/Handler/FileHandler.ashx?i=File&ii=138&iii=Y