Who's taking my money?!

[DVX BELLORVM]

I can only conclude that whoever programmed this routine never took a book-keeping course and that whoever tested it couldn’t do simple math, as quite literally it doesn’t add up.

Since I didn't find any sense in all those figures, I tend to agree with your conclusion.

Given the importance placed upon money in the game I would have thought that the accuracy of these financial reports would be a high priority. I certainly think the End of Turn Financial Report needs to be as detailed as the Financial Overview so that it can justify the figures it is quoting, and most important of all the Treasury balance needs to be a product of the income and expenditure rather than an arbitrary figure apparently plucked out of thin air.

IIRC, the Financial Report at the End of a turn in RTW was more detailed, and the Financial overview pretty accurately predicted your future treasury (if something unexpected didn't happened, of course).

As far as your 11,000 florins of recurring tribute is concerned, this seems to be a bug, as from what you've said you are not entitled to receive any tribute and probably aren't.

That is correct.