The Ca-II ion of the title complex, [Cu(SCN)(C8H20N4)](2)-[Ca(NCS)(4)(H2O)(2)]. 2H(2)O, is situated at an inversion center. The coordination geometry around the Cu-II ion is a symmetrical square pyramid with the tetraamine N atoms equatorial and thiocyanato S atom axial. The four donor N atoms of the macrocyclic ligand form a buckled plane, with the Cu-II ion lying 0.553(1) Angstrom out of this plane towards the thiocyanato soup. Hydrogen bonds between the water molecules and thiocyanato groups help stabilize the crystal structure. A water molecule binds the Cu-II complex and the Ca-II complex together through hydrogen bonds.