Someone keeps changing To the wrong definition Tier 1 Ratio is Tier 1 Capital Risk Adjusted Assets RWA If someone deposits 10 and the bank lends out all 10 assuming a RWA of 90 then the bank would now have risk adjusted assets of 9 10 0 9 and it would have equity of 2 implying a ratio of 2 9 or 22 This is what I have written which I know is right Someone keeps changing it to something else