Same thing here.
The listed profits appear to be false. Supply (or salary) costs appear to be about 12.5% higher than what is reported. It is very difficult to track without having the 'server-side' interface to see all the data, but using a new corporation that had no sales and one world month production, it appeared that this was the cause.
On top of that, if enterprise profits are falsely high, then the 'Enterprise Tax' would also be charging extra.
Here is an example:
An enterprise called "Good, Bad and Ugly"" say has about 500 corporations.
"The Good"
Each corporation is doing OK, but not great, and say they make about 4.5B SC$ in sales per world month (about 54B SC$ per world year).
Costs are "reported" at say 4B SC$ per world month, for a "profit" of 0.5B SC$ (or 500M SC$).
OK, so that looks pretty good, and the enterprise then would have 500 of those corporations, and would report monthly profits of about 250B SC$.
The 'Enterprise Tax' then would charge some amount, probably around 50B SC$. So, you would think that things are going reasonably OK, you are making 250B SC$ gross (enterprise) profit, then 200B SC$ net (enterprise) profit.
At six 'spins' per [earth] day, that's about 1.2T SC$ net cash increase, and you'd probably be pretty happy with that result.
"The Bad"
But, what actually appears to happen, is that "costs" are under-reported, probably from the supplies purchases (though salaries could be a factor also).
In the same case, what you would have is, the 500 corporations actually spending about 12.5% more on supplies/salaries, which would raise the "actual" costs from 4B to 4.5B SC$ per world month, and that would then equal the sales total, making --0-- profit per corporation.
Total enterprise profit would then also be --0--, but, since the enterprise falsely over-reports profits, the 'Enterprise Tax' still charges you the 50B SC$, so you end up losing that amount.
At six 'spins' per [earth] day that's about 300B SC$ losses to enterprise cash.
"The Ugly"
The difference then, between the two would be +1.2T SC$ (should have received) vs -300B SC$ (actually paid), for a total net loss of about 1.5T SC$ per [earth] day.
("..and, not as Ugly...")
In the case of 4 'spins', the numbers would just be reduced by 33% both ways, so total losses would be about 1T SC$ instead.