Here is some information on WET available from the ATO website:
Wine equalisation tax (WET) is a value-based tax that is applied to wine consumed in Australia. It applies to assessable dealings with wine (unless an exemption applies) which include wholesale sales, untaxed retail sales and applications to own use. The WET rate is 29% of the wholesale sale value.
WET applies to the following alcoholic beverages:
- grape wine, including sparkling wine and fortified wine
- grape wine products such as marsala, vermouth, wine cocktails and creams
- other fruit wines and vegetable wines, including fortified fruit wines and vegetable wines
- cider and perry
- mead and sake, including fortified mead.
Generally, WET is included in the price for which retailers (including bottle shops, hotels, restaurants and cafes) purchase the wine. The WET forms part of the retailer's cost base and is passed on in the retail price of the wine to the end consumer. The Tax Office administers and collects WET for the Australian domestic market. Customs administers and collects WET on imports.
For more information visit the ATO Website