The fact sheet explains that earnings will be calculated based on an individual’s total super balance, including all notional gains and losses.

In a recent article, Smarter SMSF chief executive Aaron Dunn noted that there are numerous areas of the existing super laws that influence a member’s total super balance that haven’t been discussed in this initial fact sheet that will play an important role in how the tax will apply.

“Consider things like family law splits, reversionary pensions, insurance proceeds, just to name a few,” said Mr Dunn.

Heffron managing director Meg Heffron similarly pointed out that where a member inherits a pension, this could result in a significant change in their balance and push them above the $3 million threshold.

Ms Heffron gave an example of a member with a $2 million super balance at 30 June 2025.

During the year, the member’s wife dies and he inherits her $2 million pension, she explained. He decides to keep the pension running and leave the money in super.

“During the year his balance increases with earnings, he takes some pension payments and at the end of the year he has a total of $4.2m in super.

All of a sudden someone who never expected to be included in this measure will be,” Ms Heffron cautioned.

Ms Heffron said she hopes that the government’s formula will be sophisticated enough to adjust for the fact that the member’s $2 million inheritance should be treated as a contribution.

“Otherwise it would be included in his earnings and subject to the special extra tax,” she warned.

Speaking at the recent SMSF Association National Conference, SMSF Association head of policy and advocacy Tracey Scotchbrook said it is crucial that any soft cap on balances proposed by the government excludes insurance proceeds.

“Something that hasn’t been talked about is how many funds with large balances that they’ve quoted in the statistics include these sorts of amounts of money,”  she stated.

“It’s really important that we have these people excluded. We’ve got the measure there in terms of the transfer balance cap and total super balance so we need to make sure they’re protected here as well.”