The Government's warming to the idea of a loyalty scheme that ensures New Zealanders take the bulk of shares when state owned enterprises are partially privatised.
The Treasury has already sent staff to Queensland to look at the loyalty scheme used when the state sold its rail interests.
The Prime Minister says a loyalty scheme is now one of the issues officials are looking into.
"There is some appeal I think in allowing New Zealanders if they do buy shares to have a loyalty bonus for holding onto their shares for longer."
Mr Key says no final decisions have been made yet.