In short

Defined benefit pensions from government schemes (CSS, PSS, DFRDB) are exempt from the Age Pension assets test but fully income-tested. Assessable income equals the gross pension minus a deductible amount capped at 10% from January 2016 — military schemes (DFRDB, MilitarySuper, DFRB) are excluded from that cap. DB pensioners are nearly always income-test bound, not assets-test bound.

Retirees who draw income from defined benefit pensions — the kind paid by the Commonwealth public sector schemes (CSS, PSS, MilitarySuper, DFRDB), state public sector schemes, and a handful of legacy private sector funds — operate under a different Centrelink framework than retirees with account-based pensions. The distinction is not a minor administrative detail: it changes which test limits their Age Pension, how much of their pension income is assessable, and how significant the structural decisions around reversionary pensions really are. Understanding the framework is the starting point for any useful planning conversation.

What is a defined benefit pension and how does it differ from the Age Pension?

A defined benefit pension is a retirement income stream from a superannuation scheme where the payment is determined by a formula based on salary, years of service, and a multiplier — rather than from an account balance. Most Commonwealth and state government superannuation schemes (CSS, PSS, MilitarySuper, DFRDB, GESB, State Super NSW, QSuper DB) operate on this basis. The DB pension is paid for life, and in most cases continues in part to a surviving spouse. Because there is no account balance to deplete, the payment does not reduce over time unless it is explicitly commuted or the pensioner's circumstances change.

The Age Pension, in contrast, is the means-tested government payment administered by Services Australia. The two interact through the Age Pension means test — both income test and assets test — but they are funded and paid by different mechanisms.

How is the deductible amount calculated and what did the 2016 cap change?

For Centrelink income test purposes, the assessable income from a defined benefit income stream is calculated as the annual payment minus a deductible amount (DSS Social Security Guide 4.9.2.30, https://guides.dss.gov.au/social-security-guide/4/9/2/30, Guide version 1.338, 20 March 2026). The deductible amount is not a flat concession. From 1 July 2007, it is based on the proportion of the superannuation interest that constitutes the tax-free component under the Income Tax Assessment Act 1997. In practical terms, the tax-free component reflects the proportion of the underlying superannuation interest that was funded from post-tax contributions. For most CSS and PSS pensioners, this proportion exists but is typically not the majority of the pension — contributions to those schemes were largely made from pre-tax salary, so the tax-free component and thus the deductible amount is modest as a proportion of the total payment. The deductible amount increases proportionally as the pension itself increases through indexation.

From 1 January 2016, the deductible amount was capped at 10 per cent of the gross income from the defined benefit income stream (DSS Social Security Guide 4.9.2.30). Prior to this change, some pensioners with a larger tax-free component in their superannuation interest were able to exclude a more significant portion of their pension from the income test. The 2016 change capped that exclusion at 10 per cent. Importantly, the cap does not apply to three military schemes: the Defence Force Retirement and Death Benefits Scheme (DFRDB), the Military Superannuation and Benefits Scheme (MilitarySuper), and the Defence Force Retirement Benefits Scheme (DFRB) are all specifically excluded from the 10 per cent cap by the DSS Social Security Guide. DB pensioners from those schemes retain whatever deductible amount the tax-free component calculation produces.

In practice the deductible amount sits somewhere between 0 and 10 per cent for most post-2016 CSS and PSS recipients (because the cap applies). Pre-2016 retirees may have had a higher amount, but the cap took effect from 1 January 2016 and reduced their assessed position from that date onwards. Military scheme recipients (DFRDB, MilitarySuper, DFRB) can have deductible amounts above 10 per cent — sometimes materially — depending on their individual contribution history.

How are defined benefit income streams treated in the Age Pension assets test?

The assets test treatment of defined benefit income streams is the other side of the framework. DB income streams from government schemes are classified as asset-test exempt income streams for social security purposes — the DB pension itself is not included as an asset in the assets test (DSS Social Security Guide sections 4.9.2 and 4.9.2.20). There is no "balance" against which an assets test value can be applied — the pension is a pure income stream with no residual capital value.

This is structurally different from an account-based pension, where the entire balance is counted in the assets test. A retiree with $800,000 in an account-based pension faces that full $800,000 in the assets test. A retiree with a DB pension paying $60,000 per year faces nothing in the assets test from that pension — only their other assessable assets (cash, investment portfolio, investment property) are counted. This asymmetry means DB pensioners are usually income-test bound rather than assets-test bound, and planning strategies aimed at assets-test optimisation (gifting, lifetime annuities, principal-home renovation) do not translate directly to their situation.

How does the income test taper affect a defined benefit pensioner?

The income test taper means the DB pension's assessed income directly reduces the Age Pension. For a single pensioner, the income free area is $218 per fortnight — income above that reduces the pension by 50 cents for every dollar. A DB pensioner receiving $50,000 per year in gross payments, with a 10 per cent deductible amount ($5,000), has $45,000 per year in assessable income from the DB pension alone — or approximately $1,731 per fortnight. The income free area produces a tiny concession before the taper applies.

A DB pension of this size will substantially reduce or eliminate the Age Pension for many recipients, depending on their other income. A larger DB pension — $80,000 or more gross — is very likely to extinguish Age Pension entitlement entirely through the income test cut-off, regardless of the assets position.

How is the defined benefit pension indexed?

Most Commonwealth DB pensions are indexed twice yearly to the Consumer Price Index. The increases occur on the first payday in January and July each year, applying to indexed pensions payable from the Commonwealth Superannuation Scheme (CSS), Public Sector Superannuation Scheme (PSS), and Military Superannuation and Benefits Scheme (MSBS) (Commonwealth Superannuation Corporation, https://www.csc.gov.au/Members/Retirement/Pensioners/CPI-rates-and-your-pension; ACPSRO confirms, https://acpsro.org/indexation/).

The mechanics: the January increase relates to the September quarter CPI (all groups percentage change, weighted average of eight capital cities); the July increase relates to the March quarter CPI. This twice-yearly indexation lift compounds over time — for pensioners close to the income test cut-off, the assessable income counted in the income test rises with each adjustment, meaning the Age Pension component can erode steadily even if no decisions are made and no other circumstances change. For those relying on a meaningful Age Pension component alongside the DB pension, this trajectory is worth modelling.

How do reversionary pensions affect the surviving spouse's Age Pension?

For CSS and PSS, the standard reversionary rate to a surviving spouse is 67 per cent of the deceased member's basic pension (Commonwealth Superannuation Corporation product disclosure documents; CSC PSF03 background paper, https://csc.sitecorecontenthub.cloud/api/public/content/39dc4fb3e85b419e9859501e2ffb54a5). Eligible children may receive an additional 11% per child (subject to age limits and full-time-student rules), with the total pension capped at 100% of the deceased's pension.

For DB couples, the post-bereavement income picture requires specific modelling. The surviving spouse will:

  1. Receive the reversionary pension at 67% of the deceased's pension
  2. Be reassessed as a single Age Pension recipient at the lower single-rate income and assets test thresholds
  3. Receive a bereavement payment covering the transition period (typically a one-off payment plus continuation of the deceased's full pension entitlement for 14 weeks)

The post-bereavement income is almost never intuitive from the pre-bereavement picture alone. A couple receiving a $80,000 CSS pension plus a $15,000 part Age Pension might think the survivor receives $80,000 × 67% + a single Age Pension. But: the surviving spouse's income test is now applied at the SINGLE income free area ($218/fortnight), the income test cut-off is much lower, and the 67% reversionary at $53,600/year may extinguish the Age Pension entirely for the survivor. The interaction of the reversionary pension income with the single-rate income test is the often-missed piece.

What does the Age Pension calculation look like for a typical CSS retiree?

Consider Michael, 71, single, CSS retiree on a $52,000/year indexed pension. His deductible amount is capped at 10% = $5,200/year. Assessable DB income for the Age Pension income test: $46,800/year = $1,800/fortnight.

Single income free area = $218/fortnight. Excess over free area = $1,800 - $218 = $1,582/fortnight. Pension reduction = 50% × $1,582 = $791/fortnight.

The maximum single Age Pension is $1,200.90/fortnight (FY2025-26 from 20 March 2026). After the income-test reduction, Michael would receive only $1,200.90 - $791 = $409.90/fortnight from the Age Pension — or approximately $10,650/year. This is before any other income or asset considerations.

In practical terms, Michael's $52,000 CSS pension does the heavy lifting of his retirement income; the Age Pension is a modest supplementary contribution. As his CSS pension indexes upward each January and July, his Age Pension component will erode further. By the time the CSS pension reaches around $58,000/year (a few years' indexation away at typical CPI rates), the Age Pension will have ceased entirely.

How does the military scheme exclusion from the 10% cap affect Age Pension?

Consider Janet, 70, single, DFRDB pensioner on a $48,000/year pension. Because DFRDB is exempted from the 10% cap, her actual deductible amount is calculated against her tax-free component — say it works out at 22% of her gross pension = $10,560/year. Her assessable DB income: $48,000 - $10,560 = $37,440/year = $1,440/fortnight.

Excess over free area = $1,440 - $218 = $1,222/fortnight. Pension reduction = $611/fortnight. Age Pension paid = $1,200.90 - $611 = $589.90/fortnight = approximately $15,338/year.

Compared to Michael's CSS situation with the same gross DB pension level (if Michael were also receiving $48,000 CSS), Janet receives about $4,700/year more in Age Pension because of the DFRDB exclusion from the 10% cap. The exclusion is structurally meaningful for military-scheme pensioners and worth flagging for any DFRDB/MSBS/DFRB client modelling their position.

What is the practical implication for defined benefit pensioners?

The practical implication for DB retirees seeking to understand their Age Pension position is straightforward: focus on the income test. Whether other assets lift the assets test above the cut-off is a secondary consideration for most DB pensioners; the income test is almost always the binding constraint, and it operates from the first dollar of pension payment above the free area.

Pre-bereavement modelling of the surviving-spouse position is the highest-leverage planning conversation for DB couples. The income picture for the survivor is materially different from the picture for the couple, and that difference is rarely visible without a structured projection.

Sources

Key takeaways

  • Defined benefit pensions from government superannuation schemes (CSS, PSS, MilitarySuper, DFRDB, and state equivalents) are asset-test exempt for the Age Pension — there is no balance to count. This is structurally different from account-based pensions, where the full balance is assets-tested. DB pensioners are almost always constrained by the income test, not the assets test.
  • Assessable DB pension income under the Age Pension income test equals the gross pension minus a deductible amount. From 1 January 2016, the deductible amount is capped at 10% of the gross pension for most schemes. Military scheme pensioners — DFRDB, MilitarySuper, and DFRB — are excluded from the 10% cap and may have deductible amounts above 10% based on their actual tax-free component, potentially receiving significantly more Age Pension than a CSS/PSS pensioner on the same gross pension.
  • Most Commonwealth DB pensions are CPI-indexed twice yearly — on the first payday in January (based on the September quarter CPI) and in July (based on the March quarter CPI). Because indexed income increases flow directly into the income test, DB pensioners close to the Age Pension income cut-off can find their Age Pension eroding automatically without any change in circumstances.
  • For DB couples, the surviving-spouse position requires specific modelling. CSS/PSS reversionary pensions are typically 67% of the deceased member's basic pension. The survivor is also reassessed at single-rate income test thresholds, which are lower than couple thresholds. The interaction of the reduced reversionary pension with the single-person income test often produces a materially different Age Pension outcome than the couple's pre-bereavement position suggests.

Frequently asked questions

Is a defined benefit pension counted in the Age Pension assets test?

No. Defined benefit income streams from government superannuation schemes are classified as asset-test exempt income streams for social security purposes. There is no residual capital value or account balance to assess — the DB pension is a pure income stream. Only other assets (cash, investments, property) are counted in the assets test. This contrasts directly with account-based pensions, where the full balance is counted.

How is a defined benefit pension assessed under the Age Pension income test?

Assessable income from a DB pension equals the gross annual payment minus a deductible amount. The deductible amount is based on the tax-free component of the underlying superannuation interest. Since 1 January 2016, this deductible amount has been capped at 10% of the gross pension for most schemes — meaning at least 90% of the gross DB pension is income-tested. Military scheme pensioners (DFRDB, MilitarySuper, DFRB) are excluded from the 10% cap and may have higher deductible amounts.

How does a CSS or PSS pension affect how much Age Pension I get?

DB pension income is added to your other income and tested at the income free area ($218/fortnight for singles). Every dollar above the free area reduces your Age Pension by 50 cents. A single CSS/PSS pensioner on $52,000 gross has approximately $46,800 in assessable DB income, which reduces the maximum Age Pension by around $791/fortnight — leaving a residual of about $410/fortnight. As the DB pension indexes up each January and July, this residual erodes further until it cuts off entirely.

What happens to a surviving spouse's Age Pension when a CSS or PSS pensioner dies?

The survivor receives 67% of the deceased member's basic CSS or PSS pension as a reversionary pension. They are simultaneously reassessed as a single Age Pension recipient under the lower single-person income test thresholds. The combination — reduced reversionary pension income plus a lower income free area — means the Age Pension outcome for the survivor is not a simple 67% of the couple's prior position. A separate projection is needed; it often reveals a less favourable income outcome than expected.

A note on advice. This article is general information only and doesn't account for your personal circumstances. Everyone's situation is different — before acting, it's worth talking it through with a licensed adviser who knows your full picture.