US Expats Face 37% Top Tax Rate in Australia

The Australian tax system hits high earners harder than the US federal system alone. Australia's top marginal income tax rate is 37% (plus a 2% Medicare levy), compared to the US federal top rate of 37% without state tax included. If you're moving from a low-tax US state like Texas or Florida, this is a significant jump. Add in Medicare levy, and you're looking at 39% on income over AUD 180,000 (as of 2026). This is the first shock most American expats encounter, and it affects your salary negotiation, superannuation strategy, and overall financial planning from day one.

The Australian Taxation Office (ATO) considers you a tax resident if you're in Australia on a permanent visa or have been here for more than 183 days in a financial year. Once you're a tax resident, you must declare worldwide income, not just Australian earnings. This is similar to US citizenship-based taxation, but the rates and thresholds are completely different.

Tax Residency and Your First Year

Your tax residency status depends on your visa type and time in Australia. If you arrive on a permanent visa (skilled migration, partner visa, or family sponsorship), you're a tax resident from day one. If you're on a temporary visa (skilled temporary, working holiday, or student visa), you become a tax resident after 183 days in Australia during a financial year, or if you intend to stay permanently.

The Australian financial year runs from 1 July to 30 June, not January to December like the US. This catches many Americans off guard. If you arrive in September on a permanent visa, you'll need to file a tax return for the partial financial year (1 July to 30 June of the following year) within two months of the end of that financial year.

You'll need an Australian Tax File Number (TFN) to work legally and pay tax. Apply for one at the ATO website or at a Service NSW centre. Processing takes about 2 weeks. Your employer will ask for this before your first pay day.

Superannuation: Australia's Mandatory Retirement Savings

This is a major difference from the US 401(k) system. Your Australian employer must contribute 12% of your gross salary into a superannuation fund (as of 1 July 2025). You cannot access this money until you reach preservation age (between 55 and 60, depending on your birth year). There's no equivalent to the US early withdrawal penalty because you simply cannot withdraw it early, with rare exceptions (severe financial hardship, compassionate grounds).

You can choose which superannuation fund receives your employer's contributions, or accept their default fund. Many funds charge 0.5% to 1.5% in annual fees. Compare funds on the ATO's YourSuper comparison tool before starting work. If you leave Australia on a temporary visa, you can claim your superannuation as a departing Australia superannuation payment (DASP), but only if you're not an Australian citizen or permanent resident.

If you're self-employed or a contractor, you must arrange your own superannuation contributions. The ATO expects you to contribute at least 12% of your net profit into a registered superannuation fund.

Medicare: Eligibility and Private Health Insurance

This is where many Americans make costly mistakes. Medicare is not available to temporary visa holders. If you're on a skilled temporary visa (subclass 482 or 487), working holiday visa (subclass 417 or 462), or student visa (subclass 500), you must have private health insurance. Medicare is only available to Australian citizens, permanent residents, and people from countries with reciprocal health care agreements (not the US).

Private health insurance for temporary visa holders costs between AUD 150 and 400 per month, depending on coverage level and age. Overseas Student Health Cover (OSHC) is mandatory for student visa holders and costs around AUD 600 to 1,200 per year. If you're on a skilled temporary visa, you'll need general health insurance from a private provider like Bupa, Medibank, or NIB.

If you're moving on a permanent visa or partner visa, you become eligible for Medicare immediately upon arrival. However, there's a 12-month waiting period before Medicare covers most services. During this waiting period, you still need private health insurance. After 12 months, you can access Medicare for free or low-cost public hospital care and GP visits.

Register for Medicare at a Service NSW centre or online through the Services Australia website. You'll need your passport, proof of residency (rental agreement, utility bill), and your TFN. Processing takes about 2 weeks.

The Medicare Levy and Private Health Insurance Rebate

Once you're eligible for Medicare, you pay the Medicare levy (2% of taxable income) automatically through tax. If you're a permanent resident or citizen and don't have private health insurance, you also pay the Medicare levy surcharge (1% to 1.5% of income, depending on age and income). This surcharge is designed to encourage private health insurance uptake. If you earn over AUD 180,000 (single) or AUD 360,000 (family), you lose the private health insurance rebate entirely, so the maths change.

Setting Up Australian Banking

You'll need an Australian bank account to receive your salary and pay bills. The big four banks are Commonwealth Bank, Westpac, ANZ, and NAB. Smaller banks like UBank (owned by NAB), ING, and Macquarie often have lower fees. Opening an account takes 1 to 2 weeks.

You'll need your passport, proof of residency (rental agreement, utility bill, or a letter from your employer), and your TFN. Some banks accept a temporary address (like a hostel or Airbnb booking) if you've just arrived. Commonwealth Bank and Westpac have branches in most suburbs and shopping centres. Online banks like UBank and ING are faster but require a video call to verify your identity.

Transferring Money from the US

Transferring USD to AUD is expensive if you use your bank's international transfer service. Commonwealth Bank charges around AUD 12 to 15 per transfer, plus a poor exchange rate (usually 1.5% to 2% worse than the mid-market rate). For large amounts, use a specialist money transfer service like Wise (formerly TransferWise), OFX, or Remitly. These charge 0.5% to 1% and offer mid-market exchange rates. A USD 10,000 transfer costs around AUD 50 to 100 in fees, versus AUD 200 to 300 with a bank.

Set up a US bank account that allows international transfers (most do). Link it to your Australian account via Wise or OFX. Transfer your initial funds, then set up direct deposit from your Australian employer into your Australian account.

Keep your US bank account open for at least 12 months. You may still receive tax refunds, insurance payouts, or other payments from the US. Closing it too early can cause problems.

Credit Cards and Credit History

Your US credit score does not transfer to Australia. You'll start with no credit history. Australian banks use a different credit reporting system (Equifax, Experian, Illion). You can apply for a credit card immediately, but expect a lower limit (AUD 1,000 to 3,000) until you've built local credit history over 6 to 12 months.

Use your credit card for everyday purchases and pay it off in full each month. This builds your credit score quickly. After 6 months, you can apply for a higher limit or a home loan.

Tax Obligations and Reporting

You must file an Australian tax return each financial year if you earned more than the tax-free threshold (AUD 18,200 as of 2026). The ATO sends a pre-filled tax return in July. You can lodge it online via myTax (free) or use a tax agent (costs AUD 300 to 500). Most Americans use a tax agent because Australian tax rules are unfamiliar and penalties for errors are steep (up to 75% of the tax owed).

If you're still a US citizen or green card holder, you must also file a US tax return and report your worldwide income to the IRS. You can claim the Foreign Earned Income Exclusion (FEIE) to exclude up to USD 120,000 of foreign earned income (as of 2026), but you still must file. Many Americans miss this and face penalties later. Hire a US tax accountant who understands expat taxation (firms like MyExpatTaxes or Bright!Tax specialise in this). Expect to pay USD 500 to 1,500 for both US and Australian tax returns.

The US and Australia have a tax treaty to prevent double taxation. You can claim foreign tax credits on your US return for tax paid to Australia, and vice versa. This is complex, so professional help is essential.

Reporting Foreign Bank Accounts

If you're a US citizen or green card holder, you must report all foreign bank accounts to the US Treasury via FBAR (Foreign Bank Account Report) if the combined balance exceeds USD 10,000 at any point during the year. This is separate from your tax return and is filed via FinCEN. Penalties for not filing are severe (up to 50% of the account balance). Your Australian bank account must be reported.

Useful Official Sources

Frequently Asked Questions

Do I need private health insurance if I'm moving to Australia on a permanent visa?

Yes, for the first 12 months. Medicare has a 12-month waiting period for permanent residents, so you must have private health insurance during this time. After 12 months, you can access Medicare for free public hospital care and GP visits.

What is the Australian tax rate compared to the US?

Australia's top marginal tax rate is 37% plus a 2% Medicare levy (39% total) on income over AUD 180,000 (as of 2026). This is higher than the US federal rate alone, though US state taxes vary. You'll also be taxed on worldwide income if you're a tax resident.

How much does my employer contribute to superannuation?

Your employer must contribute 12% of your gross salary into a superannuation fund (as of 1 July 2025). You cannot access this money until you reach preservation age (55 to 60, depending on birth year).

Do I still need to file a US tax return if I move to Australia?

Yes, if you're a US citizen or green card holder, you must file a US tax return reporting worldwide income. You can claim the Foreign Earned Income Exclusion to exclude up to USD 120,000 of foreign earned income (as of 2026), but filing is mandatory. You must also report all foreign bank accounts via FBAR if balances exceed USD 10,000.

How do I open an Australian bank account?

Visit a bank branch or apply online with your passport, proof of residency (rental agreement or utility bill), and your Tax File Number (TFN). Processing takes 1 to 2 weeks. Online banks like UBank and ING are faster but require a video call for identity verification.

What's the cheapest way to transfer money from the US to Australia?

Use a specialist money transfer service like Wise, OFX, or Remitly instead of your bank. These charge 0.5% to 1% and offer mid-market exchange rates, versus 1.5% to 2% worse rates plus AUD 12 to 15 fees from banks.

This is general information only. It is not legal, migration, financial, tax, medical, or professional advice. Always check official sources before acting.