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AussieCalc

FIRE Calculator Australia

Calculate your FIRE number, time to financial independence, and projected portfolio growth based on your savings rate and investment return.

When to use

When you want to know how much you need to save to retire early, how long it will take at your current contribution rate, or whether a target retirement age is achievable.

Who it's for

Anyone pursuing Financial Independence, Retire Early. From early-stage accumulators to those approaching their FIRE number.

What you'll need

Annual expenses in retirement, current savings, monthly investment contributions, expected return rate, and safe withdrawal rate.

$

Your total annual spending in retirement. Your FIRE number will be 25× this at a 4% withdrawal rate.

$

Total invested assets today (ETFs, shares, managed funds). Exclude super if you cannot access it yet.

$

How much you invest each month toward your FIRE portfolio.

%

Diversified ASX ETF portfolios have historically returned 7–9% p.a. Use a conservative estimate for planning.

%

The 4% rule is the most widely used benchmark. Use 3–3.5% for a longer, more conservative retirement.

Assumes constant returns compounded monthly. Does not account for tax, investment fees, or inflation. Super preservation rules are not modelled. General guidance only. Not financial advice.

Saved scenarios

No saved scenarios yet. Adjust inputs and click “Save current” to compare later.

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Retirement Income Calculator

Plan how to draw down your portfolio sustainably once you reach FIRE

Portfolio growth to FIRE

33 year projection at 7% p.a. — hover to inspect each year

ContributionsInvestment growth
Stacked area chart projecting portfolio growth toward the FIRE number of $1,500,000
PeriodContributionsInvestment growthTotal
Age 31$74K$5K$79K
Age 32$98K$11K$109K
Age 33$122K$20K$142K
Age 34$146K$31K$177K
Age 35$170K$45K$215K
Age 36$194K$61K$255K
Age 37$218K$81K$299K
Age 38$242K$103K$345K
Age 39$266K$129K$395K
Age 40$290K$159K$449K
Age 41$314K$192K$506K
Age 42$338K$230K$568K
Age 43$362K$272K$634K
Age 44$386K$318K$704K
Age 45$410K$370K$780K
Age 46$434K$427K$861K
Age 47$458K$491K$949K
Age 48$482K$560K$1.0M
Age 49$506K$636K$1.1M
Age 50$530K$720K$1.2M
Age 51$554K$811K$1.4M
Age 52$578K$911K$1.5M
Age 53$602K$1.0M$1.6M
Age 54$626K$1.1M$1.8M
Age 55$650K$1.3M$1.9M
Age 56$674K$1.4M$2.1M
Age 57$698K$1.6M$2.3M
Age 58$722K$1.7M$2.4M
Age 59$746K$1.9M$2.6M
Age 60$770K$2.1M$2.9M
Age 61$794K$2.3M$3.1M
Age 62$818K$2.5M$3.3M
Age 63$842K$2.8M$3.6M

Stacked areas show total contributions (blue) and compound growth above contributions (green). The amber dashed line is your FIRE number.

Understanding FIRE

What is FIRE?

FIRE stands for Financial Independence, Retire Early. The core idea is to accumulate enough invested assets that the returns they generate cover your living expenses indefinitely, making paid employment optional. Most people who pursue FIRE are not trying to stop working forever, they want work to become a choice rather than a necessity.

How your FIRE number is calculated

Your FIRE number is your annual expenses divided by your safe withdrawal rate. At the most common benchmark of 4%, you divide annual expenses by 0.04, which equals 25 times your annual spending. If you spend $60,000 per year, your FIRE number is $1,500,000. This is the portfolio size at which you could theoretically withdraw your expenses each year without depleting the principal.

The 4% rule explained

The 4% rule comes from research showing that a portfolio invested in a mix of shares and bonds has historically sustained withdrawals of 4% of the initial balance (adjusted for inflation) over 30-year periods. It is a guideline, not a guarantee. For retirements lasting 40–50 years, many FIRE practitioners use 3–3.5% for added safety margin.

Types of FIRE

Lean FIRE targets a minimal lifestyle (often under $40,000 per year), requiring a smaller portfolio but less buffer for unexpected costs. Standard FIRE is the baseline 25× expenses model. Fat FIRE targets a larger portfolio to support a comfortable or high lifestyle without financial constraints. Barista FIRE and Coast FIRE are partial approaches where some income supplements or early accumulation does the heavy lifting.

FIRE in the Australian context

Australian FIRE planning has unique features. Superannuation cannot be accessed until preservation age (60 for most people), so early retirees need an outside-super portfolio to bridge the pre-60 gap. The Age Pension from age 67 can reduce the portfolio required later in life. Medicare removes the largest healthcare uncertainty faced by US FIRE practitioners.

Savings rate and timeline

Your savings rate (what percentage of income you invest), is the single biggest lever in FIRE planning. A higher savings rate simultaneously grows your portfolio faster and reduces your required FIRE number (because you are demonstrating you can live on less). At a 50% savings rate, financial independence typically takes 15–17 years. At 20%, the timeline extends to 35+ years.

Types of FIRE

FIRE is not a single target. It scales with your income, lifestyle, and risk tolerance. Each variant implies a different FIRE number and a different path to get there.

Lean FIRE

Under $1M

Under $40,000/yr in retirement

Minimal lifestyle, frugal spending, smaller portfolio required. Less buffer for lifestyle changes or health costs.

Standard FIRE

$1.25M–$2M

$50,000–$80,000/yr in retirement

The classic 25× model. Comfortable but not extravagant. Most commonly targeted by Australian FIRE seekers.

Fat FIRE

$2.5M+

$100,000+/yr in retirement

High lifestyle retirement with significant financial cushion. Demands a larger portfolio but tolerates spending flexibility.

Barista FIRE

Reduced portfolio

Partial coverage in retirement

Part-time or casual work covers remaining expenses. Smaller required portfolio; keeps social structure while reducing financial pressure.

Calculator assumptions

  • Constant annual return: The same return is applied every year. Real portfolios fluctuate, sometimes sharply. The calculator shows a smooth average-case projection, not a year-by-year simulation of market volatility.
  • Nominal values — inflation not deducted: All projected figures are in nominal (future) dollars. At 3% annual inflation, $1.5M in 20 years is worth roughly $830,000 in today's purchasing power. Use the Inflation Calculator to convert projections into today's dollars.
  • Superannuation not modelled: This calculator treats all savings as accessible. If you are targeting early retirement before 60, exclude locked super from your starting balance. Model super separately using the Superannuation Calculator, then combine the two phases.
  • Tax and fees not deducted: Investment returns are modelled gross. To account for ETF management fees (typically 0.04–0.20% p.a. for Australian index funds), reduce your expected annual return by the fee amount. Tax on distributions is not modelled.
  • Safe withdrawal rate is not guaranteed: The 4% rule is a historical guideline based on US market data over 30-year periods. It does not guarantee outcomes, particularly for very long retirements (40+ years) or in lower-return environments. Consider using 3–3.5% for a more conservative model.

FIRE risks and how to manage them

Sequence of returns risk
Retiring into a sharp market downturn can permanently impair a portfolio if you are withdrawing from it while prices are falling. The first few years of retirement carry disproportionate weight. A cash buffer of 1–2 years of expenses can reduce the need to sell assets during downturns.
Longevity risk
A 40-year-old who retires early may need their portfolio to last 50 years or more. The 4% rule was designed for 30-year retirements. For very early retirements, use 3–3.5% to reduce the risk of the portfolio being depleted before the end of your life.
Inflation eroding purchasing power
A FIRE portfolio that generates $60,000 in year one may struggle to maintain that real spending power if inflation runs high over decades. Many FIRE practitioners increase their annual withdrawal each year by inflation, which is how the original 4% rule research was designed.
Lifestyle changes
Expenses in early retirement may be higher than expected, especially if starting a family, facing unexpected health costs, or discovering that your retirement lifestyle costs more than your working lifestyle. Leave a margin of safety in your FIRE number.

Frequently asked questions

What is the FIRE number?
Your FIRE number is the portfolio size at which your invested assets generate enough return to cover your annual expenses indefinitely. It is calculated as annual expenses divided by your safe withdrawal rate. At 4%, your FIRE number is 25 times your annual spending. At 3.5%, it is roughly 28.6 times your spending.
What safe withdrawal rate should I use?
The 4% rule is the most widely cited benchmark, derived from research on US portfolio data over 30-year retirement periods. For early retirements lasting 40–50 years, many FIRE practitioners prefer 3–3.5% for added safety margin. If you plan to have some part-time income or the Age Pension, a higher withdrawal rate may be sustainable.
Should I include superannuation in my FIRE calculation?
It depends on your target retirement age. If you plan to retire before 60, you cannot access super until preservation age, so you need an outside-super portfolio to fund the gap. Model the two phases separately: outside-super savings until you can access super, then both combined. This calculator models outside-super savings, use the Superannuation Calculator to project your super balance.
What annual return should I use?
Diversified ASX ETF portfolios have historically returned 7–9% per year including dividends before fees and inflation. For FIRE planning, 7% is a reasonable conservative assumption after typical index ETF fees. Use 5% if you want a more cautious projection or if your portfolio includes more defensive assets. Returns are never guaranteed.
How is Coast FIRE different from standard FIRE?
Coast FIRE means accumulating enough invested capital that, if left to grow untouched at the expected return, it will reach your FIRE number by a target age. You stop contributing aggressively but continue working to cover current living expenses. This lets you reduce the intensity of saving earlier while still reaching financial independence later.
Does the Age Pension affect the FIRE number?
The Age Pension from age 67 can reduce the portfolio size required to sustain your spending, because pension income covers part of your expenses. However, the pension is means-tested and its availability depends on assets and income. For planning purposes, most Australian FIRE seekers target a self-sufficient portfolio and treat any Age Pension as a bonus rather than a core assumption.
What happens if markets fall just after I reach FIRE?
A significant market fall early in retirement can permanently impair a portfolio that is being drawn down, this is called sequence of returns risk. Common strategies to manage it include maintaining a 1–2 year cash buffer to avoid selling assets at depressed prices, using flexible withdrawal strategies (spending less in down years), and targeting a conservative withdrawal rate such as 3.5% rather than 4%.
How does this calculator differ from the Retirement Income Calculator?
The FIRE Calculator models the accumulation phase, how long it takes to build a portfolio large enough to retire on. The Retirement Income Calculator models the decumulation phase, how long a portfolio lasts once you start drawing from it. Use this calculator to find your FIRE number and timeline, then use the Retirement Income Calculator to stress-test how long your portfolio will last at different drawdown rates.

How this calculator works

Enter your expected annual expenses in retirement and a safe withdrawal rate (default 4%). The calculator divides expenses by the withdrawal rate to produce your FIRE number, the portfolio size at which your investments theoretically cover your spending indefinitely.

It then projects your portfolio forward month by month: each month, your contribution is added and the monthly return (annual rate divided by 12) is applied. The year-by-year growth is charted with an amber reference line at your FIRE number, so you can see exactly when the portfolio crosses the threshold.

If you set a target retirement age in Advanced Settings, the calculator shows your projected portfolio value at that age and whether it is above or below your FIRE number. This lets you stress-test specific dates, (for example: "can I retire at 45?"), and see the surplus or shortfall you would face.

Sources

Last updated: July 2026

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