The Australian share market has closed flat as the heavyweight mining and finance sectors pulled in opposite directions.

The benchmark S&P/ASX200 index finished down 2.6 points, or 0.04 per cent, to 6,543.7 points at 1615 AEST on Wednesday, while the broader All Ordinaries was up 4.5 points, or 0.07 per cent, to 6,628.9.

The Aussie dollar is buying 69.46 US cents, from 69.55 US cents on Tuesday.