IIT JAM does not publish a single category-wise qualifying cutoff mark for Economics (EN) the way GATE does. Instead, the conducting IIT prepares an All India Merit List based on each candidate's All India Rank (AIR), and qualification for the counselling/admission process depends on how many seats are available in each category (General/OBC-NCL/EWS/SC/ST/PwD) that cycle -- there is no fixed pass mark to clear. Each participating institute then runs its own seat allotment with an opening and closing rank that varies by institute and programme. Check the current cycle's official JAM merit-list process and each institute's seat matrix rather than looking for a "JAM cutoff mark".