CCAR and CECL are two different tools that end up pointing at the same number on a bank’s balance sheet. The Comprehensive Capital Analysis and Review is a Federal Reserve stress test that checks whether the largest U.S. banks hold enough capital to survive a hypothetical deep recession. The Current Expected Credit Loss standard is an accounting rule that requires banks to estimate losses over the full remaining life of every loan the day it goes on the books. They have different authors, different purposes, and different time horizons, but CECL’s loss estimates feed directly into CCAR’s projections, and that interaction has made capital requirements for large banks tighter and more volatile than either framework would produce on its own.
What CCAR Is
CCAR is the Federal Reserve’s annual assessment of whether the largest bank holding companies, savings and loan holding companies, and intermediate holding companies of foreign banking organizations can keep lending through a severe downturn. It is codified in the capital plan rule at 12 CFR 225.8, and covered banks must submit detailed capital plans each April projecting revenues, losses, reserves, and capital over a horizon of at least nine consecutive quarters.1eCFR. 12 CFR 225.8 – Capital Planning and Stress Capital Buffer Requirement
The program applies to institutions with $100 billion or more in total consolidated assets. The threshold was raised from $50 billion by the Economic Growth, Regulatory Relief, and Consumer Protection Act of 2018.2Board of Governors of the Federal Reserve System. Amendments to Capital Planning and Stress Testing Requirements Each year the Fed publishes a baseline scenario and a severely adverse scenario containing specific paths for unemployment, GDP, interest rates, and asset prices. The severely adverse scenario does the real work: it determines how far a bank’s capital ratio could fall under stress.3Board of Governors of the Federal Reserve System. 2026 Stress Test Scenarios
The output of that stress exercise is the Stress Capital Buffer, a firm-specific capital requirement that sits on top of the 4.5% minimum common equity tier 1 (CET1) ratio. It is calculated by subtracting the bank’s lowest projected CET1 ratio during the stress horizon from its starting ratio, then adding four quarters of planned common stock dividends. The result, or 2.5%, whichever is larger, becomes the SCB.1eCFR. 12 CFR 225.8 – Capital Planning and Stress Capital Buffer Requirement If a bank’s actual CET1 ratio drops into the SCB zone, automatic restrictions on dividends and share buybacks apply.
What CECL Is
The Current Expected Credit Loss standard was issued by the Financial Accounting Standards Board in 2016 and is codified as Accounting Standards Codification Topic 326. It replaced the older “incurred loss” model, which only recognized a credit loss once it was probable and estimable.4National Credit Union Administration. CECL Accounting Standards Under CECL, banks must estimate expected credit losses over the entire remaining life of each financial asset starting the moment the loan is originated or acquired.
The estimate pulls from three categories of information: historical loss experience, current conditions, and reasonable and supportable forecasts. For periods beyond the forecast horizon, the bank reverts to historical loss rates without adjusting them for current or expected conditions. The FASB did not prescribe a single reversion method; banks can revert immediately or phase in on a straight-line or other rational basis.5FASB. FASB Staff Q&A – Topic 326, No. 2
The output is the Allowance for Credit Losses (ACL), a balance sheet reserve that offsets the amortized cost of the loan portfolio. At each reporting date, the bank compares its updated loss estimate to the existing allowance and runs the difference through the income statement as credit loss expense or a reversal.6FASB. ASU 2025-08 – Financial Instruments – Credit Losses (Topic 326) Because that expense hits net income, CECL affects both reported earnings and regulatory capital.
CECL is principles-based, so the FASB tells banks what to measure but not exactly how. Institutions can use discounted cash flow methods, loss-rate methods, roll-rate methods, probability-of-default models, aging schedules, or combinations of these. That flexibility lets banks tailor models to their portfolios, but it also means two banks with identical loan books can produce different allowances depending on their modeling choices and forecast assumptions.
How CCAR and CECL Differ
The purposes are not the same. CCAR asks whether a bank can survive a hypothetical catastrophe without running out of capital. CECL asks how much the bank expects to lose on loans it has already made. One is a forward-looking resilience test imposed by a regulator; the other is an accounting measurement embedded in the financial statements.
The authors are different. CCAR is a Federal Reserve exercise rooted in banking supervision authority. CECL is a FASB standard that applies to every entity following U.S. Generally Accepted Accounting Principles, not just banks.7Board of Governors of the Federal Reserve System. Comprehensive Capital and Analysis Review and Dodd-Frank Act Stress Tests – Questions and Answers
The time horizons diverge. CCAR projects capital over at least nine consecutive quarters using regulator-designed scenarios.1eCFR. 12 CFR 225.8 – Capital Planning and Stress Capital Buffer Requirement CECL looks across the full remaining contractual life of each loan, which can stretch to 30 years for a residential mortgage.
And the scenarios come from different places. CCAR uses the Fed’s severely adverse scenario as the benchmark. CECL relies on management’s internal forecasts and reverts to unadjusted historical loss rates once the forecast window closes.5FASB. FASB Staff Q&A – Topic 326, No. 2
How CECL Feeds Into CCAR
This is where the two frameworks collide. The Allowance for Credit Losses that a bank calculates under CECL becomes a starting input for the CCAR stress test. When the Fed models a severely adverse scenario, it projects how the ACL would move as economic conditions deteriorate. Because CECL requires lifetime loss estimates that respond to forecasted conditions, the allowance tends to spike sharply in a stress scenario as the economic outlook darkens across the entire loan portfolio at once.
That spike creates a front-loading effect. Under the old incurred loss model, provisions built gradually because losses were recognized only when they were virtually certain. Under CECL, the bank must increase its allowance the moment the forward-looking forecast turns, even if actual defaults have not yet materialized. In a stress test, provision expense surges earlier and more dramatically, dragging down projected net income and eroding the CET1 ratio faster.
The math flows directly into the Stress Capital Buffer. The SCB is driven by the gap between a bank’s starting capital ratio and its lowest projected ratio during the stress horizon. A sharper, earlier decline in projected capital under CECL widens that gap and produces a larger SCB. The effect is most pronounced for banks with large portfolios of long-duration assets like mortgages, where lifetime loss estimates are most sensitive to the Fed’s economic assumptions.
In practical terms, CECL has made CCAR results more volatile. A bank’s SCB can swing meaningfully from year to year based on changes in scenario severity, shifts in the bank’s loan mix, and how CECL’s forward-looking mechanics interact with the hypothetical downturn. That volatility is one reason the Fed is now considering averaging a bank’s stress test results over two consecutive years before setting capital requirements.8Federal Register. Enhanced Transparency and Public Accountability of the Supervisory Stress Test Models and Scenarios
Where Things Stand for the 2026 Cycle
For 2026, the Federal Reserve voted to freeze existing SCB requirements rather than update them with new stress test results. The freeze runs until 2027, when the Fed expects to have incorporated public feedback on its supervisory models before calculating new requirements.9Board of Governors of the Federal Reserve System. Federal Reserve Board Finalizes Hypothetical Scenarios for Its 2026 Supervisory Stress Test That freeze is part of a broader transparency initiative announced in late 2025 that would require the Fed to publish annual documentation of its stress test models, invite public comment on material changes, and respond to substantive feedback before implementation. The proposal would also shift the stress test jump-off date from December 31 to September 30 and publish proposed scenarios by October 15 of the prior year to accommodate a comment period.8Federal Register. Enhanced Transparency and Public Accountability of the Supervisory Stress Test Models and Scenarios Those changes are still in proposal form.
Taken together, CCAR and CECL now operate as a linked system for the largest banks. CECL sets the accounting baseline for expected losses; CCAR runs that baseline through a severe hypothetical and uses the result to size the capital cushion a bank must hold on top of its minimum. The interaction between an accounting standard built for transparency and a regulatory test built for resilience has produced feedback effects that neither framework fully anticipated, and the Fed’s current round of reforms is in large part an effort to manage them.