  The dark matter relic density being a powerful observable to constrain models
of new physics, the recent experimental progress calls for more precise
theoretical predictions. On the particle physics side, improvements are to be
made in the calculation of the (co)annihilation cross-section of the dark
matter particle. We present the project DM@NLO which aims at calculating the
neutralino (co)annihilation cross-section in the MSSM including radiative
corrections in QCD. In the present document, we briefly review selected results
for different (co)annihilation processes. We then discuss the estimation of the
associated theory uncertainty obtained by varying the renormalization scale.
Finally, perspectives are discussed.
