[shatner]

I ran a few more numbers to determine the effects of administration from forts as well as over/under-taxing

As stated in the manual, forts offer an (admin/2)% boost to income. This boost appears to happen before any scales are factored in. Over/Under-taxing happens at the end as is a straight multiplier of the final income amount (rounded down). The scales are applied in the following order: order, production, temperature, growth. Therefore the income formula goes like this

1) floor(Population/100) = base income
2) floor(base income * (admin/2))% = F income
3) floor(F income * (order)%) = FO income
4) floor(FO income * (production)%) = FOP income
5) floor(FOP income * (temp)%) = FOPT income
6) floor(FOPT income * (growth)%) = FOPTG income
7) floor(FOPTG income * (tax rate)%) = final income

Examples:
Pop(29770), Admin(30), O/P/T/G(0,0,0,0), Tax(100%) = 341
Pop(29770), Admin(30), O/P/T/G(0,0,0,0), Tax(150%) = 511
Pop(30450), Admin(60), O/P/T/G(18,12,-15,-2), Tax(100%) = 433
Pop(30280), Admin(50), O/P/T/G(-18,12,-15,6), Tax(100%) = 311
Pop(30480), Admin(60), O/P/T/G(18,-12,-15,6), Tax(100%) = 368