The Liberal Party plans to impose a new tax on earnings on balances above $1.6 million and limit non-concessional contributions to $500,000 for life, while Labor wants to impose a new tax on retirement accounts earnings above $75,000.

“There has not been any tax on earnings on super balances held by retirees. Tax-free earnings for retirees have been an established feature of our tax system since income taxes were introduced,” Mr Fairweather said.

“Both the Coalition and Labor plans to impose limits on tax-free earnings in retirement will be retrospective because they will impose a new tax on the earnings on savings that have already been made.”

Mr Fairweather said superannuation is a "contract" between government and taxpayers, with taxpayers agreeing to forego income today in return for tax-free income in retirement, and with the government committing to that promise.

“Based on this contract, people have made life-changing plans for their retirement, including when to stop work, where they will live and the standard of living they expect in their, hopefully, long years in retirement,” he said.

“The contract has now been torn up by both of the major parties. They are reneging on their promise.”

Mr Fairweather said it had long been accepted that tax changes should not apply retrospectively except when they are needed to deal with tax avoidance.

“This convention has now been broken by both of the major parties,” he said.

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