relation: https://pure.iiasa.ac.at/id/eprint/14429/ title: Basel III capital surcharges for G-SIBs are far less effective in managing systemic risk in comparison to network-based, systemic risk-dependent financial transaction taxes creator: Poledna, S. creator: Bochmann, O. creator: Thurner, S. description: In addition to constraining bilateral exposures of financial institutions, there exist essentially two options for future financial regulation of systemic risk: First, regulation could attempt to reduce the financial fragility of global or domestic systemically important financial institutions (G-SIBs or D-SIBs), as for instance proposed by Basel III. Second, it could focus on strengthening the financial system as a whole by reducing the probability of large-scale cascading events. This can be achieved by re-shaping the topology of financial networks. We use an agent-based model of a financial system and the real economy to study and compare the consequences of these two options. By conducting three computer experiments with the agent-based model we find that re-shaping financial networks is more effective and efficient than reducing financial fragility. Capital surcharges for G-SIBs could reduce systemic risk, but they would have to be substantially larger than those specified in the current Basel III proposal in order to have a measurable impact. This would cause a loss of efficiency. publisher: Elsevier date: 2017-04 type: Article type: PeerReviewed format: text language: en rights: cc_by identifier: https://pure.iiasa.ac.at/id/eprint/14429/1/Basel%20III%20capital%20surcharges%20.pdf identifier: Poledna, S. , Bochmann, O., & Thurner, S. (2017). Basel III capital surcharges for G-SIBs are far less effective in managing systemic risk in comparison to network-based, systemic risk-dependent financial transaction taxes. Journal of Economic Dynamics and Control 77 230-246. 10.1016/j.jedc.2017.02.004 . relation: 10.1016/j.jedc.2017.02.004 identifier: 10.1016/j.jedc.2017.02.004 doi: 10.1016/j.jedc.2017.02.004