Exaction

Noun

 * 1) The act of demanding with authority, and compelling to pay or yield; compulsion to give or furnish; a levying by force; a driving to compliance; as, the exaction to tribute or of obedience; hence, extortion.
 * 2) That which is exacted; a severe tribute; a fee, reward, or contribution, demanded or levied with severity or injustice.

Adjectives for Exaction
dictatorial; tyrannous.

Thesaurus
admission, admission fee, anchorage, blackmail, bother, brokerage, burdening, call, call for, carfare, cellarage, charge, charges, charging, claim, contribution, cover charge, demand, demand for, dockage, draft, drain, dues, duty, entrance fee, exactment, extortion, extortionate demand, fare, fee, freighting, heavy demand, hire, imposing an onus, imposition, impost, inconsiderateness, inconvenience, indent, infliction, insistent demand, laying on, levy, license fee, loading, loading down, nonnegotiable demand, notice, obtrusiveness, order, pilotage, portage, presumptuousness, rending, requirement, requisition, ripping, rush, rush order, salvage, scot, scot and lot, shot, storage, tasking, tax, taxing, tearing, toll, towage, tribute, trouble, ultimatum, unwarranted demand, warning, weighting, wharfage, wrench, wrenching, wrest, wresting, wring, wringing