To ensure that systemically important financial institutions maintain a sufficient layer of bail-inable debt to support a controlled resolution, global regulators enforce strict structural metrics: Total Loss-Absorbing Capacity (TLAC) for global banks and Minimum Requirement for Own Funds and Eligible Liabilities (MREL) within the European Union.
Reconciling Regulatory TLAC Targets
The TLAC framework requires G-SIBs to hold designated layers of loss-absorbing instruments, calculated across dual corporate benchmarks:
  TLAC Evaluation Metric  |   Minimum Regulatory Threshold   |   Systemic Capital Protection Focus
--------------------------+----------------------------------+-----------------------------------------
  Risk-Weighted Metric    | 18.0% of Risk-Weighted Assets    | Loss absorption per portfolio risk
  Leverageexposure Metric | 6.75% of Total Leverage Exposure  | Raw equity backstop; limits dilution

These long-term debt instruments are structured to ensure they can be written down or converted into equity during a crisis, allowing the resolution authority to recapitalize the bank and stabilize its operations without disrupting credit markets.
 
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