Blog Country Specific Expat Tax Situations

Australian Superannuation and U.S. Taxes: Reporting, Classification, and How to Stay Compliant

The IRS does not recognize Australian superannuation as equivalent to a U.S. 401(k) or IRA, and the U.S.-Australia tax treaty does not include a provision that defers U.S. tax on super growth. This means your employer’s mandatory 12% Superannuation Guarantee (SG) contributions, your voluntary contributions, and the investment earnings inside your super fund may all create U.S. tax obligations. The exact treatment depends on how your fund is classified: as an employee benefits trust or a foreign grantor trust. (ATO: Super Guarantee)

Here is what you need to know at a glance:

No automatic tax deferral: unlike Canadian RRSPs, there is no IRS revenue procedure granting automatic deferral on Australian super growth for U.S. taxpayers
Classification matters: your super is taxed very differently depending on whether the IRS treats it as an employee benefits trust or a foreign grantor trust
FBAR and FATCA required: you must report your super on FBAR if total foreign accounts exceed $10,000 and on Form 8938 if you meet the FATCA thresholds
Rev. Proc. 2020-17 relief: most standard super funds are now exempt from the costly Form 3520/3520-A filing requirements

Have Australian Super? The U.S. Tax Treatment Is Complicated.

Greenback helps Americans in Australia report superannuation correctly under IRS rules, from contributions to fund growth.

Below, we cover the two classifications and how each affects your U.S. tax return, what forms you need to file, common mistakes to avoid, and practical strategies for managing your super alongside your U.S. tax obligations as an American in Australia.

Why Does the IRS Treat Superannuation Differently from Australian Tax Law?

In Australia, superannuation is a tax-advantaged retirement program where employers are legally required to contribute 12% of an eligible employee’s ordinary time earnings (as of April 2026). Contributions are taxed at a concessional 15% rate inside the fund, and investment growth is also taxed at 15%, both well below standard Australian income tax rates. At retirement (typically age 60 or older), most withdrawals are tax-free.

The IRS sees it differently. Because super funds are structured as trusts under Australian law, the IRS treats them as foreign trusts rather than as qualified retirement plans. The U.S.-Australia tax treaty, unlike the U.S.-Canada treaty, does not include a provision allowing U.S. taxpayers to defer tax on income accruing within an Australian super fund. This means:

Contributions are not deductible on your U.S. tax return
Investment growth may be taxable annually, depending on your fund’s classification
The fund triggers foreign trust, FBAR, and FATCA reporting requirements

The practical impact depends on which of two classifications applies to your specific fund.

How Does the IRS Classify Your Superannuation Fund?

Since the IRS has issued very little direct guidance on Australian superannuation, the classification comes down to one key factor: control. Your fund will fall into one of two categories, and each has very different U.S. tax consequences.

Employee Benefits Trust

This classification generally applies to large, institutionally managed super funds (such as AustralianSuper, REST, or Sunsuper) where:

The employer makes the primary contributions
You have limited control over investment decisions
The fund is managed by professional trustees

U.S. Tax Treatment

Employer and employee contributions: taxable as current income on your U.S. return in the year they are made
Investment growth: generally tax-deferred (only taxed annually if you are considered highly compensated and the plan is deemed discriminatory)
Form 3520/3520-A: typically not required, especially under Rev. Proc. 2020-17 relief
PFIC reporting (Form 8621): not required for investments held within this type of trust

Foreign Grantor Trust

This classification applies when the U.S. person is deemed to own and control the trust assets. It is the standard treatment for:

Self-Managed Super Funds (SMSFs), where you direct the investments
Accounts where your voluntary contributions significantly outweigh the employer’s contributions
Any fund where you have the power to make investment decisions, even if you do not exercise that power

U.S. Tax Treatment

Both contributions and all investment growth are taxed in the U.S. annually (realized and unrealized)
Form 3520: required to report transactions with the foreign trust (penalties for non-filing start at $10,000 or 35% of the gross amount transferred)
Form 3520-A: required to report the fund’s income and activity
Form 8621: required for any Passive Foreign Investment Company (PFIC) investments held inside the trust

Factor	Employee Benefits Trust	Foreign Grantor Trust
Typical fund type	Large industry/retail funds (AustralianSuper, REST)	Self-Managed Super Funds (SMSFs)
Who controls investments	Professional trustees	You
Contributions taxed in the U.S.	Yes, as current income	Yes, as current income
Investment growth	Generally deferred	Taxed annually (realized and unrealized)
Form 3520/3520-A	Usually exempt (Rev. Proc. 2020-17)	Required
PFIC reporting (Form 8621)	Not required	Required
Complexity	Moderate	High

What Is Revenue Procedure 2020-17 and Does It Help?

Revenue Procedure 2020-17 provides reporting relief for U.S. persons with interests in certain tax-favored foreign trusts, including Australian superannuation funds that meet specific criteria.

If your super fund qualifies, you are exempt from filing Forms 3520 and 3520-A.

To qualify, the trust must:

Be established and operated exclusively or almost exclusively to provide pension or retirement benefits
Report information annually to the Australian Taxation Office (ATO)
Only permit contributions tied to income earned from personal services
Limit contributions by a percentage of earned income, or cap them at $50,000 per year or $1,000,000 lifetime
Condition withdrawals on reaching a specified retirement age, disability, or death, or impose penalties for early withdrawals

Most standard employer-sponsored super funds meet these requirements. SMSFs may also qualify, though the analysis is more fact-specific because of the level of control involved.

Important: Rev. Proc. 2020-17 only exempts you from Form 3520/3520-A reporting. It does not exempt you from FBAR, Form 8938 (FATCA), or the underlying U.S. tax obligations on contributions and growth. You can learn more about the IRS’s approach in our guide to the latest foreign trust regulations.

What U.S. Forms Do You Need to File for Your Super?

The reporting requirements depend on your fund’s classification. Here is a summary:

Form	Employee Benefits Trust	Foreign Grantor Trust	Threshold/Notes
Form 1040	Yes, report contributions as income	Yes, report contributions and growth as income	Required for all U.S. taxpayers
FBAR (FinCEN 114)	Yes	Yes	Total foreign accounts exceed $10,000 at any point
Form 8938 (FATCA)	Yes	Yes	$200,000 single/$400,000 joint for expats at year-end
Form 3520	Usually exempt (Rev. Proc. 2020-17)	Required	Reports transfers to and ownership of foreign trust
Form 3520-A	Usually exempt (Rev. Proc. 2020-17)	Required	Reports fund income/activity; penalties for non-filing start at $10,000
Form 8621 (PFIC)	Not required	Required if fund holds PFICs	Reports each PFIC held inside the trust
Form 1116	Yes, if claiming FTC	Yes, if claiming FTC	Offsets Australian taxes paid against U.S. liability

What Does Superannuation Reporting Look Like in Practice?

Here are two common scenarios:

Scenario 1: Industry fund, no distributions. You work for an Australian employer who contributes AUD 15,000 per year into an AustralianSuper account on your behalf. You make no voluntary contributions and take no distributions. On your U.S. return, you report the AUD 15,000 (roughly $10,000) as current income. Investment growth is deferred. You file FBAR and Form 8938 if thresholds are met. No Form 3520 or 3520-A is required under Rev. Proc. 2020-17. Your only additional cost is the tax preparation for including the super income on your return.

Scenario 2: SMSF with voluntary contributions. You run a Self-Managed Super Fund with a balance of AUD 500,000, directing the investments yourself. You contribute AUD 27,500 in concessional contributions, and the fund earns AUD 30,000 in investment returns. On your U.S. return, you report both the AUD 27,500 in contributions and the AUD 30,000 in growth as current income. You file FBAR, Form 8938, Form 3520, Form 3520-A, and Form 8621 for any PFICs held inside the fund. The Foreign Tax Credit offsets the 15% Australian tax already paid on contributions and growth, reducing your net U.S. liability.

How Do You Determine Whether Your Super Is an Employee Benefits Trust or a Foreign Grantor Trust?

The IRS has not issued definitive guidance, so the classification requires a facts-and-circumstances analysis. Ask yourself these questions:

Who made the larger contribution? If your voluntary contributions exceed the employer’s SG contributions, the fund is more likely to be treated as a foreign grantor trust.
Do you direct the investments? The power to choose how your super is invested, even if you do not exercise it, generally triggers grantor trust classification. This is why SMSFs are almost always classified as foreign grantor trusts.
Is the fund institutionally managed? If a professional trustee manages the fund and you have no say over individual investment selections, the employee benefits trust classification is more likely.

When in doubt, work with a tax professional who has experience with Australian superannuation. The classification decision affects your annual filing burden, the forms you need, and the taxes you owe.

What Are the Most Common Super Mistakes U.S. Expats Make?

Assuming super is tax-deferred like a 401(k), the U.S.-Australia treaty does not provide automatic deferral on super growth. Treating your super the same as a U.S. retirement account can lead to significant underreporting.
Missing FBAR filings: your super counts as a foreign financial account. If your total foreign accounts exceed $10,000 at any point, you must file an FBAR. Penalties for non-filing start at $12,921 per account.
Ignoring SMSF reporting complexity: SMSFs require Form 3520, 3520-A, and potentially Form 8621 for each PFIC. The penalties for failing to file Form 3520-A alone start at $10,000.
Not claiming the Foreign Tax Credit: Australia taxes super contributions at 15% and growth at 15%. If you are also paying U.S. tax on these amounts, the Foreign Tax Credit can offset your U.S. liability and prevent double taxation.
Not knowing about Rev. Proc. 2020-17, many expats file Form 3520/3520-A unnecessarily for standard industry funds. If your fund qualifies for the exemption, you can save on preparation costs and complexity.

What Changes Are Coming for Superannuation?

Payday Super (July 2026): starting July 1, 2026, employers must pay super at the same time as salary and wages, rather than quarterly. This does not change your U.S. tax treatment, but it means contributions will flow into your fund more frequently, which may affect how you track them for U.S. reporting purposes.
SG rate finalized at 12%: the Superannuation Guarantee rate reached 12% as of July 1, 2025, with no further legislated increases. The maximum contribution base for 2025-26 is AUD 65,070 per quarter (AUD 260,280 per year).

FAQs About Australian Superannuation and U.S. Taxes

Is Australian superannuation taxable on a U.S. tax return?

Yes, but the treatment depends on your fund’s classification. For employee benefits trusts (most industry funds), contributions are taxed as current income, but growth is deferred. For foreign grantor trusts (SMSFs), both contributions and growth are taxed annually. The U.S.-Australia treaty does not defer U.S. tax on super growth.

Do I have to report my Australian super on FBAR?

Yes, your super is a foreign financial account for FBAR purposes. File FBAR (FinCEN 114) if your total foreign accounts exceed $10,000 at any point during the year. The deadline is April 15 with an automatic extension to October 15. Penalties for non-filing start at $12,921 per account.

Do dual U.S.-Australian citizens need to report superannuation to the IRS?

Yes, dual citizens have the same reporting obligations as any U.S. person. You must report your super on Form 1040, FBAR (if the $10,000 threshold is met), and Form 8938 if your foreign assets exceed the FATCA thresholds. SMSFs also require Form 3520 and Form 3520-A.

Are Australian super withdrawals tax-free for U.S. tax purposes?

No, the IRS treats all super distributions as ordinary income, even when they are tax-free in Australia (typically after age 60). If you paid Australian tax on the withdrawal, the Foreign Tax Credit can offset your U.S. liability. For tax-free Australian withdrawals, there is no foreign tax to credit, so you may owe U.S. tax on the full amount.

Is an SMSF treated differently from a standard super fund for U.S. taxes?

Yes, SMSFs are almost always classified as foreign grantor trusts, which means all growth is taxed annually and you must file Form 3520, Form 3520-A (penalties start at $10,000 per form for non-filing), and Form 8621 for each PFIC held inside the fund. Standard industry funds have simpler reporting and deferred growth.

Does Rev. Proc. 2020-17 exempt my super from all U.S. reporting?

No, it only exempts qualifying funds from Form 3520 and Form 3520-A. You still must file FBAR, Form 8938, and report income on Form 1040. Most standard employer-sponsored funds qualify, but SMSFs need a case-by-case analysis.

Can I transfer my Australian super to a U.S. 401(k) or IRA?

No, there is no direct rollover mechanism. Withdrawing from your super triggers Australian and U.S. tax. After-tax (non-concessional) contributions may reduce the taxable portion on the U.S. side, but this requires careful documentation.

What happens if I have not been reporting my super to the IRS?

The Streamlined Filing Compliance Procedures can help you catch up. Expats living abroad who were non-willfully non-compliant can use the Streamlined Foreign Offshore Procedures, which waive all penalties. You file three years of amended returns and six years of delinquent FBARs.

File With Confidence From Australia or Back Home

Australian superannuation is one of the more complex areas of cross-border tax reporting, but it need not be overwhelming. Whether you are still working in Australia, have moved back to the U.S. with a super balance, or have an SMSF that needs grantor trust reporting, our team handles these filings regularly.

You Can’t Opt Out of Super. But You Can Get the Reporting Right.

Greenback helps you file accurately with flat-fee pricing, direct accountant access, and no guesswork.

This article is for informational purposes only. The content does not constitute tax, legal, or financial advice. Tax rules and regulations change frequently, and your individual circumstances may affect how they apply to you. For personalized guidance, consult a qualified tax professional.