The title molecule, C13H17ClN3OS+·Br-, consists of benzene and pyrrolidine rings and an S-C(NHCH3)2 group. The central C-N bond lengths in the S-C(NHCH3)2 fragment indicate partial double-bond character. Molecules are interconnected into chains by N-H...Br hydrogen bonds and the chains are linked into pairs by weak C-H...Br hydrogen bonds.