The state therefore draws its principal revenues from the imposts, the taxes and the monopolies.
One-tenth of the tax is paid to the communes as compensation for revenues made over to the state.
Had had to make with the different nations special arrangements which were valid for five years only, and by which he renounced the revenues of vacant benefices.
A truce was concluded in 1317, but as the Sicilians helped the north Italian Ghibellines in the attack on Genoa, and Frederick seized some Church revenues for military purposes, the pope (John XXII.) excommunicated him and placed the island under an interdict (1321) which lasted until 1 335.
He had accumulated an immense private fortune, possessing in addition to his see the revenues of seven abbeys.