<p>The role of Cu-dopant in regulating magnetic properties of Cu-doped Nd_2.33(Fe_0.93Co_0.07)₁₅B melt-spun ribbons has been reported. The Cu-dopant was doped to the NdFeB-based alloys by using the low melting temperature eutectic alloy of Nd₆₇Cu₃₃. This doping has been chosen to create pinning centers on grains boundaries thus improving the ribbons’ coercivity. The drop of saturation magnetization <i>M</i>_<i>s</i> resulted by decreasing the volume fraction of magnetic phase caused by this dopant is compensated by applying the Magnetic-Field-assisted-melt-spinning that enhances the alignment of easy axis of grains. The transmission electron microscopy images reveal the sizes of grains and the homogeneous distribution of elements inside ribbons. The X-ray diffraction patterns allow to prove the main Nd₂Fe₁₄B phase compositions, estimate the preferred crystal growth direction as well the texture of ribbons. The existence of pinning centers on grain boundaries of ribbons has been proved by using their DSC traces and virgin magnetization curves. The SQUID as well PPMS magnetization loops evaluate the impacts of Cu-dopant on the magnetic properties of ribbons. The obtained results proved the positive role of Nd₆₇Cu₃₃ in regulating the magnetic performance of doped ribbons. The current best value of energy product (BH)_max reached 17.63&#xa0;MGOe for the ribbon of Nd_2.33(Fe_0.93Co_0.07)₁₅B + 8(wt%)Nd₆₇Cu₃₃ melt-spun at the wheel speed of 15.8&#xa0;m/s in zero field. The assisted magnetic field oriented parallel to the ribbons’ surface <i>H</i>_ass// reveals the impact in aligning the easy axes of grains inside the plane of ribbons that is preferred to use this kind of ribbons in producing anisotropic bonded magnets. (BH)_max of the ribbon Nd_2.33(Fe_0.93Co_0.07)₁₅B + 6(wt%)Nd₆₇Cu₃₃ melt-spun at 15.8&#xa0;m/s in <i>H</i>_ass// = 3&#xa0;kG was 17.38&#xa0;MGOe against 13.4&#xa0;MGOe in the case without a field. The doping and ribbon processing are presented and discussed in detail.</p>