PSS and CSS Pensions in Retirement: The Complete Guide

1. What are CSS and PSS?

The Commonwealth Superannuation Scheme (CSS) and Public Sector Superannuation Scheme (PSS)are defined benefit superannuation schemes for Australian Government employees. Unlike accumulation funds — where your retirement balance depends on contributions and investment returns — defined benefit pensions pay a guaranteed income for life, calculated by a formula based on your salary and years of service.

• CSS — open to employees who joined the APS before 1 July 1990. Now closed to new members.
• PSS — open to employees who joined 1 July 1990 to 30 June 2005. Now closed to new members.
• MSBS (MilitarySuper) — for Australian Defence Force members, broadly similar structure to PSS.
• DFRDB/DFRB — older Defence Force schemes with different indexation rules (see our indexation article).

All four schemes are administered by the Commonwealth Superannuation Corporation (CSC), formerly ComSuper.

2. How your pension is calculated

Each scheme uses a different formula. The broad principle is the same: your pension is determined by a multiple of your final (or average) salary, weighted by years of service and contribution rate.

For PSS members, your final benefit is a lump sum: Final Average Salary × Accrued Benefit Multiple (ABM). The ABM accrues each year based on your contribution rate — CSC gives the annual accrual for a full-time member contributing at 5% as 0.11 + (2 × contribution rate). That formula is stated for the 5% case and should not be extrapolated: accrual rises with the contribution rate but NOT linearly, and CSC's own case study shows 10% contributions accruing 0.26 a year, not the 0.31 the formula would imply. A separate "ten-year rule" also applies — for the first 260 contribution days the ABM accrues as though you contributed at up to 5%, and only after that does it reflect your actual rate. Check CSC's accrual table for your own rate. So contributing 5% accrues about 0.21 per year and 10% about 0.31. The pension is then that benefit divided by a Pension Conversion Factor: 12 at age 55, 11 at 60, 10 at 65.

CSC's own worked example: a member contributing 5% for 30 years has an ABM of 6.3 (0.21 × 30). With a Final Average Salary of $125,000 that is a benefit of $787,500, which taken entirely as a pension at 65 (PCF of 10) pays $78,750 a year, CPI-indexed. For the standard retirement option, at least 50% of the defined benefit must generally be converted to pension, subject to the applicable cashing restrictions; the rest can be taken as a lump sum.

For CSS members, the pension is split between a productivity component (unfunded, based on years of service) and an ordinary benefit (based on member and employer contributions). CSS pensions are partially funded through accumulated member contributions.

3. CPI indexation

CSS, PSS and MSBS pensions are indexed by the Consumer Price Index (CPI) twice each year — on the first pension payday in January and July. The January increase uses the September quarter CPI movement; the July increase uses the March quarter.

For July 2026, the increase is 2.0% — see our detailed PSS/CSS indexation 2026 article for the full calculation and historical rates.

One planning consideration worth understanding: CPI indexation does not keep pace with wages growth over time. The Age Pension is indexed to the higher of CPI or the Male Total Average Weekly Earnings (MTAWE) benchmark, meaning it tends to outpace CSS/PSS pensions over long retirements. The real purchasing power of a fixed defined benefit pension typically erodes slightly relative to living standards over a 20–30 year retirement.

4. Tax treatment

The tax treatment of CSS and PSS pensions is more complex than standard account-based super, and depends on whether your pension comes from a taxed or untaxed fund.

It is tempting to label PSS a "taxed fund" and CSS an "untaxed fund", but that is wrong for both. A PSS or CSS pension can contain up to three components, and the tax treatment follows the component, not the scheme. In particular, the PSS employer-financed component is an untaxed component, exactly like the CSS employer pension.

• Tax-free component — never taxed, at any age.
• Taxable taxed component (from your own contributions and productivity) — assessable at marginal rates with a 15% offset before age 60, and becomes entirely tax-free from age 60.
• Taxable untaxed component (the employer-financed pension, paid from consolidated revenue) — this is the one people get wrong. It is assessable at marginal rates at every age, for life: the tax-free-after-60 rule never applies to it. A 10% tax offset becomes available only from age 60 (or at any age if you receive an invalidity pension, or a reversionary pension where your late spouse was over 60). Below 60, there is no offset at all on this component.

The offset is also capped. It applies only to untaxed income up to the Defined Benefit Income Cap ($131,250 for 2026-27), so the maximum offset is $13,125 for a wholly untaxed pension; untaxed income above the cap gets no offset. Where a pension contains both, CSC applies a stacking approach — taxed amounts are counted against the cap first, with untaxed amounts sitting on top.

5. Defined Benefit Income Cap (DBIC)

Introduced from 1 July 2017, the Defined Benefit Income Cap limits the concessional tax treatment available on defined benefit pensions. The cap is set at one-sixteenth of the general Transfer Balance Cap.

If your taxed defined benefit pension (PSS, MSBS) exceeds the cap, 50% of the excess is included in your assessable income and taxed at marginal rates. For untaxed pensions (CSS), the 10% offset is only available on income up to the cap; pension income above the cap has no offset.

Most PSS members with moderate pensions won't be affected — a $131,250 threshold means only those with very high defined benefit incomes are impacted. However, it's worth checking, particularly if you also receive other DEFINED BENEFIT income streams that count toward the cap. The cap applies to defined benefit income specifically, not to superannuation pension income generally.

6. Transfer Balance Cap (TBC) interaction

When you start receiving a PSS, CSS, or MSBS pension, it counts against your personal Transfer Balance Cap. The general TBC is $2.1 million from 1 July 2026 \u2014 but that is the GENERAL cap, not necessarily yours: a personal TBC can sit anywhere between $1.6M and $2.1M depending on whether you have previously commenced a retirement-phase income stream. Check your personal cap in ATO online services rather than assuming the general figure. The "special value" of the pension for TBC purposes is calculated as:

A $75,000 per year PSS pension therefore has a special value of $1,200,000 — using up about 57% of a full $2.1 million cap. That leaves roughly $900,000 of cap space for any additional account-based pension. For members with large defined benefit pensions, the TBC can significantly limit how much accumulation super can be moved into pension phase.

Unlike account-based pensions, the special value of a defined benefit pension does not decrease over time as pension payments are made — it is a one-time credit to the transfer balance account when the pension commences.

7. Age Pension interactions

A defined benefit pension counts as income under the Age Pension income test. However, a "deductible amount" — based on the return of your own contributions — reduces the assessable income figure. Services Australia calculates this deductible amount based on your personal contributions to the scheme.

Under the assets test, a defined benefit income stream is generally not assessed as an asset (unlike account-based super), meaning the income test is often the more important test for CSS and PSS pensioners. Many recipients of moderate-to-large defined benefit pensions will find their Age Pension entitlement is fully or partially reduced by the income test.

This interaction is worth modelling carefully — particularly for CSS pensioners whose pension grows (via CPI) while Age Pension thresholds change independently.

8. Reversionary pensions

CSS and PSS pensions can provide a reversionary (dependant) pension to an eligible spouse and/or children. For a spouse alone the standard rate is commonly 67% of the member's pension — but the applicable rate depends on the scheme, the benefit type, elections made at retirement (a member who took a reduced pension in exchange for a higher dependant pension can leave 85%), and whether there are eligible children. Confirm your own rate with CSC rather than assuming 67%.

The reversionary pension is itself CPI-indexed and continues for life. It also counts against your spouse's Transfer Balance Cap — and the mechanics are more punishing than a simple "67% × 16" estimate suggests, which matters if you are modelling the survivor scenario.

Where a CSC pensioner dies while receiving a pension, the surviving spouse generally receives the first several payments at the deceased member's full pension rate before the pension steps down to the reversionary rate. CSC calculates the Transfer Balance Cap credit using that initial, higher payment — so the credit is larger than the ongoing reversionary pension would imply. The credit is generally applied to the spouse's transfer balance account 12 months after the death, with a debit reported when the pension subsequently reduces.

The practical consequence: a surviving spouse can have materially less remaining cap space than they expect, which constrains what they can move into their own retirement-phase income stream. Ask CSC for the actual credit that would apply rather than estimating it.

Planning for the survivor scenario — with reduced combined income and a lower reversionary pension — is an important but often overlooked element of retirement planning for APS couples.

9. Modelling your PSS or CSS pension in RetireConfident

RetireConfident's Retirement Readiness Calculator and Retirement Manager both support defined benefit pensions. Enter your annual pension (after tax) as a CPI-indexed income stream, and the calculator will model:

• CPI growth of your pension over the retirement horizon
• Age Pension means testing — how your defined benefit income reduces entitlement
• Survivor (reversionary) scenarios — what happens to combined income when one partner dies
• Monte Carlo stress-testing — how your plan holds up across different market scenarios
• How much superannuation drawdown you need alongside your pension to fund spending