There is a cap on the amount of superannuation contributions that may receive concessional tax treatment for an individual in a financial year.

You can carry forward unused concessional contributions cap from the previous 5 financial years and use it to increase your cap in a later financial year (unless your total superannuation balance equals or exceeds $500,000).

Superannuation contributions that exceed your concessional contributions cap are included in your assessable income for the corresponding income year.

A tax offset compensates for the tax that generally applies to the contributions in the superannuation fund.