US Stocks Tax Guide for Australians
Everything you need to know about your Australian tax obligations when investing in US stocks — CGT, dividend withholding, the W-8BEN form, ATO reporting, and how the Australia-US tax treaty works.
Key takeaways
- ·US shares are taxed in Australia like any other investment — CGT applies when you sell at a profit, and dividends are assessable income when received.
- ·Hold for 12+ months to qualify for the 50% CGT discount (from 1 July 2027 this changes to cost base indexation with a 30% minimum tax).
- ·US dividends are withheld at 15% under the Australia–US tax treaty if you've submitted a W-8BEN form — without one, the US withholds 30%.
- ·The US withholding tax is fully creditable against your Australian tax bill — you won't pay double on the same income.
- ·Temporary residents on a temporary visa are generally only taxed on Australian-source income — capital gains on US shares are typically not assessable.
- ·Hello Stake provides an annual tax report in the app after 30 June each year to simplify your return preparation.
Not tax advice. This guide is for general educational purposes only and does not constitute personal tax advice. Tax obligations depend on your individual circumstances. For advice specific to your situation, consult a registered tax agent or accountant. ATO rules change — verify current requirements at ato.gov.au.
The basics: how Australian investors are taxed on US stocks
As an Australian tax resident, the ATO taxes you on your worldwide income — not just income earned in Australia. This means your US stock investments are subject to Australian tax law, regardless of whether the shares are held through an Australian broker (like Hello Stake) or directly with a US broker.
There are two main tax events when you hold US stocks as an Australian resident:
Capital Gains Tax (CGT)
Triggered when you sell US shares at a profit. Your gain is the AUD sale proceeds minus your AUD cost base (purchase price + brokerage). The gain is included in your assessable income and taxed at your marginal rate — with a 50% discount if you held for over 12 months.
Dividend Income
US dividends are assessable income in Australia. The US withholds tax at the source (15% under the Australia-US tax treaty, if you've completed the W-8BEN form). This withholding is creditable against your Australian tax, preventing double taxation.
Capital Gains Tax on US shares in detail
How CGT is calculated
Your capital gain is: AUD sale proceeds − AUD cost base. Both amounts must be converted to AUD using the exchange rate at the time of each transaction. The ATO accepts the Reserve Bank of Australia (RBA) exchange rates for this purpose.
Your cost base includes: the purchase price in AUD, plus brokerage paid to buy (Hello Stake's US$3 fee), plus any FX conversion costs directly related to the purchase. These reduce your capital gain. Similarly, brokerage paid when you sell reduces your sale proceeds.
The 12-month CGT discount
If you hold US shares for more than 12 months before selling, only 50% of the capital gain is included in your assessable income (Section 115-100 ITAA 1997). This is one of the most significant tax concessions available to Australian investors and a key reason why long-term buy-and-hold investing is tax-advantaged in Australia.
Worked example: CGT with 12-month discount
Bought: 10 shares of Apple at US$180 = A$2,718 cost base (at 0.66 AUD/USD)
Sold after 18 months: 10 shares at US$230 = A$3,455 proceeds (at 0.665 AUD/USD)
Brokerage (buy + sell): ≈ A$10
Capital gain: A$3,455 − A$2,718 − A$10 = A$727
After 50% CGT discount: A$363.50 assessable
Tax at 32.5% marginal rate: ≈ A$118
Tax at 37% marginal rate: ≈ A$134
Example only. Exchange rates and tax rates simplified for illustration. Does not account for FX conversion costs or Medicare levy.
Less than 12 months held
If you sell within 12 months of purchase, the full gain is assessable — no 50% discount. This makes short-term trading in US shares considerably more tax-inefficient than long-term holding. It's a significant consideration for active traders.
Capital losses
If you sell US shares at a loss, the capital loss can offset capital gains from other assets in the same year (ASX shares, property, crypto, etc.). Net capital losses cannot offset ordinary income — they carry forward indefinitely to offset future capital gains. There is no time limit on carrying forward capital losses.
US dividends and withholding tax
How US dividend withholding works
When a US company pays a dividend to a non-US investor, the US IRS withholds tax at the source before the payment reaches you. The withholding rate depends on whether your broker has a completed W-8BEN form for you:
With W-8BEN completed: 15%
Under the Australia-US Tax Treaty (Article 10), dividends paid to Australian residents who have completed the W-8BEN form are withheld at 15%. Hello Stake collects this form during account setup.
Without W-8BEN: 30%
The US default withholding rate for non-residents is 30%. This applies if your broker doesn't have a valid W-8BEN on file. Ensure your W-8BEN is completed and current — it must be renewed every 3 years.
Reporting dividends on your Australian return
You must report the gross dividend (before US withholding) as foreign income on your Australian tax return. The 15% US withholding already paid can be claimed as a Foreign Income Tax Offset (FITO), which reduces your Australian tax bill dollar-for-dollar.
Worked example: dividend taxation
Gross US dividend received: US$100 (≈ A$150)
US withholding at 15%: US$15 withheld
Amount received by you: US$85 (≈ A$127.50)
Report on ATO return: A$150 gross foreign income
Australian tax at 37% marginal rate: A$55.50
Less FITO (15% withheld = ≈A$22.50): − A$22.50
Net Australian tax payable: ≈ A$33
Total tax paid (US + AU combined): ≈ A$55.50 (your full marginal rate on the gross)
Simplified example. Medicare levy not included. Exchange rate illustrative only.
Key takeaway: The FITO system prevents genuine double taxation. You effectively pay your Australian marginal rate on the gross dividend — no more, no less. The US withholding is just prepayment of part of that tax.
Also investing in ASX shares or ETFs? Australian dividends work very differently — instead of a withholding system, the ATO uses franking credits, which can reduce or eliminate your tax on ASX dividends (and sometimes generate a cash refund). See the complete franking credits guide →
The W-8BEN form explained
The W-8BEN (Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting) is a US IRS form that certifies you are not a US tax resident. Completing it is one of the most important administrative steps when investing in US stocks as an Australian.
Hello Stake collects W-8BEN information during the account sign-up process — you fill in your details in the app and they handle the submission to their US clearing broker (DriveWealth). You don't interact with the IRS directly.
What it does
Certifies to the US broker that you are not subject to US tax residency rules, entitling you to the reduced 15% dividend withholding rate under the Australia-US Double Tax Agreement instead of the default 30%.
When to complete it
During Hello Stake account setup. If you haven't completed it, check your account settings — it's a significant financial difference: 15% vs 30% of every dividend you receive.
How long it's valid
W-8BEN forms are valid for 3 years from the date of signing, or until your circumstances change (e.g. you become a US tax resident). Hello Stake will prompt you to renew it when it expires. If your form expires without renewal, your broker defaults back to 30% withholding.
Does not affect CGT
The W-8BEN only relates to US withholding on dividends and certain other US-sourced income. It does not affect how Australia taxes your capital gains — CGT is calculated and reported on your Australian return regardless of the W-8BEN.
ATO reporting obligations
What you must report each year
Capital gains and losses
Report all realised capital gains and losses from US share sales in the capital gains section of your tax return. Include the AUD cost base and AUD proceeds for each sale.
Foreign income (dividends)
Report all US dividends as foreign income — gross amount in AUD before withholding. Claim the 15% US withholding as a Foreign Income Tax Offset.
Foreign tax offsets
Use the Foreign Income Tax Offset worksheet to claim credit for US tax withheld on dividends. Keep records of all withholding from your broker's statements.
Foreign assets (if over $50,000)
If the total value of your foreign assets exceeds A$50,000 at any point during the year, you must complete the Foreign Investments and Assets section of your return. The ATO uses this for risk profiling, not additional taxation.
Records you must keep
The ATO requires you to keep CGT records for 5 years after you dispose of an asset. For shares, this means:
- Date of purchase and the AUD cost (including brokerage and FX costs)
- Date of sale and the AUD proceeds (less brokerage)
- Exchange rates used to convert USD amounts to AUD
- Broker confirmation statements for each transaction
- Dividend statements showing gross amount and withholding tax deducted
- Hello Stake annual tax report (download and save each financial year)
Hello Stake tax report: Hello Stake generates an annual tax report available in the app after 30 June each year. It summarises your realised gains, losses, dividend income, and withholding tax paid. Download and share this with your accountant — it significantly simplifies tax preparation.
The Australia-US Tax Treaty
Australia and the United States have a Double Tax Agreement (DTA) that prevents Australians from being taxed twice on US-source income. The treaty was signed in 1982 and updated in 2001. Key provisions relevant to retail investors:
Dividends (Article 10)
US dividends paid to Australian residents are subject to a maximum 15% US withholding tax (reduced from the standard 30%). This requires a completed W-8BEN on file with your broker. The 15% withheld is creditable against your Australian tax via the FITO system.
Capital gains (Article 13)
Capital gains from selling US shares are generally only taxable in Australia — not in the US — for Australian residents who hold shares as investments (not as part of a US business). This means you don't pay US CGT when you sell US shares through a platform like Hello Stake.
Common mistakes Australian investors make
Not completing the W-8BEN form
Results in 30% withholding instead of 15%. Check your Hello Stake account settings — if you're unsure whether you've completed it, contact Stake support.
Forgetting to report US dividends
The ATO receives international financial data through the Common Reporting Standard (CRS) — it's increasingly aware of foreign income. Always report all foreign dividends, even if the amounts seem small.
Using today's exchange rate instead of the rate at time of transaction
CGT calculations must use the exchange rate at the date of purchase and the date of sale. Use the RBA's historical exchange rate data (rba.gov.au) or your broker's transaction records.
Not tracking the cost base of fractional shares
Fractional share purchases on Stake each create their own CGT event when sold. Your cost base must track each purchase separately. Use your Stake transaction history to build a complete record.
Treating unrealised gains as taxable
CGT only applies when you sell (or otherwise dispose of) shares. Holding US shares that have gone up in value does not create a tax obligation — only the sale does.
Temporary residents: are you taxed on US shares?
If you are a temporary resident of Australia — meaning you hold a temporary visa (such as a 482, 485, or 457) and your spouse (if you have one) is not an Australian permanent resident or citizen — your tax obligations on US shares are significantly different from those of permanent residents and citizens.
Under Division 768 of the Income Tax Assessment Act 1997, temporary residents are only taxed on Australian-source income. Foreign-source income — including capital gains on assets that are not "taxable Australian property" — is generally not assessable. US shares listed on the NYSE or NASDAQ are not taxable Australian property.
Generally NOT taxable for temporary residents
Capital gains when selling US-listed shares (NYSE, NASDAQ)
US dividends received from foreign companies
Interest income from foreign bank accounts
Still taxable for temporary residents
·Australian-source income (salary, wages, Australian dividends)
·Capital gains on taxable Australian property (e.g., Australian real estate, some Australian shares)
When your visa status changes: If you become a permanent resident or citizen, you are deemed to have acquired all your foreign assets (including US shares) at their market value on the date your status changes. This becomes your cost base going forward. Gains accrued during your temporary residence period are not taxed; gains from that date forward are.
Get specific advice: Temporary resident tax rules are complex and depend on your exact visa subclass and personal circumstances. The ATO publishes guidance on ato.gov.au — search "foreign income exemption for temporary residents". A registered tax agent familiar with expat and temporary resident situations is the right person to advise on your specific position.
Frequently asked questions
Investing in US stocks from Australia?
Hello Stake provides an annual tax report to help with your return. New accounts opened with referral code jaymem884 receive a free US stock + A$10 trading credit when you fund within 24 hours.
Open Hello StakeNot financial or tax advice. Consult a registered tax agent for advice specific to your situation.
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