How Moving Abroad Changes Your US Tax Profile

Moving to Australia does not usually end your US tax obligations. For US citizens and Green Card holders, the bigger change is that a second tax system is being introduced to your normal financial landscape. Your Australian salary, bank accounts, investments, and retirement savings can all affect how your US return looks. US citizens and resident aliens abroad generally remain subject to US tax on worldwide income.

You may be living in Melbourne, paid in Australian dollars, and paying Australian income tax, yet the Internal Revenue Service generally still expects you to report that income. A trusted US tax service in Australia can be useful here, especially when the move brings financial arrangements you never had to think about while living in the US.

Here are 5 changes you will expect when moving to Australia from the US:

Your Australian income becomes part of your US tax picture

Once you move, income earned in Australia generally remains relevant to your US return. That can include wages from an Australian employer, freelance income, rental income, dividends, and investment earnings.

Suppose you move to Sydney and take a local job. The fact that your employer is Australian and your salary never touches a US bank account does not, by itself, take that income outside the US tax system. Reporting it, however, does not automatically mean paying tax twice.

Paying Australian tax changes how you manage double taxation

For many expats, the next step is working out which US tax relief fits. The Foreign Tax Credit (FTC) can allow qualifying foreign income taxes to offset US tax on the same income. The Foreign Earned Income Exclusion (FEIE) is another option for eligible taxpayers; for the 2025 tax year, the maximum exclusion is $130,000 per qualifying person.

Neither option is universally “better.” Australia’s tax rates can make the FTC worth considering in many cases, but income type, timing, and future plans matter. The US-Australia tax treaty may also affect certain categories of income, although US citizens should not assume a treaty automatically removes their US tax obligations.

Australian bank accounts can create new reporting requirements

A move also changes the reporting side of your tax profile. If the aggregate value of your foreign financial accounts exceeds $10,000 at any point during the calendar year, you may need to file an FBAR with FinCEN.

Form 8938 is separate and applies when specified foreign financial assets exceed the relevant threshold. For qualifying taxpayers living abroad, those thresholds are higher than for taxpayers living in the US.

These are disclosure requirements rather than separate taxes, but overlooking them can still create compliance issues.

Australian investments can add another layer of complexity

Here is where ordinary financial decisions can become less ordinary. Some Australian investment funds may meet the US definition of a Passive Foreign Investment Company (PFIC), depending on their structure, income, and assets. For a US investor, that can potentially mean additional Form 8621 reporting and more complicated tax treatment.

Australian superannuation deserves separate US tax analysis too. Its US treatment does not necessarily mirror its Australian treatment and can depend heavily on the particular arrangement and taxpayer. Self-managed super funds can add another layer of complexity, especially where the fund structure or underlying investments introduce additional US reporting questions.

So, before buying an Australian managed fund simply because it looks tax-efficient locally, checking the US consequences first can save considerable trouble later.

Your US filing timeline may change

Living abroad can also change when you file. For the 2025 tax year, the regular US individual filing deadline was April 15, 2026. Qualifying taxpayers living and working overseas generally received an automatic two-month extension to June 15, 2026.

There is a catch: interest generally runs from April 15 on unpaid federal income tax, even when the overseas extension applies.

Review your tax profile after the move

Moving to Australia changes more than your address. It can reshape what income you report, how you deal with double taxation, which accounts you disclose, and how investments are treated for US purposes.

That does not mean every expat needs an elaborate tax strategy. But before making major investment, retirement, or business decisions in Australia, checking the US side first can prevent an ordinary financial choice from becoming an expensive compliance problem later.