Italian city pays duty at 50% discount (5)

I believe the answer is:

padua

I'm a little stuck... Click here to teach me more about this clue!

'italian city' is the definition.
(I've seen this in another clue)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for padua that I've seen before include "Italian city near Venice" , "North-eastern Italian city" , "Italian city of St Anthony" , "City of N. Italy" , "City in northeast Italy" .)

I've seen this clue in The Irish Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.