FCP was formed in 1948 following a split from the Forward Bloc (Marxist).
In FB(M) (today known just as All India Forward Bloc), the then party president K.N.
Joglekar opposed the alignment of FB(M) with the United Socialist Organisation of India.
He took with him units of FB(M) in West Bengal, Bihar, Maharashtra and Uttar Pradesh.
The same year, FCP(J) merged with the Communist Party of India and FCP(AM) merged with Bolshevik Party of India.