Treasury below zero

[Gilrandir]

You can't go negative on buildings/recruitment, only with upkeep costs.

That is true, but how long the accumulation of "negative income" may go on if you don't cut the upkeep costs? And when it drops to, say, -1000/-2000/-3000 ... florins, will it result in anything unpleasant?

[cogre]

i have been negitive 500,000 whilst fighting a war. loyalty drops like a rock in the outlying territories, thus increasing the chance for civil war ,rebellions, or dead faction reappearing.

edit- although to be fair, this might also be a result of my shipping lanes being disrupted as well as a negitive balance.

[caravel]

I'm not sure that a negative treasury has any effect on provincial happiness. A huge treasury does bring about all kinds of "irregular accounting" and corruption vices though, if my memory serves me correctly.