User blog comment:RemosPendragon/Imperial Worlds - Tithes and stuff/@comment-24579946-20150531184705/@comment-8395098-20150531232113

it's already confirmed that this list is off.

materials are certainly part of the tithe,

while forgeworlds have no tithe to the imperial guard, they are actually required to put forward a material tithe as part of the treaty of terra. also often inquisitors investigate worlds more often concerning material tithes than IG tithes. IG tithes when failed are fairly obvious and not easy to hide and thus get adeptus terra knocking on the lord governor long before the inquisition needs to take a look.