Has anyone found the tax income calculation yet...cuz im stuck!

[EbasGamer]

I have tried to crack this calculation but have failed but at some times almost got it.

1. 1% of Happiness increases Tax Rate by 0,2%. 
2. I tried dividing the population over my level times 20%, almost got it.
3. Tried using the overall total population boosted my special buildings. Came short!

Has anyone cracked it yet cuz I'm starting to think EA is robbing us.

While writing this I came with an idea to make more money that EA can develop- the ability of the NeoBank or (even create a "City Bank") to take money and invest it so that the mayor can earn interest just like in real life.

[Florandria]

Hi, I've never tried to calculate the tax income in detail,

but based on the amount shown in the game,

I personally believe it is calculated from our "BASED population" (ignoring boosts from specialization) 

You may try to put all specialization in your storage and recalculate again