Talk:Income and XP/@comment-6347418-20130206235856

not sure if this has been mentioned, but I noticed recently what prompts the occasional income boost of "money being found in the walls of the building". It happens at every 10% interval as you work towards the next level.

So if you're on 9% (or 19%, 29% etc) and think you're close to flicking over to the 10% (or 20%, 30%) then try and collect income from the high earners- so the cash boost will be bigger!