Australian gay and lesbian couples are already lining up to marry in New Zealand, with marriage equality advocates estimating the transtasman ceremonies will pump tens of millions of dollars into the economy.
Parliament's legalisation of same-sex marriages has also thrust the issue back on to the Australian political agenda ahead of the September 14 election, despite opposition from Prime Minister Julia Gillard and Coalition leader Tony Abbott.
Lobby group Australian Marriage Equality intends using the New Zealand reforms to push same-sex marriage to the centre of the election campaign in a bid to force Mr Abbott to allow Opposition MPs a conscience vote and to shore up Labor support.
The Greens, who already have same-sex marriage bills before the federal parliament, will now introduce a separate bill recognising gay and lesbian marriages conducted overseas.
Marriage Equality spokesman Rodney Croome said a survey on the organisation's website indicated that more than 1000 Australian gay and lesbian couples planned to marry in New Zealand.