Wall Street’s biggest banks believe they are closer to a major win in the long-running battle over U.S. bank capital requirements, but significant hurdles still stand between the industry and a final rollback of the most contentious parts of the “Basel endgame” reforms. For months, large banks and their allies have argued that proposed rules would force them to hold substantially more capital—money that cannot be lent or invested—reducing market liquidity, raising borrowing costs, and constraining growth. Now, with the Trump administration’s regulatory posture more sympathetic to the industry and top officials signaling a willingness to rewrite the plan, banks see an opening. But they also know the finish line is not guaranteed.
The current moment is a convergence of three forces. First, regulators have been rethinking the capital package amid continued lobbying and warnings from banks that the original proposal went too far. Second, Republican leadership and appointees have prioritized easing regulatory burdens, arguing that U.S. rules should not exceed international standards in a way that disadvantages American institutions. Third, banks have framed the issue as a competitiveness and market-functioning problem—claiming higher capital would make it harder for them to underwrite securities, make markets in bonds and provide credit during stress.
But the path forward remains complex because capital rules sit at the intersection of financial stability, politics, and international coordination.The reforms originally stem from global Basel standards meant to reduce the risk of another crisis by requiring banks to self-insure more against losses. U.S. regulators had proposed applying tougher calculations to large banks’ trading and lending books, which many analysts estimated would raise required capital meaningfully. Even if the administration wants to soften those increases, regulators still have to navigate rulemaking processes, legal vulnerability, and resistance from officials who worry that weakening capital buffers could increase the chance of future failures and bailouts.
Timing is another obstacle. A major rule rewrite requires coordination among multiple agencies—the Federal Reserve, the Office of the Comptroller of the Currency, and the Federal Deposit Insurance Corporation—and the politics of those bodies can differ. Meanwhile, markets and lawmakers are watching closely because the U.S. banking system is still dealing with the post-2023 regional-bank shocks and with rising credit risks in areas like commercial real estate. Against that backdrop, critics argue that reducing capital requirements is risky, especially if the economy slows or if asset values fall. Banks counter that they are already strongly capitalized and that forcing more capital on top of existing buffers would unnecessarily choke credit.
Apparently, while banks feel momentum, they still face uncertainty about the final shape of the rules: how much capital increases will be cut, which business lines will benefit, whether any changes will be phased in, and whether reforms could be challenged in court or reversed by future administrations. In short, the industry may be “within sight” of victory, but it is not yet locked in. The ultimate outcome will determine how much risk large banks must absorb themselves versus how much remains in the broader financial system—and it will shape the price and availability of credit across the economy.
