In the era of targeted therapies and immunotherapy for cancer, the focus in breast cancer (BC) research has shifted away from classical chemotherapy. Many BC patients, however, still need chemotherapy and thus benefit from the development of new chemotherapeutic agents or regimens. In the past decade, the approval of eribulin and trastuzumab emtansine (T-DM1) have been important advances in this regard. Improved ways of delivery of paclitaxel, anthracyclines, and vinorelbine have also had a considerable clinical impact. Finally, optimizing the use of well-known drugs, such as carboplatin, capecitabine, or adjuvant chemoimmunotherapy in low-risk early BC, has brought about progress in the field of chemo(immuno)therapy.