Australian shares are expected to open lower on Monday, with local miners and oil companies expected to be under pressure, while investors keep an eye on half-yearly earnings from three of the four big banks over the week.

The local share price index futures fell 0.1%, a 30.8-point discount to the underlying S&P/ASX 200 index close. The benchmark fell 0.8% on Friday, losing half a percent during the week.

Across the Tasman Sea, New Zealand's benchmark S&P/NZX 50 index gained marginally in early trade on Monday.