term:

Taxation

taxation n

1 : the action of taxing: as
a : the imposition of taxes
b : the judicial determination of costs
2 a : revenue obtained from taxes
b : the amount assessed as a tax
3 : a particular system of taxing [progressive ]

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.