[2] His brother, Arun Kumar, is a former Member of Parliament from Jehanabad and is also the National President of the Bhartiya Sablog Party.

Kumar is also the State President of HAM (Secular) party headed by Jitan Ram Manjhi, former Chief Minister of Bihar.

[5] Kumar won as an MLA for the fourth time in 2020 Bihar Legislative Assembly election representing BHMS and defeated his nearest rival from Congress Party by 2800 votes.

[6][7] Earlier, Kumar lost the 1990 Bihar Legislative Assembly election from Makhdumpur Assembly constituency on Janta Dal ticket to Ram Jatan Sinha of Congress Party.

Anil Kumar is also the national vice president for HAM (Secular) party headed by Jitan Ram Manjhi.