# k-points convergence for spin polarised vs non-polarised DFT calculations

Spin-polarised calculations come at a computational cost and I tend to take ISPIN = 2 only after I'm done with a proper initial relaxation of the structure, so the k-mesh, ENCUT, and $$\sigma$$ are already converged before magnetism is accounted for. Is this approach alright?

Does spin-coupling affect the k-mesh (or $$\sigma$$) convergence?

1 Spin polarization needs to be open (ISPIN=2) at structure relaxation.