The Bridge Portfolio Strategy: Retiring Before You Can Access Your Super

🧱 The problem every early retiree in Australia faces🔗

Australia's retirement system is built around superannuation, tax-advantaged, compulsory, and for most working Australians it becomes their largest asset. The catch is that it's locked away. For someone born after 30 June 1964, preservation age is 60. You can't simply withdraw your super because you've decided to stop working at 45, you need to reach preservation age and meet a valid condition of release, typically retiring or leaving a job. At 65, access becomes unrestricted regardless of employment status.

This creates a structural gap that doesn't exist in the same way for FIRE practitioners in the United States, where 401(k) and IRA early withdrawal penalties have well-known workarounds, Roth conversion ladders and Rule 72(t) distributions among them. In Australia the lock-in is harder, the money is genuinely inaccessible for ordinary early retirees until preservation age, outside narrow exceptions like severe financial hardship, terminal illness or permanent incapacity.

🌉 What is a bridge portfolio?🔗

A bridge portfolio is a pool of investments held outside superannuation, specifically sized and structured to fund living expenses from the date of early retirement until reaching preservation age and being able to draw on super. It's distinct from a general investment portfolio in two ways: a defined endpoint (preservation age), and a defined drawdown purpose, covering living expenses, not growing indefinitely.

Common structures used to build one:

• A personal brokerage account holding Australian and international shares or ETFs, for example Vanguard's VAS, VGS, or a diversified multi-asset fund.
• A high-interest savings account or term deposits for the cash buffer component.
• An offset account against a mortgage, effectively earning a tax-free return equal to the mortgage interest rate.
• A combination of all three, with the allocation shifting over time as preservation age approaches.

It isn't a set-and-forget accumulation vehicle. It's a purpose-built drawdown machine with a known expiry date.

🧮 How to estimate the size you need🔗

Step 1, the naive number. Annual expenses multiplied by years until preservation age. Example: $60,000 annual expenses, retiring at 45, preservation age 60, a 15-year bridge period, gives a naive bridge size of $60,000 × 15 = $900,000.

Step 2, recognise why the real number is lower. The portfolio doesn't sit in cash, it keeps growing while it's drawn from. A balanced portfolio returning 6% p.a. net of fees with $60,000 drawn annually lasts considerably longer than 15 years if it starts at $900,000, in fact a $900,000 portfolio at 6% net with $60,000 annual withdrawals lasts well over 20 years, so you may need less than the naive figure suggests.

Step 3, account for sequence of returns risk. This is the danger that poor market returns in the early years of drawdown permanently impair the portfolio before it has a chance to recover. For a standard retiree with a 30-year horizon, a bad first decade is painful but often survivable. For a bridge portfolio with a hard 15-year endpoint, a severe market crash in years one to three could mean the portfolio runs out before reaching 60, with no ability to extend the timeline by accessing super early. The bridge portfolio has no safety valve, which makes sequence of returns risk especially acute here.

Step 4, build in a buffer. A reasonable approach is sizing the bridge at 110-120% of the naive calculation, or holding 1-2 years of living expenses in cash or short-duration bonds as a separate buffer drawn on during market downturns, leaving growth assets untouched while markets recover.

🎯 The essential: The standard 4% rule is designed for a 30-year perpetual drawdown. A finite 15-year drawdown is a different problem, mathematically a higher safe withdrawal rate is supportable over a shorter period. Modelling a 6-7% withdrawal rate from a balanced portfolio over 15 years is reasonable to explore, but sequence of returns risk still applies, and the hard endpoint makes it less forgiving than the perpetual case. Model this carefully, ideally with a financial planner using a tool like Monte Carlo simulation.

⚖️ Super vs bridge: the contribution trade-off🔗

Every dollar directed toward super is tax-effective but inaccessible until preservation age. Every dollar put into a personal brokerage account or offset is accessible, but taxed less favourably. That's the core tension for early FIRE planners.

Concessional (before-tax) contributions to super are taxed at 15% inside the fund. If your marginal tax rate is 32.5% or higher (income above $45,001 in 2025-26), that's a meaningful saving, and at the top marginal rate of 47% (including the Medicare levy) the difference is enormous. Investing outside super means returns are taxed at your marginal rate (for income) or subject to capital gains tax (for growth), the 50% CGT discount for assets held more than 12 months softens this but doesn't eliminate the gap. The Super Guarantee (SG) rate is 12% from 1 July 2025, meaning employer contributions are already building your super balance whether you top it up or not.

The practical answer depends on whether your bridge is already funded. If you're 38 with a $200,000 bridge portfolio and need $800,000 by 45, redirecting money to super right now is probably the wrong call, you need to build the bridge first. If you're 42 with a $900,000 bridge portfolio and 3 years left to work, maximising concessional contributions (up to the $30,000 annual cap in 2025-26) makes sense, because the bridge is already adequate.

Two other strategies worth knowing: contribution splitting, which lets you split up to 85% of concessional contributions to your spouse's super account, useful if one partner is older and closer to preservation age, and spousal contributions, where non-concessional contributions to a lower-income spouse's super can attract a tax offset of up to $540 a year. Neither replaces the bridge, but they can help optimise the overall structure.

📈 Structuring the bridge: asset allocation over time🔗

The bridge portfolio's asset allocation shouldn't be static, it needs to evolve as you approach preservation age.

• Early phase (10+ years to preservation age): mostly growth assets, Australian shares (for example VAS), international shares (for example VGS or IWLD), and listed property. Volatility is manageable given the time to recover from drawdowns.
• Middle phase (5-10 years out): start gradually shifting toward a more balanced allocation, introducing defensive assets like short-duration bonds, cash, or term deposits. The exact glide path depends on your risk tolerance and cash buffer size.
• Final phase (3-5 years to preservation age): aim to have the final 2-3 years of bridge expenses sitting in cash or near-cash, term deposits or high-interest savings, so if markets crash the year before you turn 60, you're not forced to sell growth assets at a loss. You draw from cash while waiting for equities to recover.

Tax efficiency inside the bridge matters too. The CGT discount means assets held more than 12 months attract a 50% discount on capital gains for individuals, so it's worth holding ETF units at least a year before selling. Franking credits from Australian shares and ETFs like VAS can meaningfully supplement cash flow if taxable income is low in early retirement, since you may receive franking credit refunds. For higher-income earners or complex family situations, a discretionary family trust or company structure can be worth exploring, a trust can allow income splitting among beneficiaries on lower marginal rates, while a company structure caps tax at 25-30% but loses the CGT discount. These are complex decisions that genuinely need advice from a tax professional.

🧑‍💻 A worked example: Alex's 15-year bridge🔗

Alex is 45 and retires today. Preservation age is 60, so the bridge period is 15 years. Starting position: a super balance of $800,000 (locked until 60), a bridge portfolio (personal brokerage) of $600,000, and annual living expenses of $55,000.

The naive check is $55,000 × 15 = $825,000, so Alex's $600,000 bridge looks short by about $225,000. But the portfolio keeps growing. If the $600,000 is invested in a balanced portfolio returning approximately 6% p.a. net of fees, with $55,000 drawn per year, it lasts approximately 14-15 years, tight, it works in an average-returns scenario, but sequence of returns risk could derail it.

Alex's mitigation strategy: hold 2 years of expenses ($110,000) in a high-interest savings account or term deposits, and invest the remaining $490,000 in diversified ETFs, a mix of VAS, VGS, and a bond ETF. In a market downturn, Alex draws from the cash buffer rather than selling equities, and replenishes the cash buffer from the equity portfolio in good years.

Meanwhile the super engine keeps running. Alex's $800,000 in super, growing at 7% p.a. for 15 years, reaches approximately $2.2 million at age 60 ($800,000 × 1.07¹⁵ = approximately $2,207,000), untouched the whole way. At 60, Alex retires from the bridge and switches to drawing from super.

⚠️ Common mistakes to avoid🔗

• Undersizing the bridge by using the naive calculation without accounting for sequence of returns risk or lifestyle inflation over 15 years.
• Over-contributing to super at the expense of the bridge, leaving yourself with a large locked super balance and an inadequate accessible portfolio.
• Holding the bridge entirely in growth assets with no cash buffer, maximising long-run returns but leaving full exposure to a market crash in the early years of drawdown.
• Forgetting CGT on drawdowns. Every time you sell ETF units to fund living expenses you may trigger a CGT event, plan for this in your tax estimates, especially with large unrealised gains.
• Ignoring the Transition to Retirement (TTR) option. Once you reach preservation age you can start a TTR income stream while still working, if you choose to work part-time, letting you draw up to 10% of your TTR balance annually while continuing to receive employer contributions, a useful bridge-to-bridge tool in the final years.
• Not factoring in part-time work or side income. Even $15,000-$20,000 a year from consulting, freelancing, or a small business dramatically reduces drawdown pressure on the bridge portfolio and can extend its life by years.

❓ Frequently asked questions🔗