The core structural tool introduced by modern bank resolution frameworks is the Bail-in mechanism. This tool reverses the old bailout model by forcing a failing bank’s shareholders and creditors to absorb losses internally, protecting public funds and minimizing taxpayer exposure.
The Debt Allocation Conversion Sequence
When a resolution authority intervenes in an insolvent institution, it writes down or converts the bank’s liabilities into equity in a strict, sequential sequence, known as the Creditor Hierarchy:
[1. Common Equity Tier 1 Shares] ---> [2. Additional Tier 1 Securities] ---> [3. Tier 2 Subordinated Debt]
                                                                                      |
                                                                                      v
[Exempted Accounts: Covered Depositors] <--- [5. Senior Unsecured Debt Lines] <--------+

By completely wiping out equity holders and subordinated bondholders before imposing hair-cuts on senior unsecured creditors, the bail-in mechanism forces investors to bear the structural risks of the institution while protecting retail depositors from financial losses.