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ad valorem

American  
[ad vuh-lawr-uhm, -lohr-] / æd vəˈlɔr əm, -ˈloʊr- /

adjective

  1. in proportion to the value (used especially of duties on imports that are fixed at a percentage of the value as stated on the invoice).


ad valorem British  
/ æd vəˈlɔːrəm /

adjective

  1. Abbreviation: ad val.   a.v..   A/V.  (of taxes) in proportion to the estimated value of the goods taxed

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of ad valorem

< Latin: literally, according to the worth

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

An executive order published by the White House on Thursday said that "certain agricultural products shall not be subject to the additional ad valorem rate of duty imposed."

From Barron's • Nov. 20, 2025

There will also be a 1% ad valorem tax based on sales for miners that post a profit.

From Reuters • Jul. 13, 2023

To that end, about 75% of ad valorem mineral taxes collected go into the general education pool to fund districts across Wyoming.

From Washington Times • Jun. 9, 2019

The aim may have been to revive the economy but the effect, by boosting asset values, was to raise the "ad valorem" fees of mutual fund managers, hedge fund titans and the like.

From Economist • May 1, 2018

Taxation shall be by uniform rule and ad valorem.

From Constitution of the State of North Carolina and Copy of the Act of the General Assembly Entitled An Act to Amend the Constitution of the State of North Carolina by North Carolina