One-tenth of the tax is paid to the communes as compensation for revenues made over to the state.
But in communes the revenues of which exceed 120,000, the budget is always submitted to the president of the republic. The ordinary revenues include the produce of additional centimes allocated to communal purposes, the rents and profits of communal property, sums produced by municipal taxes and dues, concessions to gas, water and other companies, and by the octroi or duty on a variety of articles imported into the commune for local consumption.
The state therefore draws its principal revenues from the imposts, the taxes and the monopolies.
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.
