These are Happiness Rate and Tax Rate!
Your Happiness Rate is crucially important to keep at 100% to show that your population remains happy by "listening to their needs and providing Services".
100% Happy Makes More Tax Money! |
This means by keeping stinky factories and infrastructure away from residential areas whilst also providing enough Fire, Police, Medical, Park, Sewage, Waste, Water and Electricity to placate every Sim.
As long as you have 100% Happiness Rate this means you qualify for the highest level of Tax Rate, which is worked out based on a combination of your Population versus your Happiness Rate.
The lower you let your Happiness Rate slide downward then the lower Taxes you can earn.
20% Is The Highest Tax Rate in SimCity BuidlIt |