A Kohlberg Kravis Roberts-led consortium pursuing Australian retailer Coles Group is considering partnering with a listed company in its bid, which could make the offer more tax efficient for Coles shareholders.

KKR is facing a potential bidding war with conglomerate Wesfarmers for Australia's second-largest retailer, which has offered A$19.7 billion (US$16.4 billion) in a combination of cash and scrip.