Excellent, so the entire example would be;

The Commonwealth has a Core population on Earth, with a base Tax rate of 65% and a +10% Capitalist Bonus from a trait, their Industrial Index is the default 1, they have an Economic Health of 5

Earth has an MI from Planetary type and atmosphere of 5

and the following mineral deposits

| Level | MI | Rating |

Heavy Metals | Normal | 1 | 12 |

Radioactives | Abundant | 1.5 | 17 |

Non-Metallics | Normal | 1 | 10 |

Industrial Metals | Motherlode | 2 | 28 |

for a total MI of 10.5 and a rating of 120+170+100+280=670

MI * rating gives an exploitation index of 7035

So Income works out at

Exploitation Index * industrial Index (7035*1) of 7035

So, Nominal Income is 7035

65% of that for base tax is 4573

75% of that for population adjustment is 3430

100% of that for EH level of 5 is 3430

10% of that for Capitalist is 343

For a monthly total of (3430+343) 3773

As this is actually pretty complex to work out, I'd suggest a similar example to this being included in the Income section of the rules. It would certainly have helped me figure it out without having to pester you