How much do 12th board scores affect IIM shortlisting and selection?

12th board scores significantly affect IIM shortlisting at IIM Ahmedabad, IIM Bangalore, and IIM Lucknow, with 80%+ generally needed for competitive shortlists. IIM A at Rs 27.5L fees for Rs 35.22 LPA gives the highest weight to academics—a 73/77/81 profile struggles even with 99+ CAT. IIM B at Rs 26.2L for Rs 34.88 LPA and IIM L at Rs 22L for Rs 32.3 LPA also weight 12th heavily. IIM Calcutta at Rs 27L for Rs 34.23 LPA is the friendliest to lower 12th scores—composite formula gives more weight to CAT post-call. For 73% in 12th, target IIM C, IIM K, IIM I, and Tier-2 calls. For 80%+ in 12th with 9+ CGPA in UG and 90%+ in 10th, all IIMs remain accessible with 99+ CAT. Diversity bumps: female candidates get +3-5 effective percentile, non-engineers get +3-

1. OBC cutoff is ~10 percentile lower than general, SC/ST is ~20-25 percentile lower, EWS is ~5-8 lower. If 12th is weak (below 75%), compensate with exceptional UG (9+ CGPA), strong work ex in reputed firms, certifications like CFA or CA, and 99+ CAT. IIM C remains the realistic Tier-1 target. For 80+ in 12th with decent other acads, do not over-worry—scores are just one input among many. Check your eligibility at collvera.com/eligibility