<p>The recently developed AlCoFeNi alloys are known as soft magnetic materials. In the current study, Al₂₅Co_(25-x)Cr_xFe_25-yNi₂₅Nd_y Compositionally Complex Alloys (CCAs) were prepared by vacuum arc melting. Four alloy versions were produced where (<i>x</i> = 0.0 or 12.5 wt pct Cr) and (<i>y</i> = 0.0 or 1 þwt pct Nd). The influence of the partial replacement of Co by Cr with or without adding Nd on the microstructure of CCAs was demonstrated. The corresponding changes in the magnetic properties were investigated. Results showed that substituting Co with Cr refined the grain size and even changed the grain morphology from longitudinal to globular shape with combined Nd and Cr addition. A little addition of Nd enhanced the soft magnetic properties. The coercivity of Al₂₅Co₂₅Fe₂₅Ni₂₅ was ≈ 0.0001 T, while that of Al₂₅Co₂₅Fe₂₄Ni₂₅Nd₁ was ≤ 0.001 T. However, introducing Cr to the lattice in Al₂₅Co_12.5Cr_12.5Fe₂₅ Ni₂₅ alloy led to structural phase transition and domination of paramagnetism, which was further improved by adding Nd<b>.</b> This study provides superior soft magnetic alloys with BCC texture and low coercivity that meet the requirements of low-magnetic field sensing applications.</p> Graphical Abstract <p></p>