I was charged 25% tax on an item from an overseas supplier, which was not shown on their invoice

[Decent-Sense]

I found that I was charged 25% tax on an item from an overseas supplier, which was not shown on their invoice until it arrived at PP where it was described as Tax. In Amex, which was charged, it was shown as GST (Australia). Anyone else had this issue? In Australia, GST is charged on items at the rate of 10% added to the invoice, or one eleventh of the total price. In addition, it must be disclosed on the invoice.

[kernowlass]

@Decent-Sense 

Scroll down to customs charges?

https://www.shipbob.com/au/blog/import-taxes-australia/#:~:text=To%20calculate%20customs%20duty%2C%2....