I'm really struggling with my budget. I think the solution may be on the revenue side, as my expenditures are quite minimal.

The taxes collected obviously depend on the tax rate, but what else? Do they depend on population or jobs? Do they depend on land value?

What is the formula?

I'd be satisfied with the residential formulas, or even conversion ratios (1 rich sim = x poor sims)

I took an entire tiny map population of poor uneducated sims from low density, to medium density. Even though the population more than doubled (6k to 14k), my residential tax did not go up.