Treasurer Jim Chalmers has announced the federal government's stalled superannuation tax increases will be reworked after criticism over the plan.

Alongside the $3 million threshold at which the tax rate was doubled, a new threshold of $10 million would also be created at which a 40 per cent tax rate would be applied.

But those thresholds would now be indexed to inflation, meaning it would no longer capture more people over time due to bracket creep.

The tax increase will also no longer apply to unrealised capital gains, a key criticism of the proposal.

The treasurer said the government was prepared to rework the bill to see it through parliament.

"We have always had in our back pocket indexation, or an indexation like this, in order to get it through parliament," Mr Chalmers said.

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