Moreover, bank margins are around the average for developed economies. 8  BIS Review 11/2007  Figure 9: Bank efficiency: Cost / income rations (2005)  Source: RBNZ (for New Zealand), Standard and Poors. Based on the largest banks in each country.
1/2  BIS central bankers' speeches  Against that backdrop, we have launched a major project; the targeted review of internal models, or TRIM, as we call it. With TRIM, we want to achieve two things. First, we want to harmonise the supervisory treatment of internal models and ensure a level playing field.