Hi, I believe I have the biggest income.
IN 3.2b, on hard with all options on normal.
It was a well planned game where I went POR -> SPA -> NED -> ENG -> SCA
and took all the economic national decisions including stuff like "hire privateers." !? I've never tried that before. I mean, you need one of the useless navy ideas: superior_seamanship, naval_fighting_instruction or sea_hawks, and you need a reasonable monarch and a privateers as advisor :wacko:
It was my first WC so I did a few mistakes, but the high income could cover up for it. I just wished I'd taken Rome much earlier and had nourished someone in position to hold Thrace with a CoT for the bospherous trade modifier.
In the end I had (among others for conversion and stability)
Afonsine ordinances (10% prod)
liquor act (3% tax)
legacy of the navigator (5% trade)
church taxes (8% tax)
dissolution of the monastories (6% tax)
gold fleet (5% tariff)
india trade co (5% trade)
dutch india (5% trade)
importation act (6% trade)
hire privateers (10% tariff, 5% trade)
British merchant navy (5% tariff)
convoy system (10% tariff)
Joint stock companies (2% trade)
Vorneredskab (10% tax)
agricultural cultivations (4% production 4% trade)
I also had the Sound Toll, 25% trade
I had national trade policy, viceroys, bureaucracy and smithian economics for another (10% trade, 25% tariffs, 20% production and 5% tax and was running constitutional republic for another 20% production. And by the way. I am at war against my trusted vassal Pommerania, and running wartaxes.