The disadvantage of using lags of dependent variable might be that the autoregressive term creates too much persistence at the time when the economy turns and might not produce effects large enough to reflect that turn. Moreover, the lagged term might take over most of the explanatory power over other explanatory variables rendering them useless for the stress testing purposes. Lagged dependent variables were only considered in cases where it was reasonable to expect that dependent variable might (continued)
UNITED STATES
INTERNATIONAL MONETARY FUND 25
DATA Historical data on macroeconomic, financial variables, individual BHC data on Balance sheet and Income stamement Items
Project total RWAs
MODELS/ASSUMPTIONS ESTIMATION Panel regression models
Regression models on aggregate data
Constant shares
Project Income Statements
MACROECONOMIC SCENARIOS
PROJECTION
Estimate relationships between Income Statement and Balance sheet items (dependent variables) and macroeconomic, financial variables and BHCs specific variables
Project Balance Sheet (or use assumptions of balance sheet dynamics)
Common equity Tier 1 Capital ratio
horizon were used for the purposes of projecting total RWAs and income statement items (Step 2). Projections of RWAs and net income, with assumptions on dividend distribution, Basel III deductions and AOCI determined capital requirements over the stress testing horizon (Step 3). In comparison to the DFAST, asset disposals and acquisitions over time were not considered