Mloomis2504 is the person we should thank for actually starting to compile this information. He was featured in the Tank Boom podcast for his efforts getting actual earnings for premium tanks in game. As it turns out, EU server also has a deep interest in this. I've attached a copy of the current earning coefficients for all vehicles in-game along with the link to the entry form where you can enter your earnings to better track these coefficients. Say it with me, THANK YOU MLOOMIS!
The following numbers are actual for 2.1 patch <---Link to EU Source
Also, they added the lower tier info as well
TL : DR : Best Premium earner is the Lowe, best non-premium is the Churchill Gun Carrier followed by Pz.Kpfw. III/IV. Also, notice the Independence earns .02% more than regular T34
Edited by putnamJavi, 18 September 2015 - 07:33 PM.