Tampons and pads will no longer be subjected to a 10 per cent tax from New Year's Day.

The federal government on Monday signed the determination that will remove the GST on feminine hygiene products from January 1 following public consultation.

Items that will be GST-free include tampons, disposable and reusable menstrual pads, menstrual cups, panty liners and period or leak-proof underwear.

It comes three months after the states and territories unanimously agreed to ditch the tax on women's products, despite the expected $30 million cost a year.