For most Australian households, tax ranks as the second-largest expense after housing costs. Yet many investors overlook how poorly aligned investments and superannuation can quietly erode returns over 10 to 20 years.
This article will help you determine whether your current mix of investments and super is working with your tax position—or against it.
Consider two investors, each starting with $100,000 on 1 July 2020, earning 7% annual returns compounded to 30 June 2040. Investor A holds assets in their personal name at a 47% marginal tax rate. Investor B uses super at 15% earnings tax. By 2040, Investor A reaches approximately $387,000 after tax, while Investor B grows to about $492,000—a $105,000 difference from tax alignment alone.
The focus here is practical: how investment decisions, ownership structures and super rules interact with Australian income tax law today, referencing current 2025-26 marginal tax rates and super caps. While you should never choose an investment solely for tax purposes, ignoring tax implications can mean paying thousands more than necessary over your working life.
1. First Checkpoint: Are Your Investments and Super Actually Costing You Extra Tax?
Before diving into strategy, take a moment to assess whether your current setup may be costing you money. Answer these questions honestly:
Are you on a marginal tax rate of 37% or 45% but holding most income-producing assets (term deposits, high-yield shares, REITs) in your own name outside super?
Are you paying interest on a home loan that is not a tax deduction while keeping large amounts in low-yield, fully taxable investments?
Are you making little or no concessional contributions despite earning more than $120,000 per year?
Do you frequently buy and sell shares or crypto, triggering regular capital gains events each year?
Do you and your partner both invest in the higher-income earner’s name, even when one partner is on a lower tax bracket?
If you answered yes to several of these, your investments are likely misaligned with your tax strategy and costing unnecessary tax each year. Even small mismatches compound significantly over time.
2. Understanding How Investments Are Taxed in Australia
Most investment returns fall into three tax categories: investment income, capital gains, and franking credits.
Investment income (interest, rent, unfranked dividends) is taxed at your marginal tax rate in the year it’s received. For 2025-26, that means 0% up to $18,200, then 16% to $45,000, 30% to $135,000, 37% to $190,000, and 45% above—plus the 2% Medicare levy.
Capital gains tax applies when you dispose of assets for more than their cost base. Hold an asset for at least 12 months as an Australian resident individual, and you generally receive the CGT discount of 50% on the gain. Capital losses can only offset capital gains, not salary income, but unused losses carry forward.
Worked example: You buy an ETF in August 2022 for $30,000 and sell in September 2025 for $45,000. The $15,000 gain, less a prior $4,000 capital loss, leaves $11,000. After the 50% discount, $5,500 is taxable at your 37% rate—approximately $2,035 in tax.
Franking credits work through Australia’s dividend imputation system. When a company pays 30% corporate tax before distributing company dividends, it attaches imputation credits. You include both the cash dividend and credit in your tax return. If your tax rate is below 30%, some credit may be refunded, improving your after tax income.
3. Superannuation: Your Primary Tax Shelter for Long-Term Investing
Superannuation functions as Australia’s core tax shelter where investment earnings are generally taxed at up to 15%—substantially lower than most adults’ tax rate on ordinary income.
Concessional contributions include employer contributions (currently 11.5% super guarantee) and salary sacrifice amounts. The 2025-26 annual cap is $30,000 per person. These contributions are taxed at 15% on entry, with Division 293 adding another 15% for high income earners above $250,000.
Claiming a personal tax deduction for eligible contributions reduces your taxable income while still paying only 15% contributions tax inside super.
Non concessional contributions are made from after-tax money. They’re not taxed on entry provided you stay within the $120,000 annual cap (or $360,000 over three years using bring-forward rules). Exceeding the cap triggers penalty tax around 47%.
Earnings tax inside super:
Accumulation phase: most income and capital gain taxed at up to 15%
Long-term capital gains (12+ months): effectively 10% after the fund-level CGT discount
Pension phase: earnings generally tax free up to the $1.9 million transfer balance cap
Side-by-side example: An investor on a 39% marginal rate investing $10,000 yearly from July 2025 to June 2035 in managed funds personally might reach $141,000 after tax. Salary packaging the same amount into super could grow to approximately $165,000—a $24,000 advantage despite locked access until preservation age.
4. Is Your Super Strategy Aligned with Your Broader Tax Position?
Using super strategically requires aligning contribution decisions with your current income, retirement plan, and legislative caps.
Common misalignments include:
High earners (over $180,000) not maximising salary sacrifice, paying 45% on income that could be taxed at 15%
Couples missing spouse contribution tax offset opportunities ($540 annually for contributions to a low-balance partner)
Holding high-growth assets outside super while keeping conservative investments inside—forfeiting decades of lower tax rates on investment returns
When reducing super contributions makes sense:
High non-deductible debt on the family home requiring rapid reduction
Near-term cash needs (e.g., saving a property deposit outside super)
Practical cases:
A 45-year-old on $160,000 salary sacrificing $20,000 annually saves approximately $9,000 in tax each financial year
A 35-year-old on $90,000 claiming $10,000 as personal deductible contributions saves around $3,000 yearly
A couple earning $200,000 and $40,000 respectively can split contributions for the $540 offset plus tax benefits from wealth creation in the lower earner’s name
5. Investment Structures and Ownership: Who Holds What Really Matters
Beyond super, how investments are owned significantly changes how you pay tax on income and capital gains each year.
Individual ownership:
Investment income taxed at your marginal rate
50% CGT discount available on long-term gains
Placing investments in a lower-income partner’s name can reduce family tax burden on investment earnings
Joint ownership:
Income and capital gains typically split according to legal ownership (often 50/50)
Tax effective when partners share similar tax brackets; less helpful with income disparity
Investment company structures:
Flat 25% tax rate for base rate entities (under $50m turnover) or 30% otherwise
No CGT discount available—disadvantages long-term growth assets
Dividends paid with franking credits to avoid double taxation
Trust structures (discretionary/family trusts):
Can distribute income to adult beneficiaries on lower tax rates
Capital gains and franked dividends can sometimes be streamed for tax optimisation
Complex rules apply, especially regarding minors
Structure | Tax on Income | CGT Discount | Distribution Flexibility |
|---|---|---|---|
Individual | Marginal rate | Yes | N/A |
Joint | Split marginal | Yes | Fixed |
Company | 25-30% flat | No | Dividends only |
Trust | Beneficiary rate | Yes (if individual) | High |
Structure
Tax on Income
CGT Discount
Distribution Flexibility
Individual
Marginal rate
Yes
N/A
Joint
Split marginal
Yes
Fixed
Company
25-30% flat
No
Dividends only
Trust
Beneficiary rate
Yes (if individual)
High
6. Gearing, Timing and Other Levers That Can Help or Hurt Your Tax Position
How you fund investments and when you buy or sell can substantially change after-tax results.
Negative gearing occurs when deductible expenses (interest, maintenance) exceed investment income. The net loss reduces other assessable income, lowering your tax bill that year. This popular strategy relies on future capital growth to offset cash flow shortfalls.
Positive gearing means investment income exceeds expenses, creating taxable profit at your marginal rate. Shifting positively geared assets into super or a lower-income spouse’s name can improve outcomes.
Timing strategies:
Defer sales past 12 months to access the CGT discount
Harvest capital losses before 30 June to offset gains
Avoid unnecessary portfolio churn triggering repeated taxable gains
Mini-example: A $300,000 rental property with $20,000 interest and $15,000 rent creates a $5,000 loss, deducting $2,350 at the 47% rate. The same property earning $25,000 rent would face $4,700 tax outside super, versus $1,125 inside.
7. How Money Path Can Help Align Your Investments, Super and Tax Strategy
Money Path focuses on building cohesive investment strategies where your investment portfolio, super and tax planning work together rather than in isolation.
Typical support includes:
Reviewing existing investments and super to identify where high-tax outcomes erode returns
Modelling different structures (individual vs joint, super vs personal) to compare projected results over 10-20 years
Designing contribution strategies using concessional and non-concessional caps without compromising cash flow
Coordinating with your accountant to ensure strategies meet ATO requirements
For example, a professional couple in their 40s earning $280,000 combined aligned their super contributions, investment ownership split, and capital gains timing—saving approximately $25,000 annually without increasing investment risk.
Where your financial situation involves multiple structures or complex family arrangements, seeking professional advice from a qualified financial adviser ensures strategies remain compliant as rules change.
8. Frequently Asked Questions
How do I know if I should invest more through super or outside super?
Consider the trade-off between tax benefits (15% vs your marginal rate) and access. Super offers significant tax savings but remains locked until preservation age. If you need funds within 10 years, outside super may suit better despite higher tax obligations.
If I’m on a lower income, does tax efficiency still matter?
Yes. Even at 19-32.5% marginal rates, long-term compounding of after-tax returns matters. Over 20 years, aligning your wealth strategy with tax can create meaningful differences in your retirement outcomes.
Are negatively geared properties still worth it after interest rate changes?
Negative gearing remains viable where expected capital growth exceeds net cash flow costs. With current rates around 6.5%, focus on realistic growth assumptions and ensure you can service the tax burden during holding periods.
Should I change investments just to save tax before 30 June?
Your investment objectives and financial goals should remain primary. Tax is an important but secondary consideration. Avoid restructuring solely for tax purposes if it compromises your long-term financial planning approach.
Can I move existing investments into super to save tax?
Contribution limits apply, and selling assets first may trigger capital gains tax. Most retail and industry funds require cash contributions rather than in-specie transfers. Seek further advice before proceeding.
How often should I review whether my investments and super are tax-aligned?
Review at least annually before 30 June, and after major life events like pay rises, property purchases, or relationship changes. Legislative changes to super caps and tax thresholds—often announced in Federal Budgets—are another trigger to revisit your approach with a financial advisor.
