FDIC Proposes 'Rapid Processing' and Strict Timelines to Streamline Bank Mergers

For a bank merger to clear regulatory hurdles without stranding capital in months of limbo, the reviewing agency must commit to a hard deadline. Until now, the Federal Deposit Insurance Corporation operated without one, allowing some midsize acquisitions to languish for over a year. That constraint is set to lift following a unanimous vote by the FDIC board on September 17, 2026, to codify a strict timeline framework for merger reviews under the Bank Merger Act.[1][2]

The proposed rule introduces a tiered processing track designed to match the regulatory burden to the actual risk profile of the merging entities. At the fastest end of the spectrum, the FDIC will establish a "rapid processing" framework for de minimis transactions. These deals, defined as acquisitions of extremely small targets or certain types of operating subsidiaries, will require only a streamlined letter filing. Unless the U.S. Attorney General objects on competition grounds, these minor transactions will be deemed approved in as few as five business days, bypassing the traditional public comment period entirely.[1][4]

For standard transactions, the proposal imposes rigid statutory clocks that replace the open-ended evaluations of the past. Once a bank submits a merger application, the FDIC will have exactly 21 days to provide a written explanation of any missing information required to render the filing complete. If the agency fails to deliver that notice within the three-week window, the application is automatically deemed substantially complete, officially starting the review clock.[2][3]

From that start date, the size of the resulting institution dictates the deadline. Transactions that produce a combined bank with less than $50 billion in total assets will be subject to a 90-day standard processing period, provided the deal does not hinge on concurrent approval from another federal regulator like the Federal Reserve. All other standard transactions will face a 150-day processing window. While the FDIC retains the right to extend these timelines in extenuating circumstances, the extensions are strictly capped at a maximum of 180 days and 270 days, respectively.[1][3]

Beyond the calendar, the proposal fundamentally rewrites the mathematics of the FDIC's antitrust evaluations. Historically, the agency's competitive effects analysis measured market concentration by looking almost exclusively at deposits held by competing commercial banks. The new framework will formally incorporate the market share of tax-exempt credit unions and thrifts into the initial Herfindahl-Hirschman Index (HHI) screen. By expanding the denominator to include these nonbank competitors, the mathematical concentration of any given bank merger naturally decreases, making it easier for acquiring institutions to clear the initial antitrust thresholds.[1][4]

The rule also addresses the treatment of centrally booked deposits—funds that are not geographically tied to a specific physical branch based on the depositor's location. By factoring a representative portion of these deposits into the competitive analysis, the FDIC aims to reflect the reality of digital banking, where local branch density no longer dictates a bank's true market power. For transactions resulting in an institution with more than $50 billion in assets, the agency will also add explicit "fair banking" considerations to its evaluation of how the merger meets the convenience and needs of the community.[1][2]

The push to codify these timelines follows an internal FDIC initiative that has already accelerated approvals behind the scenes. According to FDIC Chairman Travis Hill, the agency reduced its average processing time from 107 days across 2023 and 2024 to 80 days in 2025, and further down to just 64 days year-to-date in 2026. The new rulemaking is designed to make those efficiency gains permanent, ensuring that future administrations cannot quietly revert to the protracted review schedules that previously frustrated the industry.[2][4]

"A long process is damaging in many ways," Hill stated during the September 17 board meeting. "It creates uncertainty for employees and customers, it constrains long-term planning and investment, it makes post-merger integration more challenging and costly, and it potentially leaves the merging entities (particularly the seller) in a vulnerable position." He noted that between 2022 and 2024, the FDIC took more than a year to approve three separate mergers involving institutions with between $10 billion and $50 billion in assets.[2][4]

The banking industry, which currently comprises approximately 4,500 operating institutions, has broadly supported the modernization effort. State nonmember banks, which account for roughly 2,700 of those institutions and fall directly under FDIC supervision, stand to benefit the most from the reduced regulatory friction. The American Bankers Association quickly endorsed the inclusion of credit unions in the antitrust math, framing it as a necessary update to reflect modern financial realities.[3][5]

"ABA has long urged bank regulators to modernize outdated competition guidelines for bank mergers, and the FDIC's proposal is a step in the right direction," said Rob Nichols, President and CEO of the American Bankers Association. The FDIC board, which includes Comptroller of the Currency Jonathan Gould and acting Consumer Financial Protection Bureau Director Jonathan Paoletta, approved the notice of proposed rulemaking unanimously. The agency will accept public feedback on the framework for 60 days following its publication in the Federal Register.[3][5]