The Federal Deposit Insurance Corporation’s (FDIC) Designated Reserve Ratio (DRR), currently set at 2%, has served as a cornerstone for maintaining the Deposit Insurance Fund (DIF) since its establishment. This long-run target is designed to ensure the DIF remains solvent during periods of severe economic stress while simultaneously aiming to prevent abrupt and destabilizing increases in assessment rates levied on banks. While the FDIC is statutorily mandated to review and establish a DRR annually, the only explicit legislative requirement is that this ratio must not fall below 1.35% of estimated insured deposits. In 2010, the FDIC adopted the 2% DRR, a decision rooted in a historical simulation and informed by the prevailing uncertainty of a financial crisis. This target has remained unchanged for over a decade.
However, after 16 years, a period marked by significant transformations within the banking industry, a re-evaluation of the analytical underpinnings of the current DRR is both timely and necessary. A critical aspect of this analysis centers on the fact that the 2010 calibration heavily relied on loss provisions recorded during a period of acute crisis. With the benefit of historical perspective, it is now apparent that these crisis-era provisions substantially overestimated actual realized losses from bank failures. This discrepancy is significant because employing overstated provisions rather than actual losses can artificially elevate the implied long-run target for the DIF. For clarity, this discussion refers to loss estimates derived from provisions, including contingent loss reserves utilized in the FDIC’s 2010 simulation. Furthermore, the original simulation drew heavily on losses experienced during the Savings and Loan (S&L) crisis, a historical event characterized by distinct banking practices and regulatory frameworks from those prevalent today, approximately four decades prior.
A constructive path forward necessitates a methodological approach rather than rhetorical debate. The FDIC should undertake and publish an updated historical simulation, employing realized, failure-year losses instead of provisions. This updated analysis should also incorporate current institutional conditions and reflect a nuanced understanding of industry changes. The original simulation framework, by its very nature, is backward-looking and deterministic. This inherent characteristic underscores the importance of regularly reassessing its calibration as new data emerges and industry dynamics evolve. The analysis must account for contemporary industry conditions, a point previously emphasized by the American Bankers Association (ABA) in its comment letters to the FDIC, which include enhanced capital, liquidity, and resolution planning requirements. Such an updated simulation would provide critical insights into whether the current DRR remains appropriate, given the wealth of information now available that was absent in 2010. Ultimately, this analysis should continue to support the FDIC’s overarching objective: to foster moderate and stable pricing for deposit insurance, without systematically over-capitalizing the DIF. This examination does not advocate for a specific DRR level but rather evaluates the performance of the existing framework when updated with more current and comprehensive data.
A crucial policy consideration is that both underfunding and overfunding the DIF carry inherent costs. A DIF that is insufficiently capitalized may necessitate the implementation of restoration plans, special assessments, or procyclical pricing adjustments during periods of financial stress. Conversely, maintaining a DIF substantially larger than required to meet the FDIC’s objectives compels banks to pre-fund potential losses that may never materialize, potentially increasing assessment burdens beyond what is necessary to ensure fund resilience and pricing stability. Therefore, the pertinent policy question is not whether the DIF should be large or small, but rather whether its target is calibrated appropriately to strike a balance between resilience, stability, and cost-effectiveness.
Understanding the 2% Designated Reserve Ratio
The DRR represents the FDIC’s long-term target for the DIF’s reserve ratio, calculated as the DIF balance divided by estimated insured deposits. It is distinct from the statutory Minimum Reserve Ratio (MRR) of 1.35%, which triggers restoration plan requirements if the DIF falls below this threshold. The FDIC’s public communications characterize the 2% DRR as a "long-range, minimum goal" intended to enhance the likelihood that the DIF remains positive even during periods of substantial losses stemming from bank failures. Furthermore, FDIC regulations stipulate progressively lower assessment rates as the reserve ratio surpasses 2% and 2.5%. The rationale behind the DRR’s formulation is significant: its level is a product of modeling and policy judgment, not a fixed statutory constant, unlike the 1.35% floor.
Rather than engaging in a conceptual debate about the merits of a long-term target, a practical approach to evaluating the continued appropriateness of the 2% DRR involves revisiting its numerical calibration using updated data and the FDIC’s established framework.
The Historical Simulation That Shaped Today’s 2% DRR
The FDIC’s long-term framework was developed around a historical simulation that examined fund loss experiences and projected income data over an extended historical period, from 1950 to 2010. The primary objective of this simulation was to maintain a positive fund balance during severe stress events while concurrently preventing sharp fluctuations in the assessments paid by FDIC-insured banks.
The FDIC’s analysis concluded that to sustain a positive fund balance and ensure stable assessment rates through significant crises within the sampled period, the reserve ratio would have needed to exceed approximately 2% before the onset of each crisis. This recommended level aimed to balance reserve adequacy with the broader policy goal of promoting steady, predictable assessments, thereby mitigating the likelihood of steep pricing increases during periods of stress. This led to the establishment of the current 2% DRR as a long-range target.
A Critical Technical Concern: Provisions Versus Realized Losses
The FDIC’s reliance on loss provisions in its 2010 calibration was a pragmatic and necessary approach at the time. During an active crisis, realized resolution losses are not yet quantifiable, making provisions the most accurate contemporaneous estimate of expected losses and, consequently, a crucial determinant of the DIF balance. In this regard, the original framework effectively reflected the best available information and the imperative to ensure fund resilience in an environment of extreme uncertainty. However, with the passage of time and the benefit of hindsight, it has become clear that a considerable portion of these provisions were subsequently reversed as realized losses ultimately proved to be significantly lower than initially anticipated.
This evolution does not imply that the original approach was flawed at its inception. Instead, it suggests that recalibrating the assessment using realized outcomes may offer a more precise estimation of the fund level necessary to achieve the FDIC’s stated objectives, without the potential for overestimation stemming from provision estimates that were later revised downward.
A key distinction to consider is that provisions represent contemporaneous expectations under uncertainty, whereas realized losses reflect outcomes contingent on economic performance. The purpose of re-estimating the framework with realized losses is not to suggest that real-time fund management should disregard expected losses during periods of stress. Rather, it would enable the FDIC and the public to differentiate between the pre-funding required to absorb historical realized losses and the additional buffer incorporated to account for uncertainty, estimation risk, and policy judgment.
Adding to these considerations, the DIF balance, being an accounting measure rather than a cash balance, is influenced by loss provisions as they are recorded, not solely by realized resolution losses. In this context, provisions served as the operative contemporaneous metric for expected losses. Because provisions often incorporated worst-case expectations that were later reversed, the simulation tends to suggest a larger pre-funded balance is necessary to maintain a positive fund under a policy of steady pricing. Re-estimating the historical simulation using realized failure-year losses would represent a logical extension of the FDIC’s original framework, rather than a departure from it.
These realized outcomes are shaped by macroeconomic recovery and resolution decisions made during crises, factors that warrant consideration when interpreting the gap between provisioned and realized losses. One potential limitation of solely relying on realized losses is that it could understate the tail risk observed during periods of acute stress.
Analysis conducted by the ABA highlights the magnitude of this discrepancy. According to data from the FDIC’s Quarterly Banking Profile, the DIF accumulated approximately $102.6 billion in loss provisions from the first quarter of 2008 to the first quarter of 2010, with over $99 billion accrued in 2008 and 2009 alone. Ultimately, based on FDIC data on failed banks, realized losses for receiverships established between 2008 and 2013 amounted to roughly $69 billion, with approximately $59 billion occurring between 2008 and 2010. Moreover, beginning in 2010 and continuing for 13 consecutive years, the FDIC recorded negative annual loss provisions (for both future and existing bank failures), a trend interrupted only by the events of spring 2023. Consequently, while the DIF balance must, in practice, reflect provisions, calibrating long-run funding levels based on provision patterns that are subsequently reversed may lead to an overstatement of the required reserve.
Prior to the early 1990s, loss provisions generally aligned with realized outcomes. For instance, negative provisions were recorded only twice between 1934 and 1991. Since 1992, the historical record indicates that provisions have frequently exceeded subsequent realized losses, with substantial provisions recorded during stress periods and often reversed in subsequent years. The FDIC reported negative provisions in 27 of the 34 years since 1992, consistent with a tendency to overstate losses ex ante. Whether this pattern reflects appropriate estimation under uncertainty, shifts in economic conditions, resolution outcomes, or other factors, it suggests that re-estimating the long-run calibration using the expanded body of realized experience now available would be beneficial.
Given that the 2010 DRR calibration was based on provision-based losses during an ongoing crisis, it inherently embeds conservatism into the estimated fund size required. Re-running the same framework using realized failure-year losses could yield a lower implied reserve ratio under similar assumptions, although the outcome would be contingent on the timing and clustering of losses within the simulation.
Even a partial adjustment from a provision-based to a realized loss calibration, holding all other factors constant, would mechanically reduce the required pre-crisis reserve levels. However, quantifying this effect would necessitate a re-estimation of the full simulation.
A Second Critical Concern: The Original Calibration’s Neglect of Structural Banking Changes
Beyond the issue of provisions versus realized losses, the original historical simulation implicitly relied on crisis data from a significantly different institutional landscape.
The S&L crisis is frequently cited as a key reference point in long-term fund sizing exercises. However, the structure of the industry and the regulatory environment have undergone material changes. Today’s banking system and business models are demonstrably more diversified and resilient. Post-crisis reforms, such as the Federal Deposit Insurance Corporation Improvement Act (FDICIA) and the Dodd-Frank Act, have introduced more robust capital, liquidity, and resolution planning requirements. For example, common equity capital ratios are substantially higher than pre-2008 levels. The implementation of the Liquidity Coverage Ratio (LCR) and high-quality liquid asset (HQLA) requirements has bolstered system-wide liquidity. Furthermore, resolution planning frameworks are designed to mitigate the severity of losses in the event of failure.
This does not imply that bank failures will cease to occur. Rather, both the probability and the loss severity profile associated with failures may have changed. The appropriate method to reflect these shifts is to update the empirical calibration rather than perpetuate a fixed historical target. The relevant question is not necessarily whether S&L-era losses should be disregarded, but rather how sensitive the implied reserve ratio is to loss experiences generated under vastly different institutional regimes.
Current Dynamics: The DIF Approaching 2% Faster Than Anticipated
Recent trends in the DIF’s reserve ratio provide an additional impetus to revisit the calibration. The reserve ratio has experienced a rapid increase, climbing from 1.11% following the failures in spring 2023 to 1.43% as of the first quarter of 2026. If the reserve ratio continues to grow at its recent pace, it could reach the 2% target as early as 2030. The FDIC’s own projections indicate that the reserve ratio will reach 2% by the end of 2031 under the current assessment rate schedules. These projections do not account for the potential impact of the notice of proposed rulemaking regarding lower assessment rates, published in June 2026.
These projections are a mechanical consequence of the current schedule and baseline assumptions, and they are relevant because the DIF appears to be on a trajectory toward the long-term target at a relatively swift pace. If a long-term target is set above the level implied by an updated calibration, rapid accretion could result in cumulative assessments that exceed those projected under a steady pricing path with alternative assumptions.
Collectively, these observations raise a pertinent question: how would the 2010 calibration perform if re-estimated using updated data and institutional conditions? One interpretation is that the original framework, when recalibrated with realized losses, may imply a lower long-term reserve ratio that is consistent with the FDIC’s objective of maintaining a positive fund while avoiding procyclical pricing. An alternative perspective suggests that a provision-based calibration appropriately captures tail risk and uncertainty that might not be fully reflected in realized outcomes. A third possibility is that both effects are at play, indicating that the appropriate reserve ratio ultimately reflects a policy judgment that balances the benefits of additional pre-funding against the costs of maintaining a larger fund than necessary to achieve the FDIC’s stated objectives.
Implications for DRR Calibration
The 2% DRR represented a reasonable post-crisis calibration under conditions of uncertainty, tied to a specific historical simulation and a concept of "steady, moderate" pricing. Today, the data necessary to update this calibration are readily available, rendering the reasonableness of the 2% target a question that can be reassessed within the FDIC’s existing analytical framework. The FDIC should consider publishing an updated version of the historical simulation, incorporating current data and the contemporary institutional framework. Whether this updated analysis ultimately supports retaining the current calibration or suggests an alternative would be an empirical question.
An empirical reassessment could encompass two key components: First, it would involve re-running the FDIC’s historical simulation using realized failure-resolution losses allocated to the year of failure, rather than provisions, and publishing these results alongside the original simulation to facilitate comparison. Second, it would assess whether the DRR target remains well-calibrated after accounting for updated industry and institutional conditions, including enhancements in capital, liquidity, supervision, and resolution frameworks.
Ultimately, reassessing the 2% DRR is an empirical matter best addressed within the FDIC’s established framework rather than through abstract conceptual debate. Re-estimating the historical simulation using realized failure-year losses, coupled with an analysis that reflects modern regulatory and industry conditions, would provide a transparent basis for evaluating whether the current target remains appropriately calibrated to the FDIC’s stated objectives. Such an exercise may indicate a different reserve ratio under unchanged assumptions, or it could reinforce the current target. In either scenario, it would ensure that the DRR reflects observed loss experiences and current conditions, rather than legacy assumptions. Aligning the long-term target with updated evidence would advance the FDIC’s dual goals of maintaining fund resilience while avoiding unnecessarily elevated or procyclical assessment burdens.
Patrick Mitchell is head of economic policy research at the American Bankers Association (ABA). He previously served as director of the Federal Deposit Insurance Corporation’s Division of Insurance and Research.
Brittany Kleinpaste is a Vice President for economic research at the ABA.
