ATO Foreign Income Tax Offset Calculator
Estimate your foreign income tax offset using an Australia-focused methodology based on foreign tax paid, net foreign income and your estimated Australian tax on taxable income. This premium calculator is designed to help you model the common FITO cap rule before lodging your return.
Calculator Inputs
Enter annual amounts in Australian dollars. For practical use, convert foreign amounts to AUD using the exchange rate method accepted for your tax records.
Estimated Results
This estimate applies the common FITO approach: if foreign tax paid is A$1,000 or less, the available offset is generally the foreign tax paid. If it exceeds A$1,000, the cap is estimated as Australian tax on taxable income multiplied by net foreign income divided by taxable income.
Your result will appear here
Enter your figures and click Calculate FITO.
Expert Guide to the ATO Foreign Income Tax Offset Calculator
The foreign income tax offset, often shortened to FITO, is one of the most important tax concepts for Australian residents who earn income from overseas investments, employment, trusts, partnerships, pensions, royalties or business activities. If you have already paid tax in another country on income that is also assessable in Australia, the offset is designed to reduce the risk of double taxation. An ATO foreign income tax offset calculator can help you estimate your likely claim before you complete your return, reconcile withholding statements, or speak with your adviser.
At a high level, the rule sounds simple: if you paid foreign tax on income that is taxed in Australia, you may be able to claim a tax offset. In practice, the amount you can claim depends on how much foreign tax was paid, whether the amount qualifies under Australian law, whether your figures are stated in Australian dollars, whether related deductions have already been netted off, and whether the FITO cap calculation applies. This page is built to make those moving parts easier to understand.
What the foreign income tax offset is intended to do
Australia taxes residents on worldwide income. That means foreign salary, interest, dividends, capital gains and some distributions may need to be disclosed in your Australian tax return. If the same income has already been taxed overseas, you could otherwise be taxed twice. The FITO is intended to reduce that problem by allowing an offset for eligible foreign income tax paid.
- You must generally have included the relevant foreign income in your Australian assessable income.
- The tax must usually be an amount of foreign income tax legally imposed by a foreign law.
- The amount claimed cannot exceed the foreign tax paid and may also be limited by the FITO cap.
- Amounts should be converted into Australian dollars using an accepted exchange rate approach supported by your records.
How this calculator estimates your offset
This calculator follows a practical framework used by many taxpayers when doing an initial estimate:
- If your total foreign tax paid is A$1,000 or less, the estimated offset is generally the amount of foreign tax paid.
- If your foreign tax paid is more than A$1,000, the calculator estimates the cap by working out your Australian tax on taxable income and then attributing a proportion of that tax to your net foreign income.
- The estimated cap formula used is: Australian tax payable × net foreign income ÷ taxable income.
- Your estimated FITO is then the lower of foreign tax paid and the estimated cap.
This is very useful for planning, but it is still an estimate. In a full tax return, additional details can affect the result, such as offsets, levy outcomes, foreign loss treatment, timing issues, treaty interactions, trust distributions, and the exact composition of foreign source amounts.
Why net foreign income matters so much
The phrase net foreign income is critical. It does not mean your gross overseas receipts. It usually refers to your foreign income after deducting expenses that relate to earning that foreign income. If someone enters gross foreign income rather than a net figure, the cap estimate can be overstated and the resulting offset may look larger than it should be. That is why this calculator asks whether your net foreign income has already been adjusted for related deductions.
Common examples of deductions that may reduce foreign income include:
- Interest expenses linked to overseas investments
- Investment management fees
- Borrowing costs
- Depreciation or capital allowance style deductions where permitted
- Professional fees directly related to deriving the foreign income
Resident individual tax rates used in the estimate
Because the FITO cap depends on your Australian tax on taxable income, the calculator needs a tax rate model. To keep the tool practical, it uses resident individual tax rates for the selected year. The table below summarises the headline resident tax scales used in this calculator.
| Tax year | Taxable income band | Resident tax rate used for estimate |
|---|---|---|
| 2024-25 | $0 to $18,200 | Nil |
| 2024-25 | $18,201 to $45,000 | 16% |
| 2024-25 | $45,001 to $135,000 | 30% |
| 2024-25 | $135,001 to $190,000 | 37% |
| 2024-25 | Over $190,000 | 45% |
| 2023-24 | $0 to $18,200 | Nil |
| 2023-24 | $18,201 to $45,000 | 19% |
| 2023-24 | $45,001 to $120,000 | 32.5% |
| 2023-24 | $120,001 to $180,000 | 37% |
| 2023-24 | Over $180,000 | 45% |
For an estimate, this page also includes a 2% Medicare levy assumption in the Australian tax calculation. In real returns, levy reductions or exemptions can apply in some circumstances. That means your actual cap can differ from this estimate.
A simple worked example
Suppose an Australian resident has total taxable income of $120,000, including $15,000 of net foreign income. They paid $3,200 in foreign tax on that income. Under the 2024-25 rates, the calculator first estimates Australian tax on taxable income, then applies the proportion:
Estimated FITO cap = Australian tax on taxable income × $15,000 ÷ $120,000
If the cap works out to $2,925, the estimated offset would be the lower of $3,200 and $2,925, so the likely claim would be $2,925. The balance of foreign tax paid would not generate a higher Australian offset under the cap.
Common situations where people use an ATO foreign income tax offset calculator
- Employees who spent part of the year working overseas and had local payroll tax withheld
- Investors receiving foreign dividends with non-resident withholding tax deducted
- Taxpayers with overseas interest income from foreign bank accounts or bonds
- Beneficiaries of trusts that distribute foreign source income
- Australian residents receiving pensions or annuities from another country
- Individuals with overseas capital gains that are also relevant to Australian tax reporting
Records you should gather before calculating
Your estimate is only as reliable as the source data. Before using the calculator, assemble documents that support both the amount of foreign income and the amount of foreign tax actually paid.
- Foreign income statements, payslips, dividend summaries or brokerage reports
- Withholding certificates or annual tax summaries from the foreign payer
- Bank statements showing tax withheld or tax paid
- Exchange rate records and the method used to convert to Australian dollars
- Evidence of expenses and deductions related to earning the foreign income
- Prior correspondence or assessments if foreign tax was refunded or adjusted later
Real comparison data that matters for planning
One reason FITO outcomes change from year to year is that Australian resident tax rates change. The tax scale changes introduced from 1 July 2024 can alter the estimated cap for the same income profile. The table below compares a few key thresholds relevant to resident individuals.
| Feature | 2023-24 | 2024-25 | Planning impact for FITO estimates |
|---|---|---|---|
| Tax-free threshold | $18,200 | $18,200 | No change at the low end |
| Second marginal rate | 19% | 16% | Lower tax may reduce the cap for some taxpayers |
| Mid-rate threshold ceiling | $120,000 at 32.5% | $135,000 at 30% | Broader middle band changes estimated Australian tax payable |
| Top threshold before 45% | $180,000 | $190,000 | Can materially affect higher income cap calculations |
| General Medicare levy assumption in this tool | 2% | 2% | Included for estimation only |
What this calculator does well
This tool is especially useful for first-pass tax planning. It gives you a structured way to test scenarios, compare years, and understand whether your likely offset is constrained by foreign tax paid or by the FITO cap. It is also helpful if you want to know whether an increase in overseas tax withheld will actually produce a higher Australian offset. In many cases, it does not, because the cap becomes the limiting factor.
What this calculator does not replace
No generic online calculator can replace a complete assessment under Australian tax law. You may need tailored advice if your position includes:
- Foreign source income flowing through a trust or partnership
- Income subject to a double tax agreement with special treaty articles
- Foreign tax paid in a different year to the income recognition year
- Refunds, credits, rebates or carry-forward misconceptions relating to foreign tax
- Capital gains calculations involving foreign currency movements
- Temporary resident, non-resident, company or superannuation tax issues
Authoritative sources you should review
For official guidance, review the Australian Taxation Office material on foreign income tax offsets and individual tax rates, and cross-check any treaty or international tax detail that affects your income type. Helpful sources include:
Best practice tips before lodging
- Reconcile foreign tax paid to the exact income included in your Australian return.
- Use consistent exchange rates and keep evidence of the methodology.
- Confirm whether your foreign income figure is gross or net of related deductions.
- Check whether any foreign tax was refunded or is still disputed.
- Review whether treaty provisions affect the taxing rights for that income type.
- If the amount is significant, obtain personalised advice or a review before lodging.
Used properly, an ATO foreign income tax offset calculator can save time, improve forecasting and reduce surprises at tax time. The most important step is making sure your inputs are conceptually correct. If your taxable income, net foreign income and foreign tax paid are accurate, the estimate becomes far more valuable. If your situation is straightforward, the result can be a very practical indicator of your likely claim. If your facts are more complex, the calculator remains a useful planning tool, but it should be paired with official guidance and professional review.