If you earn $180,000 as a business owner and pay that to yourself as salary, you’re taxed at 47 cents in the dollar on income above $135,000. If you redirect $30,000 of that into superannuation as a concessional contribution, it’s taxed at just 15 cents. That’s a $9,600 difference — legal, ATO-endorsed, and available to every business owner in Australia. Yet most business owners under-utilise their super contribution cap significantly, leaving thousands of dollars in unnecessary tax every single year.

Superannuation is not just a retirement savings vehicle. For business owners, it is the most powerful tax minimisation tool available under Australian law — combining a tax deduction at entry, low tax on earnings, and complete tax exemption in retirement. In this guide, we cover the strategies that matter most in 2026–27: concessional contributions, how to claim a superannuation contributions tax deduction, catch-up contributions, spouse strategies, SMSF property, and Division 293.

Why Super Is the Most Tax-Effective Structure in Australia

Three numbers explain the super advantage:

• Concessional contributions tax: 15%. Compare this to a personal marginal rate of up to 47%. On a $30,000 concessional contribution, the tax saving is up to $9,600 in a single year.
• Earnings tax inside super: 15% (10% for capital gains on assets held more than 12 months). Money growing inside super compounds at a significantly lower tax rate than in personal name or in a company.
• Pension phase: 0%. Once you are over 60 and have commenced a pension from your super fund, both earnings and withdrawals are completely tax-free (within the transfer balance cap).

These three advantages compound over decades. A business owner who consistently maximises their super contributions throughout their working life — rather than leaving money in their personal name or company — can generate dramatically better after-tax wealth at retirement. Super is also protected from most creditors under the ATO’s superannuation rules, which matters enormously for business owners who carry personal risk.

Concessional Contributions: The $30,000 Cap (2026–27)

Concessional contributions are pre-tax (before-tax) contributions to superannuation, taxed at 15% inside the fund rather than at your personal marginal rate. For 2026–27, the concessional contributions cap is $30,000 per person per year. This includes:

• Employer Superannuation Guarantee contributions (currently 12% of ordinary time earnings — see our Super Guarantee rate guide for the full schedule and compliance details)
• Salary sacrifice contributions
• Personal deductible contributions (if you are self-employed or meet the 10% test)

Exceeding the cap results in the excess being included in your assessable income and taxed at your marginal rate, with an excess concessional contributions charge. Tracking contributions across all funds is essential, especially if you have multiple super accounts.

How to Claim Super Contributions as a Tax Deduction

One of the most effective — and under-used — strategies for business owners is making personal super contributions and claiming them as a tax deduction. If you are self-employed, a sole trader, or a partner in a partnership (or if less than 10% of your income comes from employment), you can contribute to super personally and claim the full amount as a deduction in your tax return.

The process is straightforward:

• Contribute to your super fund (any complying superannuation fund or SMSF)
• Lodge a Notice of Intent to Claim a Deduction with your super fund before lodging your tax return (or before 30 June of the following financial year, whichever is earlier)
• Your fund will acknowledge the notice and classify the contribution as concessional — taxed at 15% inside the fund
• You claim the contribution as a personal tax deduction in your income tax return

A practical example: A self-employed architect earns $200,000 and contributes $25,000 to super in 2026–27. The $25,000 is claimed as a deduction at a marginal rate of 47%. Tax saving: $11,750. Tax paid inside the fund: $3,750 (15%). Net benefit: $8,000 — from a single contribution before 30 June. For more detail on personal super contributions, see the ATO’s guidance.

Catch-Up Contributions: Accessing Unused Cap Amounts

Since 1 July 2019, individuals with a total super balance below $500,000 can carry forward unused concessional contributions cap amounts from the previous five years. This is one of the most powerful strategies available to business owners who had lower-income years during start-up phases, family leave, or years of heavy business reinvestment.

Example: Your total super balance is $380,000. Over the past three financial years, you contributed less than the annual cap and have $42,000 in unused cap carried forward. In the current year, you can contribute up to $72,000 as concessional contributions ($30,000 current cap + $42,000 carried forward). At a 47% marginal rate, that’s a potential tax saving of $33,840 in a single year — far exceeding anything available through most other deductions.

Check your available carry-forward balance through myGov (ATO linked services) or ask your accountant to check via the ATO Tax Agent Portal. This balance is updated annually after super funds report.

Spouse Contributions and Super Splitting

Spouse Contribution Tax Offset

If your spouse earns less than $37,000 per year, you can make after-tax (non-concessional) contributions to their super fund and receive a tax offset of up to $540 per year. The offset phases out between $37,000 and $40,000 of spouse income. Contributing $3,000 to your spouse’s super generates the full $540 offset — a small but straightforward win that requires minimal effort.

Superannuation Splitting

Super splitting allows you to transfer up to 85% of your annual concessional contributions to your spouse’s super fund. This doesn’t reduce your tax bill directly, but it equalises super balances between spouses — which becomes critically important as you approach retirement. When both spouses can maximise the tax-free pension phase (currently $1.9 million per person), the combined benefit is $3.8 million in tax-free pension assets, rather than one spouse being capped while the other has a small balance. Evening balances between spouses is also a key defence against the new Division 296 tax on super balances over $3 million.

Using an SMSF to Hold Your Business Premises

One of the most powerful strategies for business owners is purchasing their commercial premises through a self-managed super fund (SMSF). Here is how the structure works: One powerful option is buying your business premises through your SMSF and leasing it back to your business at market rent.

• Your SMSF acquires the commercial property (it can borrow to do so using a limited recourse borrowing arrangement — LRBA)
• Your business leases the property from the SMSF at arm’s length commercial market rent
• Lease payments flow into the SMSF — taxed at 15% in accumulation phase or 0% in pension phase
• Lease payments are fully deductible to your business
• When you eventually sell the property during pension phase, any capital gain may be completely tax-free
• The property is protected from business creditors within the SMSF

There are strict rules governing related-party transactions in SMSFs. The lease must be on arm’s length commercial terms, and the property must be “business real property.” An SMSF that breaches these rules can lose its complying status and be taxed at the top marginal rate — so specialist advice is essential. We walk through the full requirements in our SMSF setup guide.

Division 293 Tax: The Extra Super Tax for High Earners

If your income (including concessional super contributions) exceeds $250,000 in a financial year, you are liable for an additional 15% Division 293 tax on your concessional contributions — bringing the effective tax rate on those contributions to 30%. Even at 30%, concessional contributions remain more tax-effective than income at 47% — the benefit is reduced but not eliminated.

Division 293 tax is assessed by the ATO and either deducted from your super fund balance or paid personally, depending on your election. For more detail on how it works and who is affected, see our dedicated guide to Division 293 tax. For business owners approaching very large super balances, our Division 296 tax guide covers the proposed additional tax for balances over $3 million.

Non-Concessional Contributions: Parking After-Tax Money in Super

Non-concessional contributions are after-tax contributions to super — not deductible, but once inside, they grow in a low-tax environment and can be drawn out tax-free in pension phase. The non-concessional contributions cap for 2026–27 is $120,000 per year. If you are under 75 and your total super balance is below $1.66 million, the bring-forward rule allows you to contribute up to $360,000 in a single year.

This is particularly useful when you receive a windfall — business sale proceeds after applying the CGT retirement exemption, an insurance payment, or an inheritance — and want to shelter the money inside super’s low-tax environment quickly. For more on the relationship between CGT concessions and super contributions, see our CGT Small Business Concessions guide.

Frequently Asked Questions

Can I claim a tax deduction for my super contributions as a business owner?

Yes — if you are self-employed or derive less than 10% of your income from employment, you can make personal super contributions and claim them as a deduction. You must lodge a Notice of Intent to Claim a Deduction with your super fund before lodging your tax return. The contribution is then treated as concessional and taxed at 15% inside the fund. This is one of the most accessible and high-value deductions for business owners.

What happens if I exceed the concessional contributions cap?

Excess concessional contributions are included in your assessable income and taxed at your marginal rate, with an excess concessional contributions charge applying. You receive a 15% tax offset to avoid double-counting the tax already paid inside the fund. The ATO issues an excess contributions determination and you can elect to release the excess from super to pay the additional tax.

How do I check my unused concessional contributions carry-forward amount?

Log in to your myGov account and navigate to the ATO linked services. Your available carry-forward balance is listed under the super section. This reflects unused concessional cap amounts from the past five years, provided your total super balance was below $500,000 on 30 June of the prior year. Your accountant can also access this via the ATO Tax Agent Portal.

Can my company contribute to my super fund?

Yes. If you are a director-employee of your own company, the company can make concessional contributions to your super fund on your behalf. These are deductible to the company and taxed at 15% inside your fund — far better than paying you additional salary at up to 47%. Contributions must meet the work test if you are aged 67–74. Standard contribution forms or a super clearing house are used to make and report the contribution.

What is the transfer balance cap?

The transfer balance cap is $1.9 million per person (from 1 July 2023) — the maximum amount you can transfer into the tax-free pension phase. Any super balance above this must remain in accumulation phase (taxed at 15%) or be withdrawn. For couples, careful planning to equalise both spouses’ pension accounts — using super splitting and spouse contributions — maximises the combined tax-free retirement assets.

Frequently Asked Questions

This article contains general advice only and does not take into account your specific circumstances. Please speak with a qualified accountant or tax adviser before making financial decisions.

Superannuation is one of the most effective tax minimisation strategies available to Australian business owners.

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