https://glasshouse-wealth.webflow.io/blog/the-hidden-taxes-of-building-wealth-before-60-and-how-to-plan-around-them
Leveraging
7
min read

The Hidden Taxes of Building Wealth Before 60 (And How to Plan Around Them)

Building wealth in your 30s and 40s requires a different mindset to building wealth in your 60s. Before superannuation becomes accessible, most assets sit in your personal name or in discretionary structures, and that means the tax environment looks very different from the concessional world inside super.

If you are aiming for financial flexibility earlier in life, understanding these tax mechanics is critical.

Income Tax on Investment Earnings

When you invest in your personal name, income such as dividends, interest and trust distributions is generally taxed at your marginal tax rate. For high-income earners, that can mean a significant portion of earnings is lost to tax each year.

While franking credits and capital gains concessions can reduce the impact, personal investing is rarely as tax-efficient as superannuation. That doesn’t mean it’s wrong. It simply means the structure must be intentional.

A common mistake is building large portfolios outside super without considering how the ongoing tax drag slows compounding. Over 15–20 years, even a small difference in effective tax rate can materially change outcomes.

Capital Gains Tax and Timing

Capital gains tax (CGT) is another factor that becomes more relevant when building assets outside super. Selling investments in high-income years can create substantial tax liabilities, particularly if gains have accumulated over time.

However, there is also opportunity here. If you reduce work hours, take a sabbatical, or transition to lower income in your 50s, you may enter a lower marginal tax bracket. That can create windows where it is more efficient to realise gains, rebalance portfolios or restructure holdings.

Planning around income fluctuations is often more powerful than trying to avoid tax entirely.

Structuring Decisions Matter

Asset location is just as important as asset allocation. Holding investments in your personal name, a trust, a company or superannuation all create different tax outcomes.

Trusts can provide income distribution flexibility. Companies can cap tax rates but create complexity when extracting funds. Super offers concessional tax but restricted access.

There is no universal best structure. The right approach depends on income levels, family dynamics, risk tolerance and long-term objectives.

What matters is that the structure is chosen deliberately rather than by default.

Debt Strategy and Deductibility

Borrowing to invest can create tax-deductible interest when the borrowed funds are used for income-producing purposes. This can reduce the effective cost of capital and improve cash flow efficiency.

However, deductibility depends on proper loan structuring and clear tracing of funds. Mixing personal and investment borrowings within a single loan can create complications and undermine intended tax outcomes.

Tax efficiency is not about being aggressive. It is about being organised.

Planning Around the 60 Threshold

Once super becomes accessible and retirement phase strategies become available, the tax environment changes dramatically. Earnings can become tax-free within pension caps, and personal taxable income may fall.

That shift is why many wealth strategies are built in two phases: accumulation before 60, and tax optimisation after 60.

Understanding that transition early allows you to build the right balance between personal investments and super contributions, rather than overcommitting to one environment at the expense of flexibility.

Wealth building is not just about returns. It is about what you keep after tax. And before 60, that requires more attention than most people realise.

Disclaimer: This information is general in nature and does not consider your personal objectives, financial situation or needs. You should consider seeking professional advice before making any financial decisions. Past performance is not a reliable indicator of future performance.

Written by
Chris Carlin
Published on
Mar 20, 2026

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