In the crystal structure of the title salt, C(10)H(16)N(+)·H(2)PO(4) (-)·H(3)PO(4), the H(2)PO(4) (-) and H(3)PO(4) components are connected into infinite chains extending along the b-axis direction by way of O-H⋯O links. These chains are also linked through O-H⋯O hydrogen bonds thus building up a supra-molecular two-dimensional framework extending parallel to (001). The organic cations cross-link the anionic layers by way of multiple N-H⋯O inter-actions, leading to a cohesive network.