"There will be a market reaction either way," said Imre Speizer, senior market strategist at Westpac. "An exit would see a significant 'risk-off' reaction in commodities, equities, the kiwi and the Aussie. If they stay, the opposite will happen, although the upside will be smaller than the downside."
Speizer said some traders had made specific bets that Britain would vote to leave the EU "and all those bets, when proven wrong, will have to be unwound". The response from a Bremain vote was likely to be very short-term.
The local currency fell to 95.04 Australian cents from 95.52c on Monday after the release of the minutes to the Reserve Bank of Australia's last policy meeting, which showed no strong mood to cut interest rates again.
The kiwi slipped to 4.6462 Chinese yuan from 4.6794 yuan on Monday and dropped to 74.09 yen from 74.46 yen.
It increased to 62.72 euro cents from 62.51c on Monday. The trade-weighted index was little changed at 75.40 from 75.56 yesterday.
- BusinessDesk