Foreign family trust distributions and Section 99B: when a gift from overseas family becomes taxable income

For Australian retirees with family connections in the UK, US, Canada, New Zealand, or other foreign jurisdictions, distributions from overseas family trusts are a common feature of late-life finances. A parent's testamentary trust in the UK pays out over several years to the Australian-resident child. A Canadian discretionary family trust supplements the retirement income of a sibling who emigrated. A US trust closes and distributes residual assets to scattered beneficiaries. Each of these distributions arrives in the retiree's bank account with the family understanding that this is a gift, an inheritance, or routine family financial support — and many retirees assume the receipt is therefore not taxable in Australia. Section 99B of the Income Tax Assessment Act 1936 turns that assumption on its head. For Australian-resident beneficiaries, distributions from foreign trusts are generally fully assessable as ordinary income at the retiree's marginal tax rate, with no CGT discount and limited exclusions (https://classic.austlii.edu.au/au/legis/cth/consol_act/itaa1936240/s99b.html, accessed 6 May 2026). The provision is not new and not obscure to specialists, but it's frequently a surprise to the family receiving the money.

The basic mechanism is straightforward. Where an Australian-resident beneficiary receives a distribution from a non-resident trust, the amount that represents trust income or trust capital — and that has not previously been taxed to the beneficiary under another provision — is included in the beneficiary's assessable income for the year of receipt under s.99B(1). The amount is taxed at the beneficiary's marginal rate as ordinary income, not as a capital gain, so the 50% CGT discount that might apply to a directly-held asset doesn't apply to a trust distribution caught by section 99B (ATO — foreign trust distributions, https://www.ato.gov.au/individuals-and-families/investments-and-assets/in-detail/foreign-trust-distributions, accessed 6 May 2026). The provision exists for good policy reasons: without it, income could be accumulated in a foreign trust (where Australia generally cannot tax the trust's earnings) and then distributed years later to the Australian beneficiary, escaping Australian income tax altogether. Section 99B "catches up" the underlying income at the time of distribution, ensuring the Australian beneficiary pays Australian tax on the underlying trust earnings at some point.

The principal exclusion is the corpus carve-out in section 99B(2). Where the distribution can be identified as representing the original corpus contributed to the trust — the principal capital settled by the original settlor or contributors — that portion is excluded from s.99B(1) under s.99B(2)(a). The reasoning is that corpus has typically already been taxed in the contributor's hands (or was post-tax money to begin with), and a distribution of corpus to a beneficiary is not an income event. Section 99B(2) also excludes amounts that would not have been assessable income if derived directly by the beneficiary as a resident, and amounts attributable to certain pre-residency periods. The catch is the proof burden: the Australian beneficiary must demonstrate which portion of any distribution falls within an exclusion, and that requires trust records. For trusts settled decades ago — common in inheritance scenarios where a UK family trust dates back to the 1970s or 1980s — the records may not be readily available, the trust may have been amended or merged with other family vehicles, and identifying the corpus may be practically impossible. In those cases, the entire distribution is generally assessable. For more recent trusts with clear records, the corpus exclusion is achievable but requires preparation.

The scenarios where retirees encounter section 99B are common. A retiree inherits a beneficial interest in a UK testamentary trust when their parent dies — the trust holds investments and property, generates income, and distributes to the retiree in tranches over five to ten years. Each tranche is examined under section 99B. An Australian retiree receives annual distributions from a Canadian family trust to supplement their retirement — each year's distribution is a separate s.99B assessment. A US trust closes and distributes residual assets to beneficiaries including the Australian sibling — the full distribution is examined. Less commonly, distributions from foreign retirement vehicles with trust elements (some US arrangements that aren't recognised as superannuation under Australian rules) may interact with section 99B, though specific vehicles need detailed analysis. In each scenario, the consequence can be material — a $200,000 distribution to a top-rate Australian retiree may produce $94,000 or more in Australian tax (45% income tax plus 2% Medicare on income above $190,000) if fully assessable, even though the family thinks of the distribution as a tax-free transfer.

Where Australian and foreign tax both apply to the same distribution, the foreign income tax offset under Division 770 of ITAA 1997 is available to credit foreign tax paid against the Australian liability — preventing double taxation, though not eliminating Australian tax altogether (ATO — foreign income tax offset, https://www.ato.gov.au/individuals-and-families/income-deductions-offsets-and-records/offsets-and-rebates/foreign-income-tax-offset, accessed 6 May 2026). The offset is broadly limited to the lesser of foreign tax paid and the Australian tax that would otherwise be payable on the foreign-sourced amount.

The interaction with the Common Reporting Standard (CRS) has materially shifted the compliance landscape. Australia exchanges financial account information with most major OECD jurisdictions under the CRS, and reportable accounts that are held by trusts (or pay distributions to Australian-resident beneficiaries from financial institutions in CRS-participating jurisdictions) are within scope (ATO — Common Reporting Standard, https://www.ato.gov.au/businesses-and-organisations/international-tax-for-business/in-detail/international-information-sharing/automatic-exchange-of-information-aeoi/common-reporting-standard, accessed 6 May 2026). The ATO receives data from foreign tax authorities and matches it against Australian tax returns. For retirees who have historically received foreign trust distributions without disclosing them — whether through misunderstanding the rules, advice gaps, or other reasons — the ATO can identify the discrepancy and follow up. The compliance risk has moved from "the ATO won't know" to "the ATO will know, the question is how it's handled." Voluntary disclosure with proper section 99B analysis is the rational response for retirees in this position; the alternative produces higher penalties and worse outcomes.

The interaction with Centrelink Age Pension is separate but parallel. A foreign trust distribution that is assessable income for tax purposes is generally also reportable to Centrelink as income for the period (Services Australia — income test for pensions, https://www.servicesaustralia.gov.au/income-test-for-pensions, accessed 6 May 2026). Where the distribution is substantial relative to the Age Pension income free area (FY25-26 single $218 per fortnight, couple combined $380 per fortnight), it may temporarily reduce the pension. The asset position is more nuanced: a beneficial interest in a foreign discretionary trust is generally not an assessable Centrelink asset (because the beneficiary has no enforceable right to anything in particular), but a fixed entitlement to a foreign trust may be assessable. For Age Pensioners receiving foreign trust distributions, both the tax and Centrelink obligations need to be addressed, and they don't always produce the same answer.

Planning ahead of a foreign trust distribution can materially improve the outcome. Where the family has control of the trust — for example, an Australian retiree's parent overseas is the trustee or has effective control — the timing and structuring of distributions can sometimes be improved: distributing identifiable corpus first, crystallising income before the Australian beneficiary's residency starts, or restructuring to clean accounting positions. Where the family doesn't have control — a discretionary trust in another jurisdiction with independent trustees — the planning options are more limited but still worthwhile: obtaining the trust deed and accounts before any distribution, identifying the corpus position, and modelling the section 99B exposure so the retiree knows what to expect. For pre-retirees considering migration to Australia from a country where they are foreign trust beneficiaries, the pre-migration review is high value: the timing of distributions before versus after Australian residency makes a material tax difference, and the documentation of trust positions at residency transition simplifies later analysis.

What do worked planning examples show?

These two cases show how the section 99B exposure plays out for typical migrant retiree scenarios. Illustrative only — not personal advice — using FY25-26 figures.

Case 1 — Patricia, 68, UK-origin retiree expecting £180,000 from a deceased aunt's trust. Patricia migrated to Australia in 1992, became Australian-resident in 1993, and is a beneficiary of her aunt's UK testamentary trust which is now winding up after the aunt's death in 2024. The trust holds UK investments and is expected to distribute £180,000 (~AUD$345,000) to Patricia over the next two years. Patricia assumed this was a non-taxable inheritance. On these facts, the rational pathway is to slow down before any distribution arrives — request the UK trustee provide trust accounts, identify the corpus contributed by the aunt's estate, and model the section 99B exposure under s.99B(2)(a). If the aunt's estate contributed AUD$300,000 of corpus and the trust has accumulated AUD$45,000 of income subsequently, the corpus exclusion may cover most of the distribution and only the income portion (~AUD$45,000) is assessable under s.99B(1). At Patricia's 32% marginal rate (FY25-26 income above $45,000 up to $135,000), that's roughly $14,400 in tax — much better than the worst-case $115,000+ if the full distribution were assessable at top rates. The trap to avoid is letting the distribution arrive without analysis — once the cash hits her bank account, the amount is in her assessable income for the year, and any analysis becomes after-the-fact reconciliation rather than prior planning.

Case 2 — David and Marie, both 62, Canadian-origin pre-retirees with an annual distribution from a Canadian family trust. David and Marie became Australian-resident in 2010 and are discretionary beneficiaries of a Canadian family trust that David's father established. The trust distributes CAD$60,000 (~AUD$66,000) to David each year as retirement support. They have not previously declared these distributions on their Australian tax returns. On these facts, the situation is twofold — forward and backward. Forward, each year's distribution is assessable under s.99B(1), and the corpus exclusion analysis needs to be done annually with reference to the Canadian trust's records. Foreign income tax offsets under ITAA 1997 Div 770 may be available for Canadian tax already paid on the trust's income, partly offsetting the Australian liability. Backward, the historical undisclosed distributions create a compliance issue: under CRS, the ATO is likely to have or be acquiring this data, and voluntary disclosure with proper section 99B analysis is the prudent path before audit. The trap to avoid is continuing to receive distributions without disclosure on the assumption that "they're tax-free family support" — under CRS, the ATO learns about cross-border distributions, and the longer the non-disclosure continues, the worse the eventual reckoning. The related article on articles/2026-05-05-voluntary-disclosure-centrelink covers the broader voluntary-disclosure framework that applies in parallel for any Centrelink interaction with the same distributions.

For Australian retirees with foreign family trust connections, section 99B is the rule that converts the family-finance language of "gift" or "inheritance" into the Australian tax language of "assessable income at marginal rate." The provision is not punitive — it's a coherent piece of policy designed to prevent income shifting through foreign trusts. But it's frequently a surprise to migrant retirees and their families. The advice work is to identify the trust connections, obtain the records, model the exposure, and structure distributions where possible to maximise the corpus exclusion. The CRS environment removes non-disclosure as a viable strategy. The remaining variables are timing, documentation, and coordinated advice — and for most retirees in this position, those three levers can materially improve the outcome.

Sources

• classic.austlii.edu.au — S99b
• Australian Taxation Office (ATO) — Foreign trust distributions
• Australian Taxation Office (ATO) — Common reporting standard
• Australian Taxation Office (ATO) — Foreign income tax offset
• Services Australia — Income test for pensions