What changed
RBI introduced Duration Gap Analysis (DGA) as an additional tool for measuring interest rate risk from an economic value perspective, moving beyond the earlier Traditional Gap Analysis (TGA) which only captured earnings perspective. Banks must now apply both DGA and TGA to their global rate-sensitive positions, including assets, liabilities, and off-balance sheet items, with currency-specific computations where exposure exceeds 5% of global totals.
What it means for you
Banks must now measure potential drops in Market Value of Equity (MVE) under prescribed interest rate shocks, though this is not an accounting loss since the banking book is not marked to market. This shift requires enhanced MIS capabilities and systems to handle modified duration gap calculations, impacting how banks assess and report interest rate risk to supervisors.
What you must do
- Implement DGA alongside existing TGA for all rate-sensitive assets, liabilities, and off-balance sheet items globally.
- Conduct test runs from January 1, 2011, to operationalize the revised framework by April 1, 2011.
- Compute interest rate risk separately for each currency where assets or liabilities are 5% or more of global totals; aggregate residual currencies.
- Adopt modified duration gap approach for DGA, grouping items under time buckets as per Appendix I.
- Ensure MIS systems can handle simplified DGA framework while maintaining supervisory reporting standards.
Who it affects
All scheduled commercial banks (excluding RRBs and LABs), Treasury and ALM teams, Risk management departments, IT and MIS divisions
What is the key difference between TGA and DGA?
TGA measures interest rate risk from an earnings perspective by focusing on Net Interest Income (NII) changes, while DGA captures the economic value perspective by estimating changes in Market Value of Equity (MVE) under interest rate shocks.
Do we need to apply DGA to all currencies?
Yes, but with a threshold: for any currency where either rate-sensitive assets or liabilities are 5% or more of the bank's global assets or liabilities, compute DGA and TGA separately. For all other currencies, aggregate them and compute on a combined basis.
Will DGA impact our reported profits?
No, the estimated drop in MVE from DGA is not an accounting loss because the banking book is not marked to market. It is a supervisory tool to indicate potential economic impact under shock scenarios.