The Australian share market is expected to open flat despite gains on Wall Street overnight.

The SPI200 futures contract was up 1 point, or 0.02 per cent, at 6,542.0 at 0700 AEST, suggesting an unchanged start for the benchmark S&P/ASX200 on Tuesday.

Wall Street finished higher, with the Dow Jones Industrial Average up 0.09 per cent, the S&P 500 up 0.09 per cent and the tech-heavy Nasdaq Composite up 0.62 per cent.

The Aussie dollar is buying 68.53 US cents from 68.74 US cents on Monday.