I think my biggest expense is just going out. But that encompasses things like train travel, drinks, food, games of pool and the like. I'm good at managing my money to the extent that I always have at least £150 in my bank account just in case I need it for something. Anything on top of that - unless I'm saving for something - is for whatever I need the money for. I showed some great restraint in January by managing to save up over £700 from wages to buy myself a new PC. Since then I've been a bit more liberal with my money after saving for so long.