Chalmers has acknowledged that future governments may adjust the threshold, but he emphasizes that most tax thresholds are not indexed.

Former Prime Minister Paul Keating has raised concerns that most workers are likely to reach the $3 million threshold due to consistent superannuation contributions, potentially shifting the tax burden onto younger generations.

Shadow Treasurer Ted O’Brien has criticized the proposal, labeling it a 'blatant tax grab' that will disproportionately affect younger Australians over time.

Treasurer Jim Chalmers has proposed a significant change to superannuation taxation, set to take effect on July 1, 2025, which will tax earnings on superannuation funds exceeding $3 million at a rate of 30%, up from the current 15%.

This proposal is expected to impact approximately 80,000 wealthy individuals and generate up to $2.7 billion in its first year, providing crucial revenue for the government.

The anticipated revenue from this superannuation tax change is essential for addressing projected budget deficits, which are forecasted to reach $152 billion between 2025-2026 and 2028-2029.

In response, the Greens are advocating for a reduction of the tax threshold to $2 million, suggesting it should be indexed to wage growth or inflation, and they have enough Senate votes to support the government's proposals.

Critics, including ACTU secretary Sally McManus, argue that the $3 million threshold should be indexed to wage growth or inflation to prevent middle-income earners from eventually being caught by the tax.

The union movement is urging Chalmers to revise his proposal to ensure that ordinary workers are not adversely affected by the changes.