U.S. and Eurozone Banks: Cracks Beneath the Optimism

The banking systems of the United States and the eurozone look like the star pupil who has memorized the lessons of 2008. Capital is at record highs, stress tests have been passed, and bad loans are under control. But the exam questions have changed, and part of the class has started peeking at the cheat sheet of deregulation. The stability is real, but it rests on a wing and a prayer, a favorable scenario, and the hope that the commercial real estate wall of debt will somehow dissolve on its own.

The Capital Is There, but the Holes Are Counted Differently

On paper, American banks look unsinkable. In the Federal Reserve's 2026 stress test, all 32 large banks cleared a scenario that included a 39% fall in commercial property prices, a 58% crash in equities and unemployment climbing to 10%. Behind the bravado lies a far less heroic detail. The unrealized securities losses that nearly sank Silicon Valley Bank in 2023 have not gone away. According to the FDIC, they stood at $326.7 billion at the end of the second quarter of 2026. That is down from the $688 billion peak but still an astronomical sum. These are not "paper losses that don't matter." They are frozen capital that cannot be turned into liquidity quickly without locking in a loss. Notably, unrealized losses actually rose 6.2% in the first quarter of 2026, to $325.1 billion, breaking a four-quarter run of declines. With the ten-year Treasury yield holding above 5%, and reaching 5.35% in October 2026, its highest since 2002, the gap between old, low-yielding portfolios and new market rates is squeezing banks' ability to build capital organically.

The CRE Wall: Concrete That Won't Get Cheaper

The central question is what to do about commercial real estate, not credit cards. Roughly $1 trillion in U.S. CRE loans comes due through 2027, and much of that debt will be refinanced at rates far higher than those at which the properties were bought. Offices are no longer merely a "risk zone." According to Trepp, the delinquency rate on office CMBS loans hit 11.91% in July 2026, and close to 15% on some measures. Among the troubled assets are an office tower in Chicago and an office portfolio in Seattle, both of which have become nonperforming loans past their maturity dates. Ironically, the "stabilization" that followed the 39% price collapse is no return to normal. It simply locks in a new, lower base. Regional banks whose CRE concentrations exceed 300% of risk-based capital are in the position of a homeowner who must sell an apartment bought at the peak to pay off a mortgage at today's interest rate. Europe's picture is milder but not cloudless. Nonperforming loans at large eurozone banks hold at around 2%, while Stage 2 loans, CRE included, run into the hundreds of billions of euros.

The Regulatory Pendulum Swings the Wrong Way

The lesson of 2008 was simple: more capital, more liquidity, more stress tests. Today the pendulum is swinging back. Deregulation in the U.S. and the U.K. will let those countries' largest banks expand their assets by a combined $2.9 trillion, while tighter capital requirements for the EU's seven largest banks will shrink their balance-sheet capacity by €1.3 trillion. In the U.S., looser rules allow giants such as Goldman Sachs to cut their common equity Tier 1 ratio from 15.1% to 13.3% and grow their assets. That is not necessarily bad, since excessive requirements do constrain lending. The problem is that the easing is happening just as risks have not disappeared but migrated to less transparent corners of the market. Private credit, which has grown outside the bank regulatory perimeter to an estimated $1.5 to $2 trillion according to the FSB, is already showing strain. In 2026, HSBC booked an unexpected $400 million loss tied to the collapse of the British mortgage lender Market Financial Solutions. The key question is who will run for the exit first if private credit funds all demand liquidity from their bank lenders at once, given that retail investors already hold about 13% of assets under management in this segment.

Geopolitics Hits the Weak Spots

In 2026 the eurozone got a reminder that geopolitics is not an abstraction from a textbook. It means higher energy prices, inflationary pressure and supply chain disruption. Financial conditions have tightened and risk premiums have risen. The ECB warns explicitly that, in an adverse scenario, weak growth and high inflation would undermine borrowers' ability to service their debts, leaving banks with a growing pile of bad loans. The aggregate CET1 ratio of large eurozone banks stands at about 16.2%, and the NPL ratio at about 2.2%. These are objectively solid figures, but they measure past shocks, not future ones. The regulator now requires banks to define geopolitical scenarios that could cut CET1 by at least 300 basis points. That is no theoretical exercise. It is an admission that the old risk model no longer works. Cyber threats and operational resilience are becoming just as important as capital adequacy, and here the vulnerability does not always show up in the numbers.

What Lies Ahead

The stability of the U.S. and eurozone banking systems today is not the absence of problems but the ability to postpone them. Stress tests show survival in a scenario that has not yet arrived. They do not cancel out the $1 trillion of CRE refinancing, the $326.7 billion of unrealized losses at American banks, or the growing dependence on private credit, which no one really knows how to value in a crisis. If rates stay high for longer than banks expect, and geopolitics keeps throwing energy and trade shocks into the mix, the "unshakable" armor may prove thinner than the press releases suggest. Regulators' optimism is justified only until someone starts testing it.