What CECL methodologies are accepted by regulators?

U.S. regulators (OCC, FDIC, NCUA, Federal Reserve) accept WARM (Weighted-Average Remaining Maturity), Vintage analysis, PD/LGD (Probability of Default × Loss Given Default), Roll-Rate (migration), and Discounted Cash Flow (DCF). Institutions may use different methods for different portfolio segments.

What is the WARM method?

WARM (Weighted-Average Remaining Maturity) estimates lifetime losses by applying an annual loss rate to the weighted-average remaining life of a pool. It is the simplest CECL methodology and is widely used by smaller community banks and credit unions.

What is the vintage method in CECL?

The vintage method groups loans by origination period and tracks cumulative losses over the life of each vintage. It works well when origination volume and loss experience are stable over time.

What is the PD/LGD method?

PD/LGD estimates expected loss as Probability of Default × Loss Given Default × Exposure at Default, often combined with forward-looking macroeconomic scenarios. It is more data-intensive but offers the most granular forward-looking view.

Methodologies

CECL Methodologies Supported by CECL Express

Pick the right method per pool — fully documented and applied consistently across periods.

What CECL methods are acceptable?

Regulators allow multiple CECL methodologies provided they are reasonable, documented, and consistently applied. CECL Express supports the five most widely used methods so institutions can choose the best fit per loan pool.

Supported Methods

WARM — Weighted Average Remaining Maturity
Vintage / Cohort analysis
Probability of Default / Loss Given Default (PD/LGD)
Roll-Rate modeling
Discounted Cash Flow (DCF)

Choosing the Right Method

Match method complexity to portfolio size and data availability
Use simpler methods (WARM, Vintage) for homogeneous pools
Use PD/LGD or DCF for portfolios with rich loan-level data
Document the rationale once — re-use it every reporting period

Request a CECL Demo