ad valorem
adjective
FINANCE,TAXukusan ad valorempayment,rate, ortaxiscalculatedaccordingto thepriceof aproductorservice,ratherthan at afixedrate:
Companiesreceivesubsidiesin theformofsimplead valorempaymentsbasedon thesizeoftheirexportsales.
Wethinkanad valoremtaxis thebestbecause everytimethepricegoes up thetaxgoes up.
Some would say thatimposinganad valorumtariffwould belikelyto beinflationary.