SMSF ECPI methods: segregated, proportionate, and the disregarded small fund assets trap

For Australian Self-Managed Super Funds (SMSFs) in or transitioning to the retirement phase, the Exempt Current Pension Income (ECPI) rules determine how much of the fund's investment earnings escape the standard 15% accumulation tax through the pension-phase exemption. The mechanics live in a small cluster of provisions in the Income Tax Assessment Act 1997: the segregated method in section 295-385, the proportionate (unsegregated) method in section 295-390, and — the trap that catches high-balance retirees — the disregarded small fund assets rule in section 295-387. The choice between the two methods has real tax and administrative consequences. But for some funds the choice is taken away: where the disregarded small fund assets rule applies, the law forces the proportionate method and mandates an actuarial certificate, regardless of how carefully the trustees have notionally set assets aside. Understanding which method applies, when it can be chosen, and the consequences of getting it wrong is core compliance work for any adviser running retirement-phase SMSFs.

The segregated method offers the cleanest tax outcome where it is available. Specific fund assets are identified as supporting the retirement-phase pension liability — documented in trustee minutes, supported by accounting records, and sometimes held in separate bank accounts or investment portfolios. Income, distributions, and capital gains from those segregated current pension assets are 100% exempt from tax under section 295-385, while the remaining assets (supporting accumulation interests) continue to be taxed at the standard 15% rate. The advantage is most striking for capital gains: an asset sitting in the segregated pension pool that realises a large gain on sale produces a fully CGT-exempt result. There is also a "deemed" form of segregation that requires no formal asset-tagging at all: where a fund is solely in the retirement phase — every member's entire interest is a retirement-phase income stream, with no accumulation balance at any time during the year — all of the fund's assets are segregated current pension assets by default, the whole fund's earnings are exempt, and no actuarial certificate is required. This deemed full-fund segregation is the position most retired SMSF couples are in, and it is the simplest and most tax-effective outcome the system offers.

The proportionate method is the alternative — and for some funds, the only option. Under it, all fund assets are pooled and an actuary calculates the average value of the assets supporting the fund's retirement-phase liabilities across the income year, expressed as a percentage of total fund value. That percentage becomes the ECPI ratio. If the actuarial certificate states that 75% of the fund's value supported the pension liability on average, then 75% of every dollar of assessable income — including the net capital gain on any asset sold that year — is exempt, and the remaining 25% is taxed at 15%. The proportionate method is administratively heavier (it requires an actuarial certificate each year, typically a few hundred dollars) and it dilutes the tax benefit on any single high-gain realisation, because the exemption is spread evenly across all income rather than concentrated on a chosen asset. But it is conceptually simpler day to day: there is no need to track which assets are pension-supporting versus accumulation-supporting, and the year-average smoothing reduces planning risk.

The disregarded small fund assets rule in section 295-387 was introduced as part of the 1 July 2017 superannuation reforms to stop high-balance members strategically segregating individual assets just before sale to capture the 100% CGT exemption. The rule works by treating an SMSF's assets as "disregarded small fund assets" — which then forces the proportionate method and blocks segregation — where all of the following are met: the fund is a complying small fund (an SMSF or small APRA fund) at a time during the year; there is at least one retirement-phase interest in the fund at a time during the year; just before the start of the income year, a person had a total superannuation balance exceeding $1.6 million; that same person was, at that time, the recipient of a retirement-phase superannuation income stream from any super fund (not necessarily this SMSF); and that person also held a superannuation interest in the fund during the year. Where the assets are disregarded, even meticulous internal segregation is ignored — the law treats the fund as unsegregated, the proportionate method applies, and the actuarial certificate becomes mandatory.

The $1.6 million figure is a fixed, un-indexed threshold — and this is the single most misunderstood point about the rule. It is written into section 295-387 as a flat $1.6 million and has never moved, even though the general transfer balance cap it was originally aligned with has since indexed up to $2.0 million for FY25-26. Advisers who assume the disregarded-assets test now bites at $2.0 million, in step with the transfer balance cap, are wrong: it still bites at $1.6 million. A member with a total super balance of $1.8 million is comfortably under today's $2.0 million transfer balance cap but well over the $1.6 million disregarded-assets threshold. The gap between the two figures — $400,000 in FY25-26 — is exactly the zone where careful advisers and careless ones diverge.

The full-retirement-phase exception is the relief that saves most retired SMSFs from this rule, and it is worth stating plainly because the consequences are large. Section 295-387(3) provides that the disregarded-assets rule does not apply for an income year if, at all times during that year, all of the fund's assets would (but for the rule) be segregated current pension assets. In plain terms: a fund that is 100% in the retirement phase for the entire income year is never caught by the disregarded small fund assets rule — no matter how large any member's total super balance is. Such a fund uses deemed full-fund segregation, exempts 100% of its earnings, and needs no actuarial certificate. The disregarded rule only bites on mixed funds — those holding both accumulation and retirement-phase interests at some point during the year — where a member crosses the $1.6 million line. This is the distinction that determines real tax outcomes, and it is where the original framing of many of these arrangements goes astray.

The "income stream from any fund" limb is the secondary trap, relevant once a fund is mixed. The test asks whether the member is receiving a retirement-phase income stream from any superannuation fund — not just the SMSF being assessed. A member with $1.8 million sitting in accumulation inside their SMSF, who is also drawing a $300,000 account-based pension from a separate retail or industry fund, can drag the SMSF into the disregarded-assets net: the retail pension is a retirement-phase income stream, the member's total super balance exceeds $1.6 million, and if the SMSF itself holds any retirement-phase interest during the year, segregation is off the table for the SMSF. Trustees and advisers who look only at the SMSF in isolation miss this entirely. The advice work is to map the member's full super position across every fund, not just the one being administered.

What do worked planning examples show?

These two cases show how the methods and the disregarded-assets rule apply in practice. Illustrative only — not personal advice — using FY25-26 figures.

Case 1 — Brian and Helen, both 67. Their SMSF holds $3.2M in total, and the entire fund is in the retirement phase — both members draw account-based pensions, neither holds any accumulation interest. Brian's total super balance is $1.7M; Helen's is $1.5M. The fund holds shares in a private company carrying a $250,000 latent capital gain they plan to crystallise. Brian's $1.7M total super balance is over the $1.6M disregarded-assets threshold, and on a quick reading that looks like a problem. It is not. Because the fund is 100% in the retirement phase for the whole income year, section 295-387(3) means the disregarded small fund assets rule simply does not apply — regardless of Brian's balance. The fund uses deemed full-fund segregation: 100% of its earnings are exempt, the $250,000 gain is fully CGT-free, and no actuarial certificate is needed. The planning point is to protect that status: if either member later starts an accumulation interest mid-year (for example by making or receiving a contribution that is not immediately moved into pension phase, turning the fund "mixed"), the disregarded rule can switch on and the clean outcome is lost. Time the sale, and any contributions, so the fund stays solely in retirement phase across the year the gain is realised.

Case 2 — Margaret, 70, sole-member SMSF. Total fund balance $2.4M, of which $1.6M supports her account-based pension and $800,000 sits in accumulation. The fund owns a commercial property with a $400,000 latent capital gain that she plans to sell next financial year. The property has been held for more than 12 months. Margaret's fund is mixed (it has both pension and accumulation interests), and her total super balance of $2.4M is well over $1.6M, so the disregarded small fund assets rule applies: she cannot segregate the property into the pension pool, and the proportionate method with an actuarial certificate is mandatory. Assume the actuary certifies an ECPI proportion of roughly 67% (the $1.6M pension share of the $2.4M fund). On sale, the $400,000 gross gain is first reduced by the one-third super CGT discount available on assets held over 12 months, giving a net capital gain of about $266,700; the ECPI exemption then frees roughly 67% of that, leaving about $88,000 assessable at 15% — around $13,200 of tax. Pre-2017, Margaret could have segregated the property to the pension segment and sold it CGT-free; the disregarded rule removes that option. The realistic levers now are to lift the pension proportion before the sale (commute accumulation into pension phase if her transfer balance cap allows), or to time the disposal in a year that maximises the certified ECPI percentage. The rule constrains the planning; it doesn't eliminate it.

For SMSF trustees in or approaching the retirement phase, ECPI method selection is an annual compliance task that drives the tax efficiency of the whole fund. The advice work is to test the disregarded small fund assets rule accurately at the start of each year — against the fixed $1.6 million total-super-balance threshold, not the indexed $2.0 million transfer balance cap — and to check whether the fund is solely in the retirement phase for the entire year, because that single fact (via section 295-387(3)) decides whether the rule applies at all. Where the rule does bite, engage an actuary and use the proportionate method; where it doesn't, deemed full-fund segregation gives a 100% exemption with no certificate. Don't assume a fund is segregated just because the trustees have notionally allocated assets — for mixed high-balance funds, the disregarded rule overrides trustee choice, and the cost of getting it wrong includes reassessed tax across multiple years.

Sources

• classic.austlii.edu.au — S295.387
• classic.austlii.edu.au — S295.385
• classic.austlii.edu.au — S295.390
• Australian Taxation Office (ATO) — Exempt current pension income
• Australian Taxation Office (ATO) — Key superannuation rates and thresholds