Project Capital Ratios Under Stress
Projects capital ratios over multiple quarters under stress scenarios (e.g., CCAR, DFAST, or custom adverse scenarios). Simulates the evolution of capital and RWA by applying quarterly earnings, credit/market losses, and RWA changes. Formula for each quarter: Capital_t = Capital_(t-1) + Earnings_t - Losses_t; RWA_t = RWA_(t-1) + RWA_Change_t; Ratio_t = Capital_t / RWA_t. Returns time series of capital ratios and identifies the minimum ratio during the stress period. Tests whether minimum ratio exceeds regulatory threshold (4.5% for CET1). Use this for regulatory stress testing, capital planning, ICAAP, and board presentations. [Tier: ENTERPRISE, Credits: 10]
Authorizations
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Body
Starting CET1 capital at beginning of stress period
85000000
Starting risk-weighted assets at beginning of stress period
950000000
Projected quarterly earnings (pre-provision net revenue) for each quarter of stress scenario
[
8000000,
7000000,
6000000,
5000000,
6000000,
7000000,
8000000,
9000000
]Projected quarterly credit/market losses (provisions, write-downs) for each quarter
[
12000000,
15000000,
18000000,
20000000,
15000000,
10000000,
8000000,
5000000
]Quarterly changes in RWA (can be negative if assets decrease or credit quality improves)
[
20000000,
25000000,
30000000,
15000000,
0,
-10000000,
-15000000,
-20000000
]