Will FITB's CET1 ratio fall below 9.5% in any quarter of 2026?

CET1 pre-merger is 10.8%, with a target of 10.5% post-close. The gap from 10.5% to 9.5% is 100bps of capital. FITB's $1.3B in acquisition charges, spread across multiple quarters, would consume capital but earnings generation (19% ROTCE target implies strong net income) should substantially offset. At ~$294B in risk-weighted assets, 100bps of CET1 represents ~$2.9B of capital. FITB's quarterly earnings at the guided profitability level would generate $1.5-2B+ annually. Even with $1.3B in charges, the math doesn't work for a sub-9.5% CET1 unless there's also significant unexpected losses or a dramatic increase in RWA.

The risk scenario is front-loading of acquisition charges. If FITB takes the majority of $1.3B in charges in Q1 2026, combined with final purchase accounting marks that are worse than expected, CET1 could temporarily dip. The 'subject to final purchase accounting marks and timing of one-time merger-related charges' caveat suggests management recognizes this variability. However, buybacks are already paused, protecting capital. The 10.8% starting point with 10.5% target means management expects only a 30bps hit from the merger — if the actual hit is 130bps (to 9.5%), that's a 4x overshoot that seems implausible given the marks are described as 'very similar' to expectations.

The arithmetic makes this very unlikely. CET1 at 10.8% pre-merger needs to fall 130bps to reach 9.5%. With $1.3B in charges against a ~$294B asset base, the direct capital impact is roughly 45bps. Strong earnings (targeting 19% ROTCE) would add capital each quarter. The net effect is likely a CET1 that stays above 10% throughout 2026. For sub-9.5%, FITB would need charges 3x larger than guided plus an earnings shortfall — a tail risk scenario requiring multiple simultaneous failures.

Pre-merger CET1 is 10.8%. Post-merger target is 10.5%. The math to get below 9.5% doesn't work under reasonable assumptions. Acquisition charges are $1.3B — large but manageable against the earnings stream of the 9th-largest US bank. Buybacks are paused. This is a tail risk event requiring unexpected losses well beyond guidance.

Slightly higher probability because the pro forma CET1 including AOCI is already 9.1%. If AOCI deteriorates (rising rates causing AFS losses), the including-AOCI measure could breach 9.5% even if the excluding-AOCI measure stays above 10%. However, the question likely refers to the standard CET1 ratio (excluding AOCI for stress test buffers), not the fully loaded measure. If it means the standard ratio, very low probability.

The CET1 ratio (standard measure, not AOCI-inclusive) starting at 10.8% with strong earnings generation makes a sub-9.5% outcome very unlikely. The $1.3B in charges creates roughly 45-50bps of pressure that's more than offset by retained earnings. Management's capital management has been disciplined.

10.8% CET1 with strong earnings. $1.3B charges are ~45bps impact. Would need dramatic unexpected losses. Very unlikely.

Purchase accounting marks could be worse than expected. But 10.8% starting point and paused buybacks provide significant buffer. Low probability.

Arithmetic strongly favors CET1 staying above 10%. Sub-9.5% requires tail risk event.