What Every American Living in Australia Needs to Know About U.S. Taxes
Key Takeaways:
U.S. citizens and Green Card holders must file a U.S. federal tax return every year, regardless of how long they have lived in Australia.
For tax year 2025, the Foreign Earned Income Exclusion (FEIE) allows eligible expats to exclude up to USD $130,000 of foreign-earned income from U.S. tax.
The Foreign Tax Credit (FTC) is often the more advantageous option for U.S. expats in Australia, because Australian tax rates are generally higher than U.S. rates, leaving little to no residual U.S. tax liability.
Australian superannuation ("super") creates complex U.S. reporting obligations — it must generally be reported on both FBAR and FATCA (Form 8938), and the IRS does not treat it the same way Australia does.
The U.S.-Australia Tax Treaty helps prevent double taxation but does not eliminate U.S. filing obligations entirely — the Savings Clause means the U.S. still retains the right to tax its citizens as if the treaty didn't exist.
FBAR (FinCEN Form 114) is required if your combined Australian financial accounts — including super — exceed USD $10,000 at any point during the year. Penalties for non-compliance can exceed $10,000 per violation.
Australia's financial year runs 1 July to 30 June, while the U.S. tax year runs 1 January to 31 December — managing this misalignment is a key practical challenge for expats.
Always seek advice from a tax professional who specialises in both Australian and U.S. international taxation. The rules are complex, change regularly, and errors can be expensive.
Disclaimer: This article is for general informational purposes only and does not constitute financial or tax advice. Tax laws change frequently. Always consult a qualified tax professional or registered tax agent before making decisions about your tax obligations. (This article was updated on February 19, 2026)
Living in Australia as an American comes with an incredible lifestyle — but it also comes with a unique and often underestimated financial obligation. Unlike most countries, the United States taxes its citizens and Green Card holders on their worldwide income, no matter where they live. That means even if you've been settled in Sydney or Melbourne for years, the IRS still expects to hear from you every year.
This guide breaks down the key U.S. tax obligations for American expats in Australia, including how to avoid double taxation, what happens with your superannuation, what the U.S.-Australia Tax Treaty actually covers, and what foreign account reporting forms you need to know about for 2025–26.
Important: Tax rules are complex and subject to change. This article provides a general overview only. Always speak with a qualified tax professional — ideally one who specialises in both U.S. and Australian taxation — before filing.
Understanding Your U.S. Tax Responsibilities as an American in Australia
As a U.S. citizen or Green Card holder living abroad, you are required to file a U.S. federal tax return (Form 1040) each year, reporting your worldwide income — including your Australian salary, investment income, and any income from your superannuation fund where applicable.
Key 2025 filing details:
Standard filing deadline: April 15 (for the 2025 U.S. tax year, which runs January 1 – December 31, 2025)
Automatic extension for expats: U.S. citizens living abroad automatically receive a two-month extension to June 15, 2026, for their 2025 return. A further extension to October 15 can be requested.
2025 filing threshold: Single filers generally need to file if gross income is USD $15,750 or more
Note that Australia's financial year runs from 1 July to 30 June, while the U.S. tax year runs 1 January to 31 December. This misalignment means you'll need to carefully reconcile the two when reporting Australian income and tax credits on your U.S. return.
The Two Main Tools to Avoid Double Taxation
U.S. expats in Australia have two primary mechanisms to reduce or eliminate double taxation on the same income. Importantly, you cannot use both on the same income.
1. Foreign Earned Income Exclusion (FEIE) The FEIE allows you to exclude a certain amount of foreign-earned income from your U.S. taxable income. For tax year 2025, the maximum exclusion is USD $130,000 per qualifying person (this amount is adjusted annually for inflation).
To qualify, you must meet one of two tests:
Bona Fide Residence Test: You are a genuine resident of Australia for a full calendar year
Physical Presence Test: You spend at least 330 full days in a foreign country during a consecutive 12-month period
The FEIE only applies to earned income (wages, salary, self-employment income). It does not apply to passive income such as dividends, interest, or rental income — nor does it apply to superannuation distributions. For income types not covered by the FEIE, the Foreign Tax Credit is the relevant mechanism.
You can also claim a Foreign Housing Exclusion or Deduction alongside the FEIE. For Sydney specifically, this was capped at approximately USD $62,300 per year for the 2025 tax year.
2. Foreign Tax Credit (FTC) The FTC allows you to claim a dollar-for-dollar credit against your U.S. tax liability for income taxes already paid to the Australian Taxation Office (ATO). Because Australian tax rates are generally higher than U.S. rates, the FTC is often the more effective strategy for U.S. expats in Australia — in many cases, it reduces U.S. tax liability to zero.
Unlike the FEIE, there is no upper limit on the FTC, making it particularly useful for higher-income earners. Unused credits can also be carried forward for up to 10 years.
A common combined strategy is to apply the FEIE to the first USD $130,000 of earned income, then use the FTC for any income above that threshold, as well as for passive income types like dividends and rent.
To understand how US taxes australian superannuation specifically — including whether your fund is classified as a foreign grantor trust or a pension plan — professional advice is essential, as the rules differ significantly from other income types.
For a broader understanding of all U.S. filing obligations that apply to you overseas, the comprehensive guides on US expat taxes are a useful starting point before you engage a specialist.
Australian Superannuation and U.S. Tax: A Complex Intersection
Australian superannuation ("super") is one of the most misunderstood and potentially costly areas for U.S. expats. The IRS does not recognise Australian super as a qualified retirement plan the way it treats a 401(k) or IRA — and this creates both reporting obligations and potential tax complications.
Updated figures for 2025–26:
Super Guarantee (SG) rate: As of 1 July 2025, employers are required to contribute 12% of your ordinary earnings into your super fund
Concessional contributions cap: AUD $30,000 per year (pre-tax)
Non-concessional contributions cap: AUD $120,000 per year (after-tax)
Transfer Balance Cap: AUD $2 million (increased from 1 July 2025)
How the IRS classifies Australian super:
The key distinction is control. Most tax professionals classify super into one of two categories for U.S. tax purposes:
Foreign Grantor Trust: Generally applies when the employee's own voluntary contributions are larger than the employer's, or when the fund is a Self-Managed Super Fund (SMSF). This classification is significantly more complex — both contributions and investment growth can be taxable in the U.S. annually, and requires filing Forms 3520 and 3520-A.
Foreign Pension Plan: Generally applies to larger, employer-dominated institutional funds where the employee has limited control (such as a typical MySuper product). This classification is simpler but still requires careful reporting.
Regardless of classification, your super balance almost certainly counts toward both your FBAR and FATCA (Form 8938) thresholds. Superannuation income generally does not qualify for the FEIE — the Foreign Tax Credit must be used instead.
If you hold an SMSF, the obligations are particularly complex and specialist advice is strongly recommended.
Utilising the U.S.-Australia Tax Treaty
The US Australia Tax Treaty is a bilateral agreement designed to prevent double taxation and clarify which country holds taxing rights over specific types of income. For U.S. expats in Australia, it covers areas including employment income, business profits, dividends, interest, royalties, pensions, and capital gains.
What the treaty can do:
Help determine which country has primary taxing rights over specific income types
Provide relief for pension and retirement income across borders
Establish a residency tie-breaker test for individuals who qualify as tax residents of both countries
What the treaty does NOT do: Critically, the treaty contains a Savings Clause — a standard provision that preserves the U.S. government's right to tax its own citizens as if the treaty did not exist. This means that even if the treaty would otherwise exempt certain income from U.S. tax, U.S. citizens and Green Card holders may still be subject to U.S. taxation under the Savings Clause. It also does not exempt you from U.S. filing or FBAR/FATCA reporting obligations.
The Totalization Agreement: Separate from the tax treaty, Australia and the U.S. have a Totalization Agreement that prevents dual social security obligations. This means you won't be required to contribute to both U.S. Social Security and Australian Superannuation simultaneously — the agreement determines which system applies based on your employment circumstances.
Managing Foreign Bank Accounts: FBAR and FATCA
Owning Australian bank accounts, investment accounts, and super funds creates reporting obligations that many expats overlook — sometimes with severe financial consequences.
FBAR (FinCEN Form 114)
You must file an FBAR if the combined value of all your foreign financial accounts — including Australian bank accounts, savings accounts, investment accounts, and superannuation funds — exceeds USD $10,000 at any point during the calendar year. Even if no single account reaches that threshold, the combined total is what counts.
Filing deadline: April 15, with an automatic extension to October 15
Filed separately from your tax return, via FinCEN's BSA E-Filing System
Penalties for non-compliance: Up to USD $10,000 per violation for non-willful failures; significantly higher — potentially USD $100,000 or more per violation — for willful violations
FATCA (Form 8938)
Under the Foreign Account Tax Compliance Act, you must also file Form 8938 (attached to your Form 1040) if your foreign financial assets exceed:
USD $200,000 on the last day of the tax year, or USD $300,000 at any point during the year (for single filers living abroad)
USD $400,000 on the last day of the year, or USD $600,000 at any point (for married taxpayers filing jointly living abroad)
Australian superannuation funds are generally treated as foreign financial assets under FATCA.
Passive Foreign Investment Companies (PFICs)
Some Australian investment vehicles may be classified as PFICs by the IRS, leading to complex reporting requirements and potentially unfavourable tax treatment. This commonly applies to certain managed funds and ETFs held outside of super. If you hold Australian managed funds or similar investments, discuss PFIC implications with your tax adviser.
Australian Tax Obligations: What U.S. Expats Also Need to Know
Beyond U.S. obligations, American expats working in Australia typically also have Australian tax responsibilities, managed through the ATO.
Australian tax residency: Australia uses several tests to determine tax residency, including the 183-day rule and a broader "resides" test. Many U.S. expats become Australian tax residents without fully realising it. Australian tax residents:
Are taxed on worldwide income at progressive rates from 0% to 45%
Are entitled to the tax-free threshold of AUD $18,200 (for 2025–26)
Pay the Medicare Levy of 2% on taxable income (high-income earners without private hospital cover may also pay the Medicare Levy Surcharge of 1%–1.5%)
Non-residents are taxed only on Australian-source income, starting at 32.5% from the first dollar — no tax-free threshold applies.
Australian tax return deadlines:
Australian financial year: 1 July to 30 June
Self-lodged returns for 2024–25: due by 31 October 2025
Returns lodged through a registered tax agent: may qualify for extensions, in some cases to 15 May 2026
Capital Gains Tax (CGT): If you sell Australian property or investments, CGT applies in both countries. Australia and the U.S. calculate gains differently, and even if you qualify for Australia's main residence CGT exemption, the U.S. may still tax the gain if it exceeds applicable thresholds. Timing your disposal carefully — and understanding each country's rules — is important.
GST for self-employed expats: If you run a business in Australia with turnover of more than AUD $75,000, you must register for GST and collect the 10% tax. This applies regardless of your citizenship.
Seeking Professional Assistance: Why It Matters
U.S. expat taxation in Australia is one of the most technically demanding areas of personal tax. The interaction between two different tax systems, two different financial years, superannuation, capital gains rules, FBAR, FATCA, and treaty provisions creates a level of complexity that is genuinely difficult to navigate without expert support.
When choosing a tax professional, look for someone who:
Is a registered tax agent in Australia and holds U.S. credentials (such as an Enrolled Agent, CPA, or similar)
Has specific experience with cross-border U.S.-Australia tax matters
Can advise on both ATO and IRS obligations simultaneously
Is familiar with superannuation reporting under both systems
Professional tax fees for expat returns are almost always deductible on your U.S. return, making qualified advice a financially sensible investment — quite apart from the peace of mind and penalty avoidance it provides.
