US Expats in Australia: Superannuation, PFIC Rules & Tax Guide (2026)

Australia is one of the most popular destinations for US citizens relocating abroad — driven by lifestyle, English-language environment, and strong employment in mining, finance, and technology. It is also one of the most financially complex countries for US citizens to navigate. Unlike the UK and Canada, Australia's tax treaty with the United States contains no provision for deferring US tax on superannuation, leaving employer-mandated retirement contributions in a grey zone with no IRS guidance. Every Australian managed fund and ASX-listed ETF is almost certainly a PFIC. Australia's generous 50% CGT discount is invisible to the IRS — which taxes the full gain. Getting these issues wrong quietly costs tens of thousands of dollars over a career spent in Sydney or Melbourne.

1. FEIE vs Foreign Tax Credit: FTC Almost Always Wins in Australia

US citizens living abroad use one of two primary mechanisms to reduce double taxation on foreign earned income:

• Foreign Earned Income Exclusion (FEIE, Form 2555) — excludes up to $132,900 of foreign earned income from US gross income in 2026.¹
• Foreign Tax Credit (FTC, Form 1116) — applies Australian income taxes paid directly against your US tax liability, dollar for dollar.²

Australian marginal income tax rates in 2025–26 are:³

• $0–$18,200 AUD: 0%
• $18,201–$45,000 AUD: 16%
• $45,001–$135,000 AUD: 30%
• $135,001–$190,000 AUD: 37%
• $190,001+ AUD: 45%

Add the 2% Medicare Levy and the effective top marginal rate is 47%. For a US citizen earning A$200,000 (roughly US$130,000), the Australian tax rate exceeds the US rate on the same income — meaning the FTC fully offsets any net US tax liability on that income. Excess credits carry back one year or forward ten years under IRC §904(c).

The FEIE traps are the same as everywhere:

• Self-employment tax: Under IRC §1402(a)(8), the 15.3% SE tax applies to excluded income — FEIE doesn't reduce it.
• IRA contribution forfeiture: Excluded earned income cannot fund IRA or Roth IRA contributions. If all your earned income is FEIE-excluded, you lose IRA eligibility for that year.
• Five-year revocation lock-in: Revoking a FEIE election bars re-election for five years. If you move to a lower-tax country later, you're locked out.
• FTC limitation interaction: Mixing FEIE and FTC for different income baskets creates an unfavorable §904 limitation formula that reduces the FTC you can take on non-excluded income.

Use our FEIE vs FTC calculator to model your specific situation. For US citizens with meaningful Australian employment income, FTC wins clearly. The FEIE might make sense in a year with very low Australian income and minimal Australian tax paid — rare for this audience.

2. Superannuation: The Most Complex Issue for US Citizens in Australia

Australian superannuation is the mandatory employer-funded retirement system. Under the Superannuation Guarantee (SG), Australian employers must contribute 12% of an employee's ordinary time earnings to a super fund from July 1, 2025 onward (11.5% in FY 2024–25).⁴ For a US citizen earning A$150,000, that's roughly A$18,000 in annual employer contributions going into super — and the US tax treatment of those contributions is genuinely uncertain.

The Treaty Gap

The US-Australia income tax treaty does not contain a provision for deferring US tax on superannuation growth or employer contributions. Compare:

• UK SIPP: Article 18(1) of the US-UK treaty explicitly defers US tax on contributions and earnings inside a SIPP until distribution.
• Canadian RRSP: Rev. Proc. 2014-55 codifies a treaty-based deferral election for RRSPs, eliminating annual US tax on undistributed income.
• Australian Super: No equivalent provision. The IRS has issued no revenue procedure, letter ruling, or other authoritative guidance specifically addressing Australian superannuation.

How Most Practitioners Handle It

In the absence of IRS guidance, cross-border tax professionals use different approaches based on the type of super fund:

Industry and retail super funds (most common): These are typically classified as employee benefit trusts for US tax purposes — a foreign grantor trust analog where the employee is not currently the beneficial owner. Under this approach:

• Employer SG contributions may be treated as taxable compensation in the year they vest (i.e., immediately for most funds). This means A$18,000 of super contributions could add ~US$11,500 to your US taxable income annually — even though you can't access those funds until retirement.
• Investment earnings inside the fund may be deferred (not currently taxable) while the funds remain in the accumulation phase, since you have no current right to the earnings.
• Distributions at retirement are taxable ordinary income on your US return.

Self-Managed Super Funds (SMSFs): SMSFs are frequently classified as foreign grantor trusts under IRC §§671–679 because the member typically has direct control over the fund's assets and investment decisions. This triggers:

• Form 3520 (Annual Return to Report Transactions with Foreign Trusts) — required annually, with penalties of the greater of $10,000 or 35% of the gross reportable amount for failure to file.
• Form 3520-A (Annual Information Return of Foreign Trust) — required annually with the same penalty exposure.
• Annual taxation of earnings: As a foreign grantor trust owner, all income earned inside the SMSF — including investment gains — is taxable to you in the year it accrues, not deferred.
• PFIC exposure for fund holdings: Any Australian managed funds or ETFs held inside the SMSF may require Form 8621 (PFIC reporting) — compounded on top of the Form 3520/3520-A burden.

What This Means in Practice

Many US citizens in Australia have been following Australian financial advice — maximizing voluntary super contributions to reduce Australian taxable income — without realizing they may be accelerating US taxable income in the process. An Australian financial planner will recommend salary sacrifice (voluntary pre-tax contributions to super) as a tax-efficient strategy. For a US citizen, that same salary sacrifice may simply shift income from "Australian taxable but FTC-offsettable" to "Australian non-taxable but potentially US-taxable without an offsetting FTC." The result can be higher net tax, not lower.

Before making any voluntary super contributions, model the US tax impact with a cross-border specialist.

3. Australian ETFs and Managed Funds: PFIC in Every Product

In non-registered (taxable) investment accounts, Australian-domiciled managed funds and exchange-traded funds are almost certainly Passive Foreign Investment Companies (PFICs) under IRC §1297.⁵ This includes:

• ASX-listed ETFs (Vanguard Australia, BetaShares, iShares Australia)
• Managed funds offered by Australian banks and fund managers
• Any pooled investment vehicle where 75%+ of gross income is passive or 50%+ of assets produce passive income

Without a QEF or mark-to-market election, gains on PFICs are subject to the §1291 excess distribution regime: taxed at the highest ordinary income rate (37% in 2026) plus a compounding interest charge that accrues back to the year the investment was first held. Our PFIC tax impact calculator shows how quickly this erodes long-term returns compared to holding US-domiciled ETFs.

The solution: Hold US-domiciled ETFs (VTI, VXUS, VOO, BND) in Australian taxable brokerage accounts. These are not PFICs. You can get broad global market exposure — including Australian equities — through US-listed products without the PFIC complications. Australian brokers that accept US-citizen clients (Interactive Brokers Australia, for example) can hold US-listed ETFs.

Individual Australian company shares (direct stock ownership) are also not PFICs — each company is its own operating entity with primarily active income. PFIC classification applies to pooled investment vehicles, not direct equity ownership.

Note on super fund holdings: The PFIC rules may apply to Australian-domiciled managed funds held inside your super fund, adding another layer of complexity to the SMSF analysis. Unlike the Canadian RRSP (which has treaty-based PFIC protection), there is no equivalent shield for Australian superannuation.

4. The CGT Discount Asymmetry: Australia Gives It, the IRS Doesn't

Australian residents who hold an asset for more than 12 months qualify for a 50% capital gains tax discount — only 50% of the gain is included in assessable income for Australian CGT purposes. For a $200,000 gain, Australia taxes $100,000. The IRS taxes all $200,000.

This creates a structural asymmetry for US citizens:

• You pay Australian CGT on $100,000 (the discounted amount).
• You report a US capital gain of $200,000 (the full amount).
• The Australian CGT paid on $100,000 generates only a partial FTC credit against the US tax on $200,000.
• In most cases, you end up owing residual US capital gains tax — despite having paid Australian tax on the same gain.

There is no workaround. The IRS treats Australian CGT as a creditable income tax, but only the amount actually paid to Australia (on the discounted 50% gain) creates FTC. The undiscounted portion of the gain that Australia exempts generates no FTC to offset the US liability.⁶

Additional trap for non-resident sellers: If you have already left Australia and become a non-resident for Australian tax purposes, Australia itself disallows the 50% CGT discount for gains that accrued after May 8, 2012. So if you sell an Australian investment asset after departing Australia, you pay full Australian CGT on the gain (no 50% discount) AND full US capital gains tax — with FTC coordination your only relief against double taxation.

5. Australian Real Estate: PPOR Exemption, Negative Gearing, and Non-Resident Withholding

Principal Place of Residence (PPOR) Exemption

Australia exempts the family home (PPOR) from CGT if it was your main residence for the entire ownership period. The US offers a parallel exclusion under IRC §121: $250,000 single / $500,000 MFJ of capital gain on a primary residence you lived in for at least 2 of the last 5 years.

The interaction:

• If you sell your Australian home while still an Australian resident and meet the PPOR test, Australia owes zero CGT. With no Australian tax to credit, you pay US capital gains tax on any gain exceeding the §121 exclusion ($250K/$500K) with no FTC offset available.
• If the gain exceeds both the Australian PPOR exemption and the US §121 exclusion, you owe US capital gains tax on the excess — with no Australian FTC to reduce it.
• If the property was rented for some periods, both countries apply proportional calculations — Australia pro-rates the PPOR exemption; the US applies its own §121 rules independently.

Negative Gearing

Australia allows taxpayers to deduct losses on negatively geared investment properties (rental income less than interest and expenses) against other income. This is a standard Australian tax-reduction strategy. The IRS applies its own passive activity loss rules under IRC §469 — losses from passive rental activities are generally not currently deductible against ordinary income unless you qualify as a real estate professional (defined under US law, not Australian). A property producing a deductible Australian tax loss may generate a suspended passive loss for US purposes. The two regimes run independently; don't assume an Australian deduction translates to a US deduction.

Non-Resident Withholding (Foreign Resident Capital Gains Withholding)

If you have left Australia and become a non-resident for Australian tax purposes, any sale of Australian real property with a contract price of A$750,000 or more triggers a mandatory withholding obligation on the purchaser: 12.5% of the gross purchase price must be withheld and remitted to the ATO.⁷ This is a prepayment of your Australian tax, not additional tax — you receive a credit against your final Australian tax liability, with a refund if the actual CGT is less than the withheld amount. Plan for cash-flow timing when selling Australian property as a non-resident.

Currency Gains on Mortgage Debt

If you borrowed in Australian dollars to purchase an investment property, changes in the AUD/USD exchange rate can create a US taxable gain or deductible loss on mortgage repayment that is entirely separate from the property's market performance. This is a function of IRC §988 (treatment of foreign currency gains and losses) and is often overlooked in cross-border property planning.

6. Medicare Levy: 2% and Its FTC Treatment

The 2% Medicare Levy applies to most Australian residents on top of their income tax, funding Australia's universal healthcare system. Combined with the top marginal rate, the effective top rate is 47%.

The FTC creditability of the Medicare Levy is not definitively confirmed by the IRS. The Medicare Levy is levied proportionally to income (not in exchange for a specific benefit), which is the key test for whether a foreign tax qualifies as an income tax under IRC §901 and Treas. Reg. §1.901-2. Most US cross-border tax practitioners treat the Australian Medicare Levy as a creditable income tax — meaning the full 47% (45% + 2%) generates FTC on your Form 1116. However, no IRS ruling or revenue procedure has specifically addressed the Medicare Levy's creditability, and the IRS has disallowed some social-insurance levies from other countries in the past.⁸

The practical impact: if your Australian income tax (excluding Medicare Levy) fully offsets your US tax, the Medicare Levy's creditability is irrelevant — you have excess FTC either way. The question matters most in borderline situations. A cross-border specialist can assess the risk for your specific facts.

7. US-Australia Totalization Agreement and Social Security

The US and Australia entered into a Totalization Agreement that entered into force on October 1, 2002.⁹ Key provisions:

• Prevents dual social security taxation: Workers temporarily assigned to Australia by a US employer pay US Social Security only (not Australian superannuation under the SG). Conversely, Australians working temporarily in the US pay Australian super only, not US Social Security. An SSA Certificate of Coverage (Form SSA-2490) formalizes this for employer-sent workers and the self-employed.
• Totalization of credits: If you've split your career between the US and Australia and don't have enough credits in either system alone to qualify for benefits, you can combine US and Australian quarters of coverage to establish eligibility. Each country pays its own proportional benefit based on actual covered earnings.
• No WEP/GPO reductions: The Social Security Fairness Act (January 2025) repealed the Windfall Elimination Provision (WEP) and Government Pension Offset (GPO). If you receive an Australian pension alongside US Social Security benefits, those Australian benefits no longer reduce your US Social Security as they once did under WEP.

Note: The Totalization Agreement relates to Social Security contributions and benefit eligibility — it does not affect how superannuation is treated for US income tax purposes. The two regimes are separate.

8. FBAR and FATCA: Reporting Australian Accounts

Every Australian financial account must be evaluated for FBAR and FATCA reporting:

• FBAR (FinCEN 114): Required if the aggregate of all your foreign financial account balances exceeds $10,000 at any point during the calendar year. Australian bank accounts, brokerage accounts, super fund accounts, and term deposits all count. SMSFs count. The annual deadline is April 15 (automatic extension to October 15 — no form required).
• Form 8938 (FATCA): Required for US citizens living abroad if total foreign assets exceed $300,000 single / $600,000 MFJ at any point during the year (or $200,000 / $400,000 at year-end). Australian super balances, real property held through trusts or entities, and brokerage accounts all contribute to this threshold.
• PFIC reporting (Form 8621): Required for each PFIC position held during the year (Australian-domiciled managed funds, ETFs). Form 8621 has a December 2025 revision that added a required currency code field in Part V. One Form 8621 per PFIC per year.
• Form 3520 / 3520-A: Required for SMSFs classified as foreign grantor trusts. Also potentially required for any Australian trust structure you participate in as a beneficiary or settlor.
• The FATCA bank problem: Many Australian banks have restricted or closed accounts of US citizens due to FATCA compliance burden — similar to the UK and Canada experience. If a bank closes your account, it will typically inform you in advance. Having a US custodian account that accepts Australian residents as an ongoing alternative is worth setting up before any Australian bank acts.

9. State Taxes: The US Domicile Trap

Moving to Australia does not automatically sever your US state tax obligations. If you were domiciled in California, New York, or another aggressive state before emigrating, you may still be treated as a state tax resident — owing state income tax on worldwide income on top of Australian taxes. California explicitly does not recognize the federal Foreign Earned Income Exclusion, and applies a detailed 9-factor domicile test. New York has a statutory resident rule (183+ days in New York + a "permanent place of abode") that can snare expats who keep a US property. See our state residency planning guide for the full domicile severance checklist before you depart.

10. What to Do Before Moving to Australia

1. Model FEIE vs FTC. For most earners at Australian income levels, FTC wins. Confirm with your specific income, filing status, and projected Australian tax rate. Use our calculator.
2. Reposition non-registered investments. Replace any Australian-domiciled ETFs you're planning to buy with US-domiciled equivalents (VTI, VXUS, etc.). Confirm your US brokerage will maintain your account for non-US residents — many will not. Interactive Brokers and TD Ameritrade International are commonly used by expats.
3. Get specialist advice on your super before salary sacrificing. The default Australian advice (maximize salary sacrifice to super) may increase your net tax as a US citizen. Do not make voluntary super contributions without understanding the US tax impact first.
4. Understand your SMSF vs industry fund decision. If you're considering an SMSF for investment control, factor in the Form 3520/3520-A filing burden and annual grantor trust taxation. For most US citizens, an industry fund with lower compliance requirements is preferable.
5. Sever your prior US state domicile properly. Change driver's license, voter registration, and professional registrations to a no-income-tax state (or document your Australian intent clearly) before you move. See our state residency guide.
6. Consider a Roth conversion before departure. If you're leaving a US job with a high income, the year of departure may be a relatively low US income year — a window for Roth conversions at a lower effective rate. Once in Australia, using FTC to offset US tax on conversion income is complex. Do the conversion while still in the US.
7. Document your super fund's classification. Ask your super fund trustee whether the fund is an industry fund, retail fund, or SMSF, and get the trust deed. Your cross-border advisor needs this to determine the correct US tax treatment.
8. Plan for the CGT discount asymmetry. If you hold appreciated Australian assets, understand that selling after departure as a non-resident means no 50% CGT discount in Australia and full capital gains tax in the US, with only partial FTC relief. Selling before departing while still an Australian resident may produce a better outcome.

What an Australia-Specialist Expat Advisor Handles

A US generalist financial advisor will decline you as a non-US-resident client or miss the super, PFIC, and CGT issues entirely. An Australian financial planner will manage your super efficiently for Australian tax purposes while inadvertently creating US tax problems. You need a US-licensed, fee-only advisor who works specifically with US citizens in Australia. They handle:

• FEIE vs FTC modeling for your Australian income, filing status, and super contribution strategy
• Superannuation US tax treatment — employer SG contributions, voluntary salary sacrifice impact, SMSF vs industry fund analysis
• Form 3520/3520-A preparation for SMSFs or trust structures
• Portfolio construction: replacing Australian PFIC exposures with US-domiciled ETFs
• CGT discount asymmetry planning — timing asset sales before or after departure
• Australian real estate planning: PPOR, negative gearing passive-loss interactions, non-resident withholding on departure
• FBAR, Form 8938, Form 8621 preparation and coordination
• State domicile severance documentation
• US-Australia Totalization Agreement planning and Certificate of Coverage
• Non-US spouse planning: QDOT trust if estate assets approach $15M, non-citizen spouse annual gift limit ($194,000 in 2026)¹⁰

1. IRS Publication 54, Tax Guide for U.S. Citizens and Resident Aliens Abroad — Foreign Earned Income Exclusion. 2026 FEIE limit $132,900 per IRS Rev. Proc. 2025-67. irs.gov/publications/p54
2. IRC §901–§905; IRS Form 1116 Instructions (2026). Foreign Tax Credit framework. irs.gov/forms-pubs/about-form-1116
3. Australian Taxation Office: Tax rates — Australian residents, 2025–26. Rates reflect Stage 3 tax cuts effective July 1, 2024 with the 16% bracket; Note: from July 1, 2026, the 16% rate reduces to 15%. ato.gov.au — tax rates Australian residents
4. Australian Taxation Office: Super guarantee percentage. SG rate 11.5% for FY 2024–25; increases to 12% from July 1, 2025 (FY 2025–26) — the final step in the legislated SG increase schedule under the Superannuation Guarantee (Administration) Act 1992. ato.gov.au — super guarantee percentage
5. IRC §1297 (PFIC definition); IRS Form 8621 Instructions (December 2025 revision). Australian-domiciled managed funds and ETFs generally meet the PFIC definition under the income test or asset test. irs.gov/forms-pubs/about-form-8621
6. IRC §901(a); Treas. Reg. §1.901-2; IRS Publication 514, Foreign Tax Credit for Individuals. The FTC applies only to taxes actually paid or accrued to a foreign country — the Australian CGT discount creates a mismatch where the discounted Australian tax does not fully offset the US tax on the undiscounted gain. irs.gov/publications/p514
7. Australian Taxation Office: Foreign Resident Capital Gains Withholding. 12.5% withholding applies to Australian real property contracts of A$750,000 or more by non-residents; effective from 1 July 2017 (originally 10%/$2M, reduced threshold effective 1 July 2017). ato.gov.au — foreign resident capital gains withholding
8. IRC §901(b); Treas. Reg. §1.901-2(a)(2) (net gain tax requirement); IRS Publication 514. The Medicare Levy's creditability depends on whether it meets the "net gain" requirement. The dominant cross-border practitioner position treats it as creditable, but no IRS ruling has confirmed this specifically for the Australian Medicare Levy. irs.gov — foreign taxes qualifying for FTC
9. SSA: Agreement on Social Security between the United States of America and Australia, entered into force October 1, 2002. Prevents dual Social Security/super contribution obligations; provides totalization of credits for benefit eligibility. ssa.gov/international/Agreement_Pamphlets/australia.html
10. IRC §2523(i): Annual gift tax exclusion for transfers to non-citizen spouses. 2026 limit $194,000 per IRS Rev. Proc. 2025-67. Non-citizen spouses do not qualify for the unlimited marital deduction under IRC §2056(d). See also non-US spouse planning guide.

US tax values verified as of May 2026 against IRS.gov, SSA.gov, and ATO.gov.au. Australian tax rates reflect FY 2025–26 (July 1, 2025 – June 30, 2026). Exchange rate references are illustrative; actual USD amounts depend on AUD/USD rates at time of transaction.