Hey! 

The overall cut off for every category, whether general, OBC yeah SC differs from year to year. Last year the cut off for OBC was around 30 marks, which is not more than  82 to 85 percentile. Try to reduce 5-6 marks from general category cut off, that will give you an idea of OBC Category. 

Hi,

You can check previous year's IIFT cutoff for OBC category at https://bschool.careers360.com/articles/iift-cutoff.

I hope it helps!