Tax n. : A charge, especially a pecuniary burden which is imposed by authority.

Tax n. : A charge or burden laid upon persons or property for the support of a government.

Tax n. : Especially, the sum laid upon specific things, as upon polls, lands, houses, income, etc.; as, a land tax; a window tax; a tax on carriages, and the like.

Tax n. : A sum imposed or levied upon the members of a society to defray its expenses.

Tax n. : A task exacted from one who is under control; a contribution or service, the rendering of which is imposed upon a subject.

Tax n. : A disagreeable or burdensome duty or charge; as, a heavy tax on time or health.

Tax n. : Charge; censure.

Tax n. : A lesson to be learned; a task.

Tax n. : To subject to the payment of a tax or taxes; to impose a tax upon; to lay a burden upon; especially, to exact money from for the support of government.

Tax n. : To assess, fix, or determine judicially, the amount of; as, to tax the cost of an action in court.

Tax n. : To charge; to accuse; also, to censure; -- often followed by with, rarely by of before an indirect object; as, to tax a man with pride.

Example:
What is the difference between an income Tax and a payroll Tax?

Taxonomy
tax return, Victims, tax relief, voluntary disclosures, credit, tax credit, Internal Revenue Service, tax breaks, Victims of the tsunami, Free tax return, tax law, American Samoa, deadline, energy efficiency, IRS Privacy, Claim, law provisions, disasters.

Defination from the web:
tax statistics, IRS information, and links to Federal tax forms.