The budget is returning to surplus as promised, with surpluses growing over the forward estimates.

A surplus is appropriate given our strong economic fundamentals and an economy returning to trend growth.

The budget spreads the benefits of the mining boom to help low and middle-income families, through increased payments to families and an allowance for eligible income recipients.

It also supports businesses to meet the challenges of the mining boom through a loss carry-back reform, which builds on the instant asset write off due to start on 1 July 2012.

The return to surplus, ahead of any other major advanced economy, sends a strong message to international investors on the Government's commitment to fiscal discipline and provides a buffer in uncertain economic times.

This budget also launches the first stage of the historic National Disability Insurance Scheme, strengthens the aged care system and improves dental services.