The BSE@GW framework provides an important tool to investigate the electronic structure of transition metal complexes, which comes with several advantages compared to standard TDDFT calculations. Investigating systems with different degrees of mixing between MC and CT type transitions it was shown that BSE@GW delivers a more balanced description if compared with TDDFT. In steep contrast to the latter, BSE@GW gives results that are largely independent of the underlying DFT functional, provided that Hedin's equations are solved self-consistently. This behavior has been observed in other molecular systems as well. Comparing BSE@GW results with experiment and qualitative ligand field theory, it gives the ordering expected for Fe(II) complexes and the type of states for a given multiplicity.