In the crystal structure of [Cu(C16H26N6O3)] (NO3)(2), the metal ion lies in an elongated octahedral coordination. Only the four secondary amine N atoms of the macrocycle are bound to the Cu2+ centre which resides 0.080(1) Angstrom out of the N-4 donor plane. The coordination sphere is completed by two nitrate O atoms axially coordinated with different Cu-O distances.