Is Australian superannuation taxed in the US?

Possibly - and its treatment is complex and unsettled. The IRS does not clearly mirror Australia's concessional super treatment, and super can raise US tax and reporting questions (often discussed under foreign-trust rules, FBAR, and FATCA). Do not assume it's tax-free. Consult a US-Australia cross-border CPA.

Is there a US-Australia tax treaty?

Yes. The US and Australia have both an income tax treaty and a Social Security totalization agreement, which reduce double taxation and coordinate Social Security. Superannuation, however, is not cleanly resolved by the treaty - get specialist advice.

When should an Australian get cross-border tax advice?

Ideally before becoming a US tax resident, because timing of contributions, withdrawals, and residency can affect outcomes - especially for superannuation. Brian is a REALTOR, not a CPA; he can focus on the home while a specialist handles the tax analysis.

US-Australia Tax Treaty & Superannuation Cross-Border Guide

Direct AnswerThe US and Australia have both an income tax treaty and a Social Security totalization agreement. The thorniest issue for Australians is superannuation: the IRS does not clearly mirror Australia's concessional super treatment, and super may raise complex US questions (potentially as a foreign trust, with FBAR/FATCA reporting). Do not assume your super is tax-free in the US. US persons are taxed on worldwide income. This page is general orientation - Brian is a REALTOR®, not a CPA, and superannuation cross-border planning genuinely requires a specialist.

Most of an Australian's move to LA is smooth. Superannuation is the exception - it's the single most important thing to get professional advice on before and after the move.

The treaty framework

The US and Australia have an income tax treaty and a Social Security totalization agreement, which together reduce double taxation and coordinate Social Security between the systems.

Why superannuation is complicated

Superannuation is tax-advantaged in Australia, but the IRS does not clearly recognize that treatment. Depending on the fund and the analysis, super can be viewed in ways that create US tax and reporting exposure (it's frequently discussed in terms of foreign-trust rules, FBAR, and FATCA). The treatment is genuinely unsettled and fact-specific. The practical takeaways:

Do not assume super is tax-free in the US.
Get a cross-border CPA involved before you become a US tax resident, because timing can matter.
Coordinate contributions, withdrawals, and any rollover decisions with that advice.

This is the clearest example on the whole site of "talk to a specialist." Brian's role is the home; the super analysis belongs to a US-Australia cross-border tax professional.

See also the Australian relocation hub and the E-3 visa guide.

Important - please read: Brian Cooper is a licensed California REALTOR® (DRE# 01434286), not an immigration attorney, CPA, tax adviser, or financial adviser. The visa, tax-treaty, FIRPTA, mortgage, and currency information here is general and educational - confirm your own situation with a qualified cross-border immigration attorney and CPA before acting. Any lender or service-provider referral is disclosed under RESPA. Equal Housing Opportunity - service-area awareness only, never steering by national origin or any protected class.

Primary sources: IRS - US Income Tax Treaties A to Z · SSA - US-Australia Totalization Agreement · IRS - FATCA