Accounting & Reporting
CECL versus Incurred Loss
Understand why an allowance now covers losses that have not happened, what a day-one loss on a good loan actually means, and why a US bank and a European bank report different numbers on identical portfolios.
- Expert
- 11 min total
- 12 chapters
What decision this helps you make: How to build, defend, and interpret a credit loss allowance under the expected loss model, and what changed relative to the incurred loss regime it replaced.
- Related case study: The Earnings That Shrank Under a Microscope
- Related data & research: Reading a Set of Accounts Like an Owner
What this topic is
Current expected credit losses (CECL, in ASC 326) requires an allowance for all credit losses expected over the remaining contractual life of a financial asset measured at amortized cost, recognized at origination. It replaced the incurred loss model, under which a loss could only be recognized once it was probable that it had already been incurred as of the balance sheet date.
Why it matters
The change moved the allowance from a backward-looking measure of damage already done to a forward-looking estimate of damage expected. That reset allowance levels across the banking system, put macroeconomic forecasting into the middle of financial reporting, and created a day-one charge on every new loan, including good ones. It also means that reading a bank's allowance now tells you something about management's economic outlook, not just about its loan book.
Who should learn it
Bank and credit union finance teams, credit risk modellers, audit committees, analysts covering financial institutions, and any company with material trade receivables, held-to-maturity securities, or off-balance-sheet credit exposures.
What you will understand
- What changed mechanically between incurred loss and expected loss, and why the timing difference matters more than the level
- The reasonable and supportable forecast period, the reversion mechanics, and where the judgement concentrates
- Why available-for-sale debt securities kept a different model, and what that asymmetry means
- How CECL and the IFRS 9 three-stage model differ, and why the two are genuinely not comparable
Prerequisites
Common misconception
"CECL just made allowances bigger." Sometimes, and for some portfolios substantially, but that is not what changed. What changed is when losses are recognized. CECL front-loads: the entire expected lifetime loss on a loan is recognized at origination, and subsequent periods recognize only changes in the estimate. A bank growing its loan book fast will report elevated provisions even with pristine credit quality, and a bank shrinking will report releases. Provision expense became a function of growth as much as of credit.