FIRE: Financial Independence in Australia

Summary

The FIRE (Financial Independence, Retire Early) calculator determines how much an Australian needs to save so that investment returns cover living expenses indefinitely. The core formula is: FIRE Number = Annual Expenses / Safe Withdrawal Rate. At the standard 4% SWR, this means accumulating 25x your annual expenses.

How it works

The 4% rule in an Australian context

The 4% safe withdrawal rate originates from US research (Bengen, 1994; Trinity Study, 1998) using US market data. Australian equities have delivered comparable long-term returns, with the ASX 200 averaging roughly 9-10% nominal including dividends over the past 30 years. However, Australia’s smaller market and higher concentration in financials and resources means more volatility than a globally diversified portfolio.

Superannuation and the two-phase problem

Australian FIRE planning has a unique wrinkle: superannuation is locked until preservation age (currently 60 for those born after 1 July 1964). This creates two distinct phases:

1. Bridge phase — from early retirement until age 60, you must fund expenses entirely from investments outside super (taxable accounts, savings, investment properties).
2. Super phase — from age 60 onward, you can access super tax-free (in most cases) and potentially qualify for the Age Pension.

This means an Australian FIRE seeker often needs to accumulate enough outside super to cover the bridge phase, while also building a super balance for the long term.

Age Pension

The Age Pension (age 67, means-tested) provides up to ~A$28,514/year for singles and ~A$43,006/year for couples (March 2025 rates). FIRE Australians with substantial assets may receive a reduced or zero pension, but it acts as a safety net that effectively lowers the required FIRE number for post-67 planning.

Negative gearing

Some Australian FIRE seekers use negatively geared investment properties — where rental income is less than loan interest and expenses — to reduce taxable income during the accumulation phase. The tax deduction subsidises the holding cost while capital growth builds wealth.

Worked example

Income: A$120,000/year, expenses: A$50,000/year, current investments: A$100,000 (outside super), 7% return, 4% SWR:

1. FIRE Number: A$50,000 / 0.04 = A$1,250,000
2. Annual savings: A$120,000 - A$50,000 = A$70,000/year
3. Savings rate: 70,000 / 120,000 = 58.3%
4. Years to FIRE (simulation): Starting A$100,000, adding A$70,000/year at 7%. Year 12 balance: ~A$1,268,000 — approximately 12 years
5. Coast FIRE (targeting age 60, currently 30): A$1,250,000 / (1.07)^30 = A$164,200 — if you had this much at age 30, you could stop saving and compound growth alone would reach A$1,250,000 by age 60

Note: This example covers the bridge phase only. The individual’s super balance (growing at 12% employer contributions + returns) would provide additional retirement income from age 60.

Key differences from other markets

• Super preservation age (60) forces a bridge-phase calculation that does not exist in the UK (where SIPPs are accessible at 55/57) or the US (where 401k penalty-free access starts at 59.5).
• The Age Pension provides a means-tested safety net from age 67, effectively reducing the long-term FIRE number for older retirees — the UK State Pension and US Social Security serve a similar role but with different eligibility rules and amounts.