The National Australia Bank (NAB) released its business consumer index for Australia on Monday. The business confidence index remained unchanged at 3 in April.

"Recent signs of improvement in the economic partials are encouraging but the non mining sector needs to lift more to offset the impact on domestic demand of sharply lower mining investment and the hit to income from commodity prices," the Chief Economist at NAB Alan Oster said.

National Australia Bank's index of business conditions fell to +4 in April from +6 in March.

The business sales was at +10 in April, while the index of employment declined to -2 in April from 0 in March.

The capital expenditure index decreased to +6 in April from +9 in March.