I'm running Beta 2, Torians in an immense/abundant galaxy with max number of enemy civs and minor civs, and minimum difficulty setting.
Tax rate: 0%
Tourism Income: 1715bc/week
Total Expenses: 900bc/week
With the above, I have an Economic Might Rating of zero. That doesn't seem right. It's as if tourism wasn't taken into account in the calculation at all.
I'm running a strategy where I have the bare minimum of built improvements per planet: 1 fertility clinic, 1 farm, 1 starport, and the rest is special improvements and improvements appropriate to individual bonus tiles. My colony rush was with colony ships at 1 million population each instead of the normal default 250 million. So, I know my setup is a little odd.