December 2016
The more omega houses you build, the more neosims you'll earn every day, you have to manually collect them from the houses, unlike regular taxes there's no one building that you collect them from. The more upgraded the house the more you'll earn from the house, not sure if population of the house factors in but there's your basic answer =) I have about 14 houses, most are hardly upgraded and I earn just over 2000 neosims per day