Three new quaternary tantalum thiophosphates, $K_{0.18}TaPS_6,;K_{0.28}TaPS_6,;and;Rb_{0.09}TaPS_6$ have been synthesized by using reactive alkali metal halide fluxes and structurally characterized by single crystal X-ray diffraction techniques. The crystal structures of $K_{0.18}TaPS_6,;K_{0.28}TaPS_6,;and;Rb_{0.09}TaPS_6$ contain 3-dimensional open framework anions, $[TaPS_6]^{x-}$(x = 0.09, 0.18, 0.28) with the empty channel which disordered alkali metal cations, $K^+;and;Rb^+$ are located in. Crystal data: $K_{0.18}TaPS_6$, tetragonal, space group$I4_1$/acd (no. 142), a=15.874(3) $AA$, c=13.146(4) $AA$, V=3312.7(12) ${AA}^3$, K, Z=16, R1=0.0545. Crystal data: $K_{0.28}TaPS_6$, tetragonal, space group $I4_1$/acd (no. 142), a=15.880(2) $AA$, c=13.134(3) $AA$, V=3312.1(10) ${AA}^3$, Z=16, R1=0.0562. Crystal data: $Rb_{0.09}TaPS_6$, tetragonal, space group I41/acd (no. 142), a=15.893(3) $AA$, c=13.163(4) $AA$, V=3324.7(15) ${AA}^3$, Z=16, R1=0.0432.