Formula for calculating overtaxation?

[sector24]

Thanks guys, all very good info. Using meglobob's rough estimate you can set your capital to 130% on the first turn and usually make out ok?

(Assuming you are playing a nation that gets 30 troops)
130% tax generates ~9 unrest
30 soldiers remove ~10 unrest

I frequently hear about how players overtax on the first turn for some extra cash, but I've never done it because I don't like to micromanage like that. Either that or I'm lazy. But the early extra gold might be worth changing my personal sloth scale.