​Loot from post battle :

 The Empire: -50%

 Bretonnia : -50%

 Vampire and Vampire Coast: -50%

 Dwarf and Chaos Dwarf : -60%

 Beastmen : +10%

 Chaos Warrior : +100%

 Greenskin : +100%

 Tomb King: No change (Easy) ,-30%(Normal) , -50%(Hard), -70%(Very Hard and Legendary)

 Income from sacking:

 Bretonnia : +100%

 Chaos Warrior : +100%

 Greenskin : +100%

 Tomb King: No change (Easy) ,-30%(Normal) , -50%(Hard), -70%(Very Hard and Legendary)

 Perhaps this is why the economic of The Empire is worse than the Cathy, but one of the things I wonder about is why the Empire, the Kislev and the Cathy are all human factions, while the proportion of loot from post battle not the same?

Why are TKs the only Race whose economy changes based on difficulty?

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DarthEnderX-#6513 wrote:

Why are TKs the only Race whose economy changes based on difficulty?

Probably to make them harder on high difficulty since they have no upkeep (so you snowball way slower on high difficulty). Beastmen are probably spared from this since they are a horde faction (so far less economic buildings to spend on).

Not sure about Beastmean now that they are basically free upkeep though with more limited things to spend on.

I think more races should be like TK to be honest, battle loot and the increased frequency of battles on higher difficulties actually makes the game easier in many ways so long as you can win battles. 

There are more than 2x the # of battles on L than on normal for most starts so -50% from battle loot still results in more battle loot on L than on normal.