Australian Guide · 2025-26
Superannuation Depletion Factors —
Three Things Australians Mean by It
“Depletion factor” is used in three different ways in Australian super conversations — sometimes the APRA minimum drawdown rate, sometimes an adviser's balance-to-income multiplier, sometimes the Safe Withdrawal Rate from academic research. This guide walks through all three with the AU-specific numbers.
Published 2026-06-18 · Updated 2026-06-18 · Reading time ~10 min
Short answer
“Superannuation depletion factor” gets used to mean three different things, depending on who's saying it:
- APRA / ATO minimum drawdown rate — the regulated minimum percentage of an account-based pension you must draw each year (4% under 65, scaling to 14% at 95+).
- Actuarial balance-to-income multiplier — a divisor (~14× at age 67) that converts a super balance into an estimated sustainable annual income for a defined retirement period.
- Safe Withdrawal Rate (SWR) — the percentage from academic research (US: ~4%, AU-adjusted: ~3.0–3.5%) that history suggests is sustainable for a 30-year retirement.
1. APRA / ATO minimum drawdown rates (the regulatory floor)
Once your super is in pension phase (i.e. you've started an account-based pension), the Superannuation Industry (Supervision) Regulations require a minimum annual drawdown — set as a percentage of your 1 July balance, scaling with age. Below this minimum, the pension is non-compliant and earnings lose the 0% tax-on-earnings concession that defines pension phase.
| Age at 1 July | Minimum % | Note |
|---|---|---|
| Under 65 | 4% | Transition-to-Retirement (TTR) income streams and early retirees in account-based pension. |
| 65–74 | 5% | Standard retirement-age band. Combined with Age Pension for many. |
| 75–79 | 6% | Pension-phase drawdown ramps up as life expectancy shortens. |
| 80–84 | 7% | — |
| 85–89 | 9% | — |
| 90–94 | 11% | — |
| 95+ | 14% | Forced spend-down — the policy intent is that super is consumed within a normal lifetime, not bequeathed. |
Source: SIS Regulations Schedule 7; APRA Account-based pension minimum drawdown; ATO Super in retirement.
Key point: the minimum drawdown is a regulatory floor, not a planning target. At 67 you MUST draw 5%, but Safe Withdrawal Rate research suggests 3.5% is the sustainable rate over a 30-year retirement (without Age Pension). The 1.5% gap matters — see §3 below.
2. The actuarial balance-to-income multiplier
Australian financial advisers commonly use a depletion-factor multiplier to convert a super balance into an estimated sustainable annual income for a defined retirement period. The rough form: balance / depletion factor ≈ annual income with no residual.
Approximate depletion factors (6% nominal / 2.5% real return, balance fully spent over the retirement period, no Age Pension):
- • Age 60 / 35-year horizon → depletion factor ~15× · $500K balance ≈ $33K/year
- • Age 65 / 30-year horizon → depletion factor ~14× · $500K balance ≈ $36K/year
- • Age 67 / 28-year horizon → depletion factor ~13.5× · $500K balance ≈ $37K/year
- • Age 70 / 25-year horizon → depletion factor ~13× · $500K balance ≈ $38K/year
- • Age 75 / 22-year horizon → depletion factor ~12.5× · $500K balance ≈ $40K/year
ASIC MoneySmart's retirement projection calculator uses similar methodology with conservative-default assumptions. The multiplier ignores the Age Pension. For retirees in the pension-eligible range, the Age Pension acts as additional income on top of the depletion-driven withdrawal — so the real sustainable lifestyle is the multiplier-derived super income PLUS any Age Pension entitlement.
Source: ASIC MoneySmart retirement income projections methodology; Australian Government Actuary (AGA) longevity research.
3. Safe Withdrawal Rate research (SWR)
Originating in US academic research (Bengen 1994, Trinity Study 1998), the Safe Withdrawal Rate is the percentage of an initial balance you can withdraw each year — adjusted for inflation — with high historical probability of not running out of money over a 30-year retirement. AU-adjusted research (Pfau, Morningstar) typically recommends LOWER rates than the US-based 4% rule because of historically higher equity volatility and lower bond returns locally.
Original US research using a balanced 60% equity / 40% bond portfolio. Built for 30-year retirement, ignores Age Pension, assumes inflation-indexed withdrawals.
Replicates Bengen with broader portfolios. Equity-heavy mixes had higher historical success — at the cost of larger interim volatility.
Australian capital-markets adjustment: lower SWR than US because of AU equity-volatility and lower historical bond returns. Many AU adviser-modelled retirements use 3.5% as the planning floor.
If the goal is to preserve real capital and leave the balance to heirs, the SWR drops to roughly the long-term real return of a diversified portfolio (~3%).
Realistic only for shorter retirements (start at 70+, shorter remaining life expectancy) or when supplemented by full Age Pension.
Sources: Bengen (1994) Journal of Financial Planning; Cooley/Hubbard/Walz Trinity Study (1998); Pfau (2010 / 2017) Retirement Income Research; Morningstar AU SWR analysis.
Reconciling the three: which one matters when?
- The APRA minimum matters because you must follow it once you're in pension phase — non-compliance loses the 0% earnings tax. Set the minimum, then plan separately to what extent you actually spend the drawdown vs reinvest it.
- The actuarial multiplier matters for the planning question “given my balance, what's the income I can sustainably draw?” — it's how advisers translate balance into headline lifestyle. Use it for ASFA Comfortable vs Modest target reconciliation.
- The Safe Withdrawal Rate matters for the longevity-risk question “will my money outlast me?” — it's the most conservative of the three frameworks and is the right anchor when you want a high-confidence answer rather than a planning estimate.
Working example. A 67-year-old with $500,000 super: APRA forces 5% drawdown ($25,000/year); the actuarial multiplier suggests sustainable income ≈ $37,000/year; the AU-adjusted SWR (3.5%) suggests $17,500/year with high longevity confidence. Add the Age Pension (~$30,000 single homeowner full rate) and the realistic income range is $47,500 – $67,000 depending on which framework you anchor on.
Run the numbers
Free Australian super calculators that apply each framework to your specific balance, age, and return assumptions.
- Drawdown calculator — project how long your super lasts at custom drawdown rates and returns.
- SMSF pension phase calculator — minimum drawdown + tax-free earnings for SMSF retirees, including the Transfer Balance Cap.
- Super Snapshot — Super Score relative to ASFA Comfortable benchmarks before retirement.
- How much super should I have by age? — ATO median vs ASFA Comfortable on-track target across the lifecycle.
- Average super by age — percentile distribution with a live percentile calculator.
- FIRE Australia guide — pre-preservation-age withdrawal frameworks including the 3.5% AU-adjusted SWR.
Frequently asked questions
What is a superannuation depletion factor?+
The term is used in three different ways. (1) The APRA / ATO MINIMUM DRAWDOWN PERCENTAGE for account-based pensions — what you must withdraw each year (4% under 65, scaling to 14% at 95+). (2) An ACTUARIAL BALANCE-TO-INCOME MULTIPLIER used by advisers — divide your balance by a depletion factor (e.g. 14x at age 67) to estimate annual sustainable income for a defined retirement period. (3) The SAFE WITHDRAWAL RATE (SWR) from US and Australian academic research — the percentage you can withdraw annually with high historical success of not running out of money over a 30-year retirement.
What are APRA's minimum drawdown rates for superannuation in 2025-26?+
APRA / ATO minimum drawdown rates for account-based pensions (SISA schedule 7): under 65: 4%; 65–74: 5%; 75–79: 6%; 80–84: 7%; 85–89: 9%; 90–94: 11%; 95+: 14%. These are statutory MINIMUMS — you must draw at least this percentage from your account-based pension each financial year. Below the minimum, the pension is non-compliant and earnings lose the 0% tax treatment. There is no statutory maximum — you can draw more if you need it.
Is the 4% rule safe for Australian retirees?+
Bengen's original 4% rule was modelled on US capital markets and a 60/40 portfolio. Australian-adjusted research (Morningstar, Pfau) typically recommends 3.0%–3.5% as a more conservative Safe Withdrawal Rate for Australia, reflecting historically lower bond returns and higher equity volatility locally. The 4% rule also ignores the Australian Age Pension, which many retirees qualify for at least partially — and which acts as a longevity-risk backstop, allowing a slightly higher initial SWR for households with full Age Pension entitlement.
How long will my super last?+
It depends on starting balance, drawdown rate, real return, and life expectancy. Three rough reference points at a 6% nominal / 2.5% real return: $500,000 with $40,000/year withdrawals (8% draw) lasts ~15 years; $500,000 with $30,000/year (6% draw) lasts ~22 years; $500,000 with $20,000/year (4% draw) lasts ~30 years. Add the Age Pension (~$30,000/year for a single homeowner at full rate in 2025-26) and the same balances last considerably longer. Use /au/tools/drawdown-calculator with your specific numbers.
What's the difference between minimum drawdown and Safe Withdrawal Rate?+
The APRA minimum drawdown is a REGULATORY FLOOR — what the law says you must draw to keep the pension's tax-free earnings status. The Safe Withdrawal Rate is a PLANNING TARGET from academic research — what you can sustainably draw with high historical probability of not running out. They serve different purposes and often produce different numbers. A 67-year-old retiree must draw at least 5% (APRA minimum) but the AU-adjusted SWR research suggests 3.5% is sustainable for 30 years with 90%+ success. The difference matters: the 1.5% gap (5% – 3.5%) means an account-based pension at the minimum rate is depleting faster than the research-suggested safe rate, so the balance may run down before life expectancy.
How do actuarial depletion factors work?+
Advisers use depletion factor multipliers to convert a balance into an estimated sustainable annual income for a defined retirement period. Roughly: at age 67 with a 30-year retirement horizon and 6% real return, the depletion factor is approximately 14× (i.e. balance / 14 ≈ sustainable annual income with no residual). $500,000 / 14 ≈ $35,700/year. At age 75 with a 22-year horizon, the depletion factor drops to ~12.5×. ASIC MoneySmart's retirement projection calculator uses similar methodology with conservative-default assumptions. These multipliers ignore the Age Pension; the Pension acts as additional income on top of the depletion-driven withdrawal.
Does the Age Pension change my depletion factor?+
Yes — materially. The Age Pension provides up to ~$30,000/year for a single homeowner at the full rate (2025-26) and up to ~$45,000/year for a couple. It's income- and assets-tested, so as your super balance falls into pension-eligible territory, more Pension kicks in. This creates a 'Pension floor' — even if your super runs out, the Age Pension continues. As a planning approximation: for retirees with $500K super or less at 67, Age Pension top-up means a 4.5%–5% super drawdown is often sustainable to age 90, where the same drawdown without Pension would deplete around 25 years.
Can I leave money to my heirs by drawing less than the minimum?+
No — drawing less than the APRA minimum non-compliances the pension and removes the 0% tax on earnings. The penalty (treating earnings as accumulation-phase rather than pension-phase) is typically larger than the benefit of preserving the extra capital. If your goal is to leave residual super to a spouse or child, you achieve it by: (1) drawing the minimum and reinvesting outside super in a tax-effective vehicle; (2) ensuring a valid Binding Death Benefit Nomination is in place; (3) checking that adult-children beneficiaries qualify as 'tax dependants' — non-dependants pay 17% tax on the taxable component of inherited super, vs 0% for dependants.
