This is the 400th most frequent Italian word.
alto
"Alto" in Italian means "tall" or "high" in English.
'Alta' is used metaphorically to represent a prestigious or elevated social rank.
Ha un'alta posizione nella società.
He has a high position in society.
In this context, 'alta' refers to the large or excessive amount of the tax.
L'imposta è troppo alta.
The tax is too high.
Here, 'alta' describes the physical height of the mountain, showcasing its attribute of being tall.