u have same limit as mine..so its easy..
see..u have 1% cap of kiwi..so 1580 kiwis..so 1580/4 = 395 rs is ur monthly cap..remember..ur extra offers that comes like currently going 5% offer on 7500rs+ wont be in this capping...means..if u spend 7500+ u r eligible for 5%..so first 2% will be counted in ur capping..rest 3% wont be counted in capping..