The design of resolution regimes for global groups has been the central theme since the global financial crisis. No model rationalized the optimal design of bail-in regimes and their welfare consequences. We do so in a model with strategically optimizing authorities and banks. We model three regimes: cooperative-SPE (Single Point of Entry), uncooperative-SPE and MPE (Multiple Points of Entry). Welfare losses in each regime depend on the degree of banks’ liabilities home bias. SPE cooperative generally minimizes losses since authorities internalize cross-country spillovers, unless groups are highly decentralized. High capital requirements by acting as discipline devise reduce losses and blur the difference between regimes. SPE has however unintended consequences: under cooperation it increases financial re-trenchment in previously segmented markets (by the same token it stimulates integration in well integrated markets), under non-cooperation subsidiarization emerges as an endogenous outcome.