Taxes, as such, are not universally applied to all rats of Mega Burg, but some laws do exist.
One of the oldest tax laws concerns seekers who wish to re-enter the colony. When leaving through any of the gates protected by the colony’s guards they are expected to pay a “thumb” (a fifth) of any found goods when returning from their trips. These goods, most often food, are stored in the Pantry and are spent to fund projects around the colony.
Some gangs, Elders and Protectors may charge dens to pay tithes or taxes for “security”, which is very often thinly veiled extortion.