U.S. Basel III talks shift toward easing
Regulators signalled a new phase in the U.S. Basel III endgame, with indications that proposed revisions could lower capital requirements—though timing and final details remain uncertain. Changes to capital rules matter because they alter banks’ risk budgets, product economics and model constraints used in risk and trading forecasts. Observers say this is the sort of regulatory signal that should be factored into models of bank behaviour and stress testing. (bloomberg.com)
Washington’s bank watchdogs just hit reverse on a rule set that Wall Street had spent nearly three years bracing for. On March 19, 2026, the Federal Reserve, the Federal Deposit Insurance Corporation, and the Office of the Comptroller of the Currency reopened the Basel III fight with three new proposals that would modestly reduce capital across the system instead of raising it. (federalreserve.gov) Bank capital is the money a bank has to absorb losses before depositors or the insurance fund take the hit. Regulators use those buffers the way an airline uses fuel reserves: the bigger the reserve, the less room there is for extra cargo, lending, or trading risk. (occ.gov) Basel III is the global post-2008 rulebook for how much capital banks should hold against loans, securities, derivatives, and trading books. The “endgame” label refers to the last pieces of that rulebook, including market risk and operational risk, that U.S. agencies first tried to impose in July 2023. (stblaw.com) That 2023 version would have pushed the new framework down to many banks with at least $100 billion in assets, including firms well below the very largest lenders. The March 2026 rewrite pulls that back, making the new expanded risk-based approach mandatory mainly for Category I and Category II banks, which are the biggest and most internationally active firms. (sullcrom.com) The agencies also want to scrap the old “two calculators” problem for the biggest banks. Instead of running both standardized and advanced capital formulas and living with whichever number comes out higher, those firms would generally use one risk-based framework. (federalreserve.gov) The numbers are small in percentage terms but large in bank balance-sheet terms. Federal Reserve staff said the full package, including related stress-testing changes, would lower common equity tier 1 capital requirements by 4.8 percent for Category I and II banks, 5.2 percent for Category III and IV banks, and 7.8 percent for smaller banks. (bankingjournal.aba.com) One big reason is mortgages. The revised proposals would ease capital treatment for mortgage servicing and origination, which regulators said should reduce disincentives for banks to make and service home loans. (occ.gov) Another big reason is overlap with stress tests. Regulators said they want the capital framework to stop charging banks twice for some of the same risks, especially operational losses and trading shocks that already show up in the stress capital buffer. (kpmg.com) There is still a catch for many regional banks. The proposal would require Category I through Category IV firms to start recognizing most unrealized gains and losses on available-for-sale securities in common equity tier 1 capital, with a five-year phase-in for firms that do not do that now. (sullcrom.com) The politics are just as important as the math. The Federal Reserve approved the package 6-1, with Governor Michael Barr dissenting, while Vice Chair for Supervision Michelle Bowman argued that earlier requirements had constrained credit and pushed activity toward less-regulated nonbank firms. (sullcrom.com) (bankingjournal.aba.com) Nothing is final yet. The agencies set a 90-day comment period, and several legal analyses note that the proposals are still light on exact implementation dates, which leaves banks modeling multiple paths for lending, trading, and shareholder payouts at the same time. (bpi.com) (kpmg.com) That is why traders, treasury teams, and risk managers care before any rule is finalized. If the cost of holding a mortgage, a trading position, or a servicing asset changes by even a few percentage points, the bank’s internal budget for that business changes too, and so do the forecasts built on top of it. (bloomberg.com)
