You may have seen some visuals move around in the past week or two, then came a small emergency "fix".
Rather than a bunch of separate files, below is an all-in-one color overview from Tier 10 down to 1 of the many credit coefficient NERFs and BUFFs throughout.
Credit for the original 2015 data goes to mloomis & putnamjavi. Forum url.
Keep an eye out for tanks & tiers that don't get repair benefits (like the tier VIII premiums), tanks that change colors, move from the top to the bottom, ...
Note the repair benefit is only listed to show which tanks got it and which didn't ... it is not factored in.
The PNG seems to render a bit odd & fuzzy. (imgur only creates a thumbnail view)
Now corrected. Enjoy the supersize ones
And, fear not, there's a PDF version available:
PS: Some low & mid tier premiums moved out of tech tree section and calculations.
Edited by acrisis, 18 April 2016 - 11:40 PM.