Quote Originally Posted by Haruchai
I believe that having a Very High tax rate for some time inflicts bad vices onto governors/generals. How long does the tax rate need to be punitive for this to happen, and if the rate is reduced, how long before a new governor is considered a nice person?

It appears to have a substantial effect on the quality of heirs too. In my current Cuman campaign, because of the low resource provinces one starts with, taxation has been very high for over fifty years. Whilst Cuman khans are very good at making babies, the gene pool is a bit stagnant, as almost all heirs are deeply flawed the moment they can sit on a horse.
The bad effects of high taxation are indeed reported often, but nobody ever told me which vices one incurs. As for removal of them, I have bad news for you: there is no way you can get rid of any vice or virtue. The best you can hope for is gaining an opposite one. As for the quality of heirs: high influence helps, king that fight on the battlefield help, staying in high-taxation provinces that aren't being developed doesn't help. Oh, and winning battles always helps.