[16][7] In 2011, Southern Samity created history as they became the first club after Behala Youth in 1975 to reach the prestigious IFA Shield semi-final on debut.

[20] Southern Samity participated in the 2013 I-League 2nd Division[21] and moved to the final round, where they achieved sixth position.

[23] In 2016, Southern Samity appointed Amit Sen as their new head coach and participated in the 2016–17 I-League 2nd Division,[24][25][26] where they achieved success and qualified for the final round.

[28] In 2020,[29] Southern Samity reached the quarter-finals of the IFA Shield before losing 0–1 to I-League side Real Kashmir.

[39][40] On 23 August, Southern Samity was deducted six points by IFA and also handed two losses which includes their forfeited match against United Sports,[41] and were relegated to the Premier Division B.

[42][43][44] Southern Samity used Rabindra Sarobar Stadium in Lake Gardens,[45] Kolkata, as their home ground for matches of both the I-League 2nd Division and Calcutta Football League.