Treasury gives states GST info on tampons

The states and territories have been given a Treasury calculation of how much it will cost to exempt tampons and similar sanitary products from the GST.

The federal government has completed a calculation of how much GST is collected on tampons and other sanitary products, but is not about to reveal the details just yet.

Treasurer Joe Hockey has instead passed on the information to the states and territories for their consideration amid calls for an exemption from the 10 per cent impost.

It's estimated an exemption could reduce GST revenue by about $30 million a year.