The Westfield Matildas head into Friday's (AEST) clash with Japan knowing a win or draw will secure a spot in the AFC Women's Asian Cup Semi-Finals and a place at the 2019 World Cup.
Should they achieve a positive result against Japan, Australia will finish top in Group B and face Thailand in the Semi-Finals.
In Group A results overnight, China and Thailand booked their spots in the final four with wins over Jordan and the Philippines respectively.
After a big 4-0 loss to China to start their campaign, Thailand bounced back with 6-1 and 3-1 wins over Jordan and the Phillippines.
China topped Group A with three wins from three and could be a potentially tricky opponent for the Matildas if they happen to finish second.