Phase equilibria have been derived for the isothermal section of the Ta–V–Ge system at 1500 °C (for concentrations <45 at% Ge) on the basis of X-ray powder diffraction, EPMA and TEM analyses of argon arc melted alloys annealed in high vacuum at 1500 °C up to 200 hours. Four ternary phases have been identified within the isothermal section, out of which three were characterized by Rietveld refinement of X-ray powder diffraction data. τ₁-(Ta_1−xV_x)₅Ge₃ (0.21 ≤ x ≤ 0.63) adopts the Mn₅Si₃-type and τ₂-Ta(Ta_xV_1−x−yGe_y)₂, x = 0.02, y = 0.12 was found to be a MgZn₂-type Laves phase. Detailed transmission electron microscopy (TEM) in several crystallographic directions confirmed lattice parameters and crystal symmetry of this phase and rejected the presence of any superstructure. τ₃-Ta_9−x+yV_4+x−y−zGe_1+z, x = 0.32, y = 0.51, z = 0.98 crystallizes with the Nb₉Co₄Ge-type, whereas the structure of τ₄ is not yet known. Although a MgCu₂-type cubic Laves phase is not present in the Ta–V binary at this temperature, additions of Ge stabilize this phase in the ternary system: C15-Ta(Ta_xV_1−x−yGe_y)₂, x = 0.04, y = 0.05. V₁₁Ge₈ (Cr₁₁Ge₈ type) shows a large solubility up to (Ta_xV_1−x)₁₁Ge₈, x = 0.64 at 1500 °C.