Australia is a high-tax country with a comprehensive US income tax treaty and a totalization agreement, so most Americans here owe little or no US tax after credits. The complications are not the basic return; they are superannuation, Australian managed funds (PFICs), franking credits, and capital gains, each of which the US treats differently from the ATO.
US filing basics every American abroad must know
US citizens and green-card holders are taxed on worldwide income wherever they live, and usually must file Form 1040 once gross income exceeds the IRS threshold (roughly $15,000 to $30,000 depending on filing status for recent years), even when no tax is ultimately due. The tools that prevent double taxation are the Foreign Earned Income Exclusion (FEIE, up to $130,000 for 2025 under IRC §911) and the Foreign Tax Credit.
Two reporting rules catch most filers in Australia: the FBAR (FinCEN Form 114), required when foreign financial accounts exceed $10,000 in aggregate at any point in the year, and Form 8938 (FATCA) for specified foreign assets above the applicable threshold. Both can carry penalties even when no tax is owed. If you are behind, the Streamlined Filing Compliance Procedures are the usual penalty-free path back for non-willful taxpayers.
US tax treaty with Australia
The US-Australia income tax treaty (signed in 1982 and amended by a 2001 protocol) reduces or reallocates tax on several income types, but the saving clause lets the US continue to tax its citizens and green-card holders as if much of the treaty did not apply. In practice it matters most for withholding on investment income and for residency tie-breakers; the Foreign Tax Credit does the heavy lifting against Australia's higher rates.
Article 18 (Pensions). Periodic pension and retirement payments are generally taxable only in the country of residence, though the saving clause and the treatment of superannuation complicate this for US citizens.
Article 19 (Government service). Salaries paid by one government are generally taxable only by that government, with exceptions for local nationals and permanent residents.
Article 1(3) (Saving clause). The United States reserves the right to tax its citizens and residents as if the treaty had not entered into force, with limited exceptions. This is why most US citizens in Australia still file a full US return.
| Income type | Treaty rate | Statutory rate | Notes |
|---|---|---|---|
| Dividends | 15% | 30% | 5% where the corporate recipient holds at least 10% |
| Interest | 10% | 10% | |
| Royalties | 5% | 30% |
Because of the saving clause, a US citizen generally cannot use the treaty to exempt income from US tax; it mainly supports reduced withholding and supplies tie-breaker rules for residency.
Superannuation and US tax
The IRS does not treat Australian superannuation as a qualified retirement plan. Depending on the fund and your facts, the US may view it as a foreign grantor trust, an employees' trust, or a foreign financial account, which affects whether employer contributions, employee contributions, and internal earnings are taxable in the year they occur.
Two consequences matter for almost everyone: superannuation counts toward the $10,000 FBAR aggregate and may require Form 8938, and a self-managed super fund (SMSF) can trigger foreign-trust reporting on Form 3520 and 3520-A. The US-Australia totalization agreement (in force 1 October 2002) covers the Superannuation Guarantee for social-security-coverage purposes, which is separate from how the fund's income is taxed.
Investments, property, and capital gains in Australia
Australian managed funds and many ETFs are PFICs for US purposes, so they can require Form 8621 and punitive default taxation unless a QEF or mark-to-market election is made. Franking credits reduce Australian tax but do not create a separate US foreign tax credit. On real estate, the US taxes worldwide capital gains. Unlike Australia's unlimited main-residence exemption, the US has a capped primary residence exclusion of up to $250,000 ($500,000 if married filing jointly) under Section 121, so a sale that is tax-free in Australia can still produce a US capital gain.
Self-employment and companies in Australia
An Australian Pty Ltd you own can be a controlled foreign corporation, bringing Form 5471 and possible GILTI or Subpart F income into your US return. Sole traders and contractors generally owe US self-employment tax unless the totalization agreement assigns coverage to Australia (documented with a certificate of coverage); the FEIE does not reduce self-employment tax.
Worked examples
Software engineer in Sydney on local payroll (2025)
Salary of AUD 180,000 (roughly USD 120,000). The FEIE excludes up to $130,000 of foreign earned income, so the wages can be fully excluded and US tax on salary is typically zero. The catch is reporting: employer superannuation and any managed-fund holdings still drive FBAR, possible Form 8938, and PFIC questions, and switching to the Foreign Tax Credit may be better than the FEIE if the goal is to claim the Child Tax Credit.
Retiree drawing an account-based pension (2025)
An Australian account-based pension is not automatically tax-free for US purposes the way it can be in Australia after age 60. The distributions are generally reportable to the IRS, the Foreign Tax Credit offsets any Australian tax paid, and the underlying fund still raises FBAR and Form 8938 questions on the balance.
Common mistakes for Americans in Australia
- Leaving superannuation off the FBAR, which often pushes the combined total of bank, brokerage, and super accounts over the $10,000 threshold.
- Claiming Australian franking credits as a US foreign tax credit.
- Treating Australian managed funds and ETFs as ordinary shares and skipping Form 8621 (PFIC).
- Assuming the post-60 tax-free status of an Australian pension carries over to the US return.
- Using the FEIE to try to cancel self-employment tax, which it does not do.
Australia tax FAQ
Is Australian superannuation reported on the FBAR?
In most cases yes. The IRS generally treats superannuation as a foreign financial account or foreign trust, and its value counts toward the $10,000 FBAR aggregate. Form 8938 can also apply once asset thresholds are crossed.
Do I still owe US tax if I already pay higher Australian tax?
Usually not on the same income. The Foreign Tax Credit lets you offset US tax with Australian tax paid, and Australian rates are generally higher, so US tax on salary is often zero. You must still file to claim the credit, and items such as PFIC funds can create US tax even when wages do not.
Are franking credits useful on my US return?
Not directly. Franking credits reduce Australian tax; the US foreign tax credit is based on the Australian tax actually imposed on the income, so franking credits do not create a separate US benefit.
Does the US-Australia totalization agreement stop double Social Security tax?
Yes, for coverage. The agreement (in force since 2002) assigns social-security coverage to one country and recognizes the Superannuation Guarantee, which prevents double social-security contributions for many workers and the self-employed.
Do I need to report a sale of my Australian home?
Often yes. The US taxes worldwide capital gains. Unlike Australia's unlimited main-residence exemption, the US has a capped primary residence exclusion of up to $250,000 ($500,000 if married filing jointly) under Section 121, so a sale that is tax-free in Australia can still produce a reportable US capital gain.
Sources and last reviewed
- IRS, Australia tax treaty documents (verified 2026-06-06)
- SSA, US-Australia totalization agreement (verified 2026-06-06)
- IRS, Foreign Earned Income Exclusion (verified 2026-06-06)
- IRS, Report of Foreign Bank and Financial Accounts (FBAR) (verified 2026-06-06)
Last reviewed .
Common services needed by expats in Australia
Most Americans abroad in Australia need help with at least one of the following core compliance areas, which frequently interact:
- US expat tax returns, Form 1040 with FEIE, FTC, treaty positions, and any required state returns.
- FBAR reporting, FinCEN Form 114 for foreign financial accounts exceeding $10,000 aggregate at any time during the year.
- Form 8938 (FATCA), IRS disclosure of specified foreign financial assets when thresholds are met.
- Streamlined catch-up filing, For eligible non-willful taxpayers with prior unfiled years.