Non-impairment of obligation and contracts.
CONSTITUTIONAL
International courtesy
INHERENT
Territoriality of taxation
INHERENT
Non-imprisonment for non-payment of tax or debt
CONSTITUTIONAL
Non-appropriation for religious purpose.
CONSTITUTIONAL
International comity or treaty
INHERENT
Observance of due process law
CONSTITUTIONAL
Non-diversification of tax collection
CONSTITUTIONAL
Non-delegability of the taxing power
INHERENT
Uniformity of taxation
CONSTITUTIONAL