No direct rollover exists
Australian superannuation and US retirement accounts are governed by entirely separate systems with no transfer mechanism between them. The only way funds move from a 401(k) or IRA toward superannuation is: withdraw from the US account (a taxable event), then separately contribute the proceeds to super, subject to Australia's contribution caps.
Staging withdrawals to manage your tax bracket
US tax brackets are progressive — withdrawing a large balance in a single year can push a meaningful portion of it into a much higher bracket than spreading the same withdrawal across two or three tax years would. The right approach depends on your total income (US and Australian) in each of those years, which is genuinely worth modelling before you touch the account.
The 10% early withdrawal penalty
Withdrawals before age 59½ typically carry an additional 10% penalty on top of ordinary income tax. Several exceptions exist depending on your specific circumstances — this is worth confirming properly (the IRS publishes its own guidance on this) rather than assuming either way, since assuming wrongly can be an expensive mistake.
Avoiding being taxed twice
A withdrawal can potentially be taxed in both the US and Australia. A foreign tax credit in Australia for US tax already paid is generally the mechanism that prevents genuine double taxation on the same money — but claiming it correctly depends on the order of events and your residency status at the time.
Rolling into an IRA first, if you haven't already
If your funds are still in an employer 401(k), rolling them into an IRA before deciding anything else can give you more flexibility on timing and investment choice while you work out the withdrawal strategy — worth considering as a first step rather than withdrawing directly from the 401(k).
What you can put into super afterwards
Once withdrawn, contributing the proceeds to super is capped. For FY2026–27: the standard annual non-concessional cap is $130,000, or up to $390,000 under the bring-forward rule across three years, if you're under 75 and your total superannuation balance is under $1.84m. How much you contribute in which year is a genuine lever worth planning around, not an afterthought.
See this against your own numbers
Enter your account value and residency date to see this year's actual contribution cap headroom for your situation.
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