Do Americans in Australia Pay U.S. Taxes? Filing With Two Different Tax Years

Do Americans in Australia pay U.S. taxes? You file a U.S. return every year, but you often owe little or no U.S. income tax once the foreign tax credit is claimed. The U.S. and Australian tax years do not line up, because the U.S. year runs January to December and Australia's runs July to June, so half of each year's Australian tax is not final until after the U.S. deadline. That is why U.S. taxes for Americans in Australia are so often filed on the June 15 or October 15 extension. Claim the credit and report your accounts.

Key Takeaways

• Do Americans in Australia pay U.S. taxes? You must file Form 1040 on your worldwide income every year you meet the filing threshold. Whether you pay depends on how much Australian tax you can credit.
• Which deadline applies? The U.S. tax deadline for Americans in Australia is April 15 to pay, June 15 to file on the automatic extension, and October 15 with Form 4868. Any tax owed is still due April 15 to avoid interest.
• Why do the two tax years matter? An Australian year covers half of one U.S. year and half of the next, so your final Australian tax on the second half of the year is not known until after June 30.
• Does the credit follow the Australian year or the U.S. year? The U.S. year. The IRS says the credit is claimed in the U.S. tax year in which you pay or accrue the tax, not the year of your Australian return.
• What else must you file? The FBAR and Form 8938 for Australian accounts, including super, when thresholds are met.

Most Americans who move to Australia assume that paying Australian tax settles their U.S. duties, and the first year of filing is usually where the surprise lands. You discover that the IRS still expects a return, that the deadlines do not line up with the Australian tax calendar, and that the Australian figures you need are not ready when the U.S. return is due. This guide explains U.S. taxes for Americans in Australia in plain terms: who must file, how the two tax years collide, which deadlines apply, how to avoid paying twice, and which reports sit alongside your return, updated for 2026.

Which Situation Are You In?

Australian Tax Year vs. U.S. Tax Year at a Glance

The Australia-U.S. tax year difference is the root of almost every practical problem in this guide. The two systems measure the same income over different windows:

Note: From July 1, 2026, Australia's 16% rate on income between $18,201 and $45,000 falls to 15%, and to 14% from July 1, 2027. A U.S. calendar year therefore straddles two Australian rate schedules.

Do Americans in Australia Pay U.S. Taxes?

You must file, and you may or may not pay. U.S. taxes for Americans living in Australia start with a filing duty, not a payment duty. U.S. citizens and green card holders owe a U.S. return on worldwide income wherever they live, which is why U.S. tax filing requirements for expats in Australia match those of Americans at home. For the 2025 tax year, you generally must file if your gross income reaches $15,750 as a single filer or $31,500 if you are married and filing jointly. If you are married and filing separately, the threshold is $5. If you are self-employed, you must file once your net earnings reach $400. Excluding income or claiming credits does not remove the filing duty, because the threshold looks at gross income.

Whether you pay is a separate question. Australian rates are typically higher than U.S. rates, so the foreign tax credit often brings your U.S. income tax to zero on wages. You can still owe in a few situations:

• Investment income and gains. Australia taxes only half of long-term gains, while the U.S. taxes the full gain, so a gap can remain after credits.
• Super. Contributions are generally not deductible on your U.S. return, and the treatment of growth is unsettled.
• Self-employment tax. A self-employed American in Australia owes it unless the totalization exemption is documented.
• Temporary visa holders. If Australia does not tax your foreign income, there is no Australian tax to credit against the U.S. tax on it.

The short answer is that Americans in Australia almost always file, and they pay when the credit does not cover the whole bill. For the wider rules every dual citizen faces, see NSKT Global's guide to dual U.S. citizen tax obligations. 

A Quick Example: Sarah is single, lives in Sydney, and earns A$120,000 (about US$78,000) in salary for calendar 2025. Her Australian income tax on that salary is about A$26,800 (about US$17,400) before the Medicare levy. Her U.S. tax on the same income, after the standard deduction, is roughly US$8,600. The foreign tax credit wipes out her U.S. tax. The leftover credit of about US$8,800 can be carried back one year or forward ten. Sarah still has to file Form 1040 and Form 1116, but she owes the IRS nothing.

How the Two Tax Years Collide

The Australian tax year vs. the U.S. tax year is more than a calendar quirk. The U.S. and Australian tax years do not match, and that mismatch shows up in three places.

Your Income Splits Across Two Australian Years

Half of your calendar-year 2025 income falls in the Australian year that ended June 30, 2025, and half falls in the year that ended June 30, 2026:

You can lodge the second return from July 1, 2026, but the ATO advises waiting until your income statement shows "tax ready." Employers have until July 14 to finalize it, and most pre-fill data arrives by late July. Lodging early can mean amending later. Self-lodgers have until October 31, 2026, which is a Saturday, so the due date moves to Monday, November 2. The final tax on your July to December 2025 income is therefore not settled until after the U.S. deadlines for 2025 have passed. Employees see most of the tax withheld through Pay As You Go (PAYG) during the year, but the Australian assessment can still change the number.

A Quick Example: Emma earns A$10,000 a month from an Australian employer throughout 2025. Her U.S. return for 2025 reports all A$120,000. On the Australian side, the January to June pay belongs to the year ended June 30, 2025, which was assessed in 2025. The July to December pay belongs to the year ended June 30, 2026. Emma can’t lodge that return until July 2026 and may not have her assessment until later in the year, after the April 15 and June 15, 2026 U.S. dates have passed.

The Credit Follows the U.S. Year

IRS Publication 514 says the "tax year" for the foreign tax credit means the year of your U.S. return, not the year of your foreign return. The foreign tax credit for Australian income tax is claimed in the year of your U.S. return. Which U.S. year gets it depends on your accounting method for foreign taxes:

Two points matter most here. The accrual election cannot be made on an amended return, and once you make it, it applies to all foreign taxes in all later years. The paid method can suit salary earners, because PAYG withholding falls in the same calendar year as the pay, but the right choice depends on your mix of income, so decide it on your first return.

A Quick Example: Emma’s employer withholds A$14,000 of PAYG from her July to December 2025 pay. Under the paid method, she claims that A$14,000 on her 2025 U.S. return, the same year as the wages. Under the accrued method, the tax belongs to the Australian year ending June 30, 2026, so she claims it on her 2026 U.S. return. That leaves her 2025 return with the income but not all of the matching credit. In October 2026, her assessment shows she owes another A$1,500 for that Australian year. She pays it in November 2026. Under the paid method, the A$1,500 is claimed on her 2026 U.S. return, the year she pays it.

The Credit Limit Is Set by the U.S. Year

The credit cannot exceed the U.S. tax on the same income in the same year and category. When Australian tax lands in a different U.S. year from the income it relates to, you can end up with excess credit in one year and unused limit in the next. Unused foreign tax carries back one year and forward ten, which smooths most mismatches over time. Wages fall in the general category and dividends and interest in the passive category, so you may complete more than one Form 1116.

A Quick Example: Using the accrued method, Emma’s 2025 return shows more Australian income than Australian tax. That leaves an unused credit limit in 2025. Her 2026 return then carries extra credit from the late-2025 PAYG. The excess from 2026 can be carried back one year to 2025, using up that unused limit. Excess general-category credit from wages can’t cover passive-category income such as interest. Each category has its own Form 1116 and its own limit.

For the credit mechanics in full, see NSKT Global's guide to the foreign tax credit.

What Counts as Australian Tax for the Credit

Only a foreign income tax that was imposed on you qualifies. Publication 514 excludes property taxes, penalties, and interest, and it does not count taxes that are not income taxes. In Australia, that sorts roughly as follows:

• Usually counts. Australian income tax on wages, interest, rent, and capital gains, including tax withheld through PAYG.
• Usually unsettled. The Medicare levy. Most preparers include it, but we found no IRS ruling that settles it.
• Does not count. GST, stamp duty, council rates, and land tax, which are not income taxes. Employer super guarantee contributions are not a tax you paid. Franking credits are generally company-level tax, not tax imposed on you.

For the full list of what the treaty does and does not reach, see NSKT Global's guide to the U.S.-Australia tax treaty.

Deadlines for Both Countries

Expat filing in Australia runs on two calendars at once. The U.S. tax deadline for Americans in Australia has three layers, and the dates for the 2025 return filed in 2026 look like this:

The June 15 deadline for Americans in Australia is automatic if your tax home and main place of business are outside the U.S. on April 15. It moves the filing date, but not the payment date, and a Form 4868 filed by June 15 runs concurrently, giving a total of six months from April 15. If you use the October 15 extension, you can wait for your Australian assessment before finalizing the credit. For the 2026 return, the dates are April 15, 2027, June 15, 2027, and October 15, 2027.

If you are on extension for 2025, the October 15, 2026 deadline is five days away. The FBAR is due the same day.

Because of the Australia-U.S. tax year difference, many Americans in Australia file on extension. If your Australian figures are not final, you can file with estimates and amend later, which is valid but means extra paperwork. Where a later ATO assessment changes the foreign tax you claimed, the IRS can require notification, and missing a required notice can carry a penalty of 5% of the extra tax for each month, up to 25%. Keep your assessment and your amended-return deadlines in one place.

Late filing costs more than late paying. The failure-to-file penalty is 5% of the unpaid tax for each month, up to 25%, while the failure-to-pay penalty is 0.5% a month, also up to 25%, and interest runs on top. If you owe nothing after credits, those penalties have little to bite on, but late-filed forms such as Form 8938 carry their own penalties. No extension postpones estimated tax payments, so if you expect to owe U.S. tax after credits and withholding, pay it through Form 1040-ES during the year.

The Forms Behind Form 1040 for Americans in Australia

U.S. taxes for Americans living in Australia involve more than one form. Form 1040 for Americans in Australia is the main return, and several forms ride along with it:

U.S. tax filing from Australia follows the same rules as filing from anywhere abroad, and the U.S. tax return for Americans in Australia is rarely a single form. The extra forms carry most of the penalty risk.

Records to Keep for Both Calendars

Your U.S. return needs figures cut on a calendar year, and your Australian paperwork is cut on a July-to-June year, so keep records that can be sliced either way:

• Monthly pay in Australian dollars, with PAYG withheld, so you can split a year at December 31.
• Your ATO income statement and Notice of Assessment, with the dates you paid any bill or received a refund.
• December 31 and peak balances for every Australian bank, brokerage, and super account.
• The exchange rate you used, for income and for tax. For tax paid, Publication 514 uses the rate on the date paid or withheld, or the average rate for the year if you use the accrual method.

How to Avoid Double Taxation Between the U.S. and Australia

You avoid double taxation between the U.S. and Australia with four tools, used in a sensible order:

• The Foreign Tax Credit for Australian income tax. A dollar-for-dollar credit, claimed on Form 1116. It usually wins in Australia because Australian rates are higher.
• The Foreign Earned Income Exclusion. Excludes $130,000 of foreign earned income for 2025 and $132,900 for 2026 on Form 2555. The Foreign Earned Income Exclusion for Americans in Australia is rarely better than the credit, but it can suit part-year residents or low earners. Income you exclude also cannot support IRA contributions.
• The U.S.-Australia tax treaty. It supplies the credit rules, reduced withholding on Australian dividends, interest, and royalties, and special treatment for Social Security and public pensions, but it does not remove your return.
• The totalization agreement. It keeps you in one Social Security system.

You cannot use the exclusion and the credit on the same dollar, and you cannot credit tax on income you exclude. For the details, see NSKT Global's guides to the foreign earned income exclusion, U.S. tax treaties for expats, and the U.S.-Australia tax treaty.

Reporting Beyond Form 1040

Expat filing in Australia includes reports that sit outside the return, and Americans often miss them. Two matter most:

• The FBAR. FBAR requirements in Australia are the same as anywhere else: you file FinCEN Form 114 if your foreign accounts exceed $10,000 combined at any point in the year. Bank accounts, brokerage accounts, and super count. Convert each account's peak value to U.S. dollars using the Treasury rate for December 31.
• Form 8938. It applies to higher balances: $200,000 at year-end or $300,000 at any time for a single filer abroad, and $400,000 and $600,000 for joint filers.

A Quick Example: During 2025, Priya’s highest balances were A$8,000 in an everyday account, A$5,000 in savings, and A$60,000 in super. Each account alone is modest, but the total of about A$73,000 (about US$47,000) is well over US$10,000, so she must file an FBAR listing all three accounts. Her total is under the US$200,000 year-end and US$300,000 any-time thresholds for a single filer abroad, so she doesn’t need Form 8938 yet.

Super counts for both reports, whatever view is taken on its tax treatment. See NSKT Global's guides to FBAR and FATCA reporting for expats and FBAR vs Form 8938.

Special Cases for Americans in Australia

U.S. taxes for Americans in Australia have a few situations that need extra care, and most of them involve the two calendars.

Australian Residents and Non-Residents

Your Australian residency decides what Australia taxes. Residents are taxed on worldwide income at rates of 0% to 45% plus the Medicare levy, while non-residents are taxed only on Australian-source income, with no tax-free threshold. Australia generally treats you as a resident if you live there permanently, are domiciled there, or spend 183 days or more in the year there. Your U.S. filing duty does not depend on any of this, but the foreign tax credit does, because it follows the Australian tax you actually pay.

U.S.-Source Income

The foreign tax credit reduces U.S. tax on foreign-source income only, and it cannot reduce U.S. tax on U.S.-source income. If you still own U.S. rental property or U.S. dividend-paying shares, the Australian tax on that income does not offset the U.S. tax on it in the usual way. The treaty can re-source some income so that the credit reaches it, and taking a treaty position can require Form 8833, but the calculation is technical. Ask your preparer to check this before you assume the credit covers everything.

A Quick Example: Mark lives in Brisbane and keeps a rental home in Ohio that earns US$15,000 of net rent a year. Australia taxes him on it as a resident, and the U.S. taxes it too. Because the rent is U.S.-source income, his Australian tax on it doesn’t automatically reduce his U.S. tax on it. The treaty may let one country give relief, but that depends on the treaty rules and may need Form 8833. Without that analysis, Mark could pay tax on the same rent twice.

Retirees and Social Security

U.S. Social Security paid to an American in Australia is generally not taxed by Australia, but it remains taxable on your U.S. return. IRA and 401(k) withdrawals are different: Australia generally taxes residents on worldwide income, and the U.S. taxes the withdrawal too, so double-tax relief may depend on the foreign tax credit and on how Australia classifies the account. Time large withdrawals with advice from both sides.

Paid by a U.S. Employer

If a U.S. employer sends you to Australia, the totalization agreement generally keeps you in the U.S. Social Security system for assignments of up to five years, with a certificate of coverage as proof, and moves you to the Australian system after that. Ask payroll to confirm your location so withholding and coverage match your situation.

Moving to or Leaving Australia

In the year you arrive or leave, you are a part-year resident in Australia, and the two calendars cut that year differently. The Foreign Earned Income Exclusion needs 330 days abroad in a 12-month period or a full tax year of bona fide residence, so it often cannot be claimed in a first partial year. If you expect to qualify but have not yet met the test, Form 2350 extends the filing deadline to 30 days after you do. It does not extend the time to pay.

U.S. State Tax

Leaving the U.S. does not always end state tax. Some states, California and Virginia among them, can keep treating you as a resident if you keep ties such as property, a driver's license, or voter registration, and a state may not give credit for Australian tax. Check the rules for your last state of residence.

Self-Employed Americans

A self-employed U.S. citizen living in Australia does not have to pay U.S. self-employment tax under the totalization agreement, because Australia's super guarantee does not cover the self-employed. To prove it, you request an exemption letter from the Social Security Administration and attach a copy to your return each year. Without it, expect questions. See NSKT Global's guides to totalization agreements and freelance income reporting for U.S. expats.

Selling Shares or Property

A gain is reported in the year you sell on both returns, but the two countries slice that year differently. A sale in March 2026 falls in the Australian year ending June 30, 2026, and the U.S. calendar year 2026. Australia taxes only half of a gain on assets held more than 12 months, while the U.S. taxes the full gain and may add the 3.8% net investment income tax, which the foreign tax credit does not offset. Australia has also legislated the end of its 50% discount for gains that accrue from July 1, 2027, so check the date of a planned sale

A Quick Example: David earns A$300,000 (about US$195,000) in salary. In March 2026, he sells Australian shares he has held for three years, with a gain of A$40,000 (about US$26,000). Australia taxes only half the gain, so A$20,000 at his 45% marginal rate is A$9,000 (about US$5,850). The U.S. taxes the full US$26,000 at the 15% long-term rate, which is about US$3,900, and the Australian tax covers that through the credit. His income is now above US$200,000, so the 3.8% NIIT applies to about US$21,000. That adds about US$800, and no credit offsets it. David’s gain is taxed in both countries, and he still owes the U.S. a balance.

Superannuation

The treaty has no express provision for super, and the IRS has issued no formal ruling on it. Contributions are generally not deductible on your U.S. return, and the treatment of growth depends on how the fund is classified. This is the area most worth professional advice, and the FBAR and Form 8938 apply to super in any case. For more, see NSKT Global's guide to the U.S.-Australia tax treaty.

Temporary Visa Holders

Americans on temporary visas are generally not taxed in Australia on income earned in another country, apart from foreign employment income earned while a temporary resident. That helps in Australia, but it leaves U.S. tax on, say, U.S. investment income with no Australian tax to credit against it.

An Australian Spouse

A spouse who is not a U.S. person has no U.S. filing duty of their own. You can choose to treat them as a U.S. resident for joint filing, which puts their worldwide income on your return, or file separately, so compare both ways before choosing.

Missed Filings

Many Americans in Australia learn about their U.S. duties years late, often when a bank asks for a U.S. tax identification number. Catching up on American expat taxes in Australia is often less costly than people fear, because the foreign tax credit may mean little or no tax is owed for the missed years. If your failure was non-willful, the Streamlined Filing Compliance Procedures let you catch up with three years of returns and six years of FBARs, with no penalty for people living abroad. See NSKT Global's guide to the Streamlined Filing Compliance Procedures. If you are weighing renunciation instead, read NSKT Global's guide to U.S. citizenship exit taxes first.

A Quick Test: What Do You Need to Do?

1. Are you a U.S. citizen or green card holder? If yes, you file Form 1040 once you meet the threshold, wherever you live.
2. Did Australia tax your income? Claim the foreign tax credit on Form 1116, and decide your paid-or-accrued method on your first return.
3. Is your Australian assessment still pending? Use the June 15 deadline for Americans in Australia, and file Form 4868 by June 15 if you need October 15.
4. Do you have Australian bank accounts or super? File the FBAR, and check Form 8938.
5. Are you self-employed? Request your totalization exemption letter.
6. Do you have U.S.-source income or retirement withdrawals? Ask whether the credit reaches them.
7. Have you missed any years? Use the Streamlined procedures before the IRS contacts you.

U.S. expat taxes in Australia become routine once you know which calendar you are working to, and the same checklist works every year. For the full picture of both systems, see NSKT Global's guide to dual U.S. citizen tax obligations.

How NSKT Global Can Help

Handling U.S. taxes for Americans in Australia across two tax years does not have to be a scramble. NSKT Global prepares the U.S. tax return for Americans in Australia, works out the paid-or-accrued choice on your first Form 1116, times your extensions around your Australian assessment, handles the FBAR, Form 8938, super, and PFIC reporting, and arranges totalization exemption letters for the self-employed. We also guide clients who missed prior years through the Streamlined procedures, a common route for clearing a backlog of American expat taxes in Australia. Book a consultation and we will map out your filing calendar.

People Also Ask

Q. Do Americans in Australia pay U.S. taxes?

You must file a U.S. return every year you meet the filing threshold, but you often owe little or no U.S. income tax because the foreign tax credit offsets it. You can still owe on capital gains, super, self-employment income, or income Australia does not tax.

Q. Do I have to file a U.S. tax return if I live in Australia?

Yes. The U.S. tax filing requirements for expats in Australia are the same as for Americans at home: U.S. citizens and green card holders file Form 1040 on worldwide income. For 2025, the threshold is $15,750 for a single filer and $31,500 for joint filers, with $5 for married filing separately and $400 of net self-employment earnings.

Q. What is the June 15 deadline for Americans in Australia?

It is the automatic two-month extension for people whose tax home and main place of business are outside the U.S. on April 15. You attach a statement to your return, and interest still runs on unpaid tax from April 15.

Q. How do I file when the U.S. and Australian tax years are different?

U.S. tax filing from Australia works on the calendar year. Report your income on that basis, claim the foreign tax credit in the U.S. year in which you pay or accrue the Australian tax, and use the extensions to wait for your Australian assessment. Unused credit carries back one year and forward ten.

Q. Do I pay tax twice on my Australian income?

Not usually. Double taxation between the U.S. and Australia is relieved by the foreign tax credit, the Foreign Earned Income Exclusion, the treaty, and the totalization agreement, and the credit usually wins in Australia.

Q. Should I use the paid or the accrued method for the foreign tax credit?

Cash-basis taxpayers claim the credit when they pay the tax by default, and can elect to claim it when the tax accrues by checking the "Accrued" box on a timely filed original Form 1116. The election is permanent, so decide it on your first return.

Q. What makes U.S. expat taxes in Australia different from filing at home?

You work to two calendars, July to June in Australia and January to December in the U.S., so the final Australian tax on half of each year is not known until after the U.S. deadline. You also claim the foreign tax credit instead of paying twice, and you file reports such as the FBAR and Form 8938 alongside the return.

Q. What are the FBAR requirements in Australia?

The FBAR requirements in Australia are the same as anywhere else. You file FinCEN Form 114 if your foreign accounts exceeded $10,000 combined at any point in the year, and bank accounts, brokerage accounts, and super all count. Above higher thresholds, Form 8938 also applies.

Q. Can I use the Foreign Earned Income Exclusion for Americans in Australia?

Yes, if you pass the bona fide residence or physical presence test. The Foreign Earned Income Exclusion for Americans in Australia is $130,000 for 2025 and $132,900 for 2026, but it rarely beats the credit because Australian rates are higher, and you cannot credit tax on excluded income.

Q. Can Australian tax offset U.S. tax on my U.S. income?

Not automatically. The foreign tax credit cannot reduce U.S. tax on U.S.-source income, although the treaty can re-source some income so that it can. Ask your preparer to run the calculation.

Q. Is the U.S. Social Security taxed in Australia?

Generally not. Australia does not treat it as assessable income, but it stays taxable on your U.S. return.

Q. Do I need to pay estimated tax while living in Australia?

If you expect to owe U.S. tax after credits and withholding, estimated tax rules can apply, and no filing extension postpones those payments. If the foreign tax credit brings your U.S. tax to zero, there is usually nothing to estimate.

Q. Do I owe U.S. state tax if I live in Australia?

It depends on your last state. Some states keep taxing former residents who keep ties there, so check your state's rules and cut the ties you can.

Q. Does the U.S.-Australia tax treaty stop me filing a U.S. return?

No. The saving clause lets the U.S. tax citizens on worldwide income. The treaty provides the credit rules that prevent double tax, but you still file.

Q. What if I file late or never filed?

If your failure was non-willful, the Streamlined Filing Compliance Procedures let you catch up without penalty if you live abroad. Act before the IRS contacts you.