In the title compound, [Cd(C(3)H(3)N(4)O(2))(2)](n), the Cd(II) ion, located on a twofold rotation axis, is six-coordinated by two N atoms [Cd-N = 2.368 (2) Å] and four O atoms [Cd-O = 2.300 (1) and 2.260 (1) Å] from six 2-(1H-tetra-zol-1-yl)acetate (L) ligands in a distorted octa-hedral geometry. The metal centres are connected via the tridentate L ligands into a three-dimensional polymeric structure.