ECB 2026 geopolitical risk reverse stress test: Exercise highlights some weaknesses in banks’ stress-testing frameworks

Reverse stress tests of this kind sit in the ECB's supervisory toolkit alongside the regular EBA-led exercises, but they carry no pass-fail capital trigger: the output feeds the SREP dialogue and qualitative findings rather than mechanical Pillar 2 add-ons, so the direct capital read-through for named banks has historically been limited. The reverse format, starting from a prescribed level of capital depletion and asking banks to identify the scenarios that produce it, is designed precisely to expose weaknesses in internal scenario design and risk appetite frameworks, which is what this finding describes. The geopolitical theme follows a pattern of supervisors broadening stress scenarios beyond conventional macro-financial shocks, and past exercises of this type have tended to resurface as follow-up supervisory expectations and thematic reviews rather than as immediate capital actions. Worth noting is the distinction between framework criticism, which lands on governance and model risk, and shortfall findings, which would land on capital; this is the former. The follow-ons are the individual bank feedback letters, any SREP score adjustments in the next cycle, and whether the thematic findings get folded into the design of the next industry-wide exercise.