Tips To Maximise Your Tax Refund In Australia

Tax time often feels straightforward until you’re part of a couple. We see it every year in Mildura. Two people under one roof, sharing bills and plans, yet dealing with a tax system that treats some things as individual and others as household-based. That’s where refunds shrink, surcharges appear, and confusion sets in. Marriage doesn’t mean joint tax returns in Australia, but it does change how the ATO looks at your income, deductions, and thresholds. Get it right, and tax time runs smoothly. Get it wrong, and you can be chasing answers long after 30 June.

Marriage and Taxes in Australia: How Couples Can Reduce Tax and Boost Their ATO Refund

Tax time looks simple on the surface. Lodge your return. Get your refund. Move on.
For couples, it rarely plays out that cleanly.

Over the years, we’ve seen plenty of married and de facto couples around Mildura caught off guard. One earns more, the other claims less, and suddenly the refund shrinks, or a Medicare levy surcharge appears out of nowhere. Same household. Same bills. Different tax outcome.

The reason is simple. Australia does not tax couples jointly, but the ATO still looks at you as a unit for several key rules. Miss that detail, and you can end up rowing against the current.

Let’s start with how marriage actually changes your tax position.

How Marriage Changes Your Tax Position in Australia

Marriage does not mean you lodge one tax return. Each person still lodges their own income tax return. That part is clear.
Where couples slip up is assuming that means everything else stays separate. It doesn’t.

Some tax rules follow the individual. Others follow the household. Knowing the difference saves money and avoids awkward letters from the ATO.

Married vs Single Tax Status — What the ATO Actually Cares About

From the ATO’s view, your relationship status matters when you live together as a couple on a genuine domestic basis. This includes:

• Married couples
• De facto couples
• Same-sex couples

It does not matter whose name is on the lease or who pays the bills.

We’ve had clients say, “But we keep separate bank accounts.” The ATO doesn’t care. If you share a life, they treat you as spouses.

What stays individual:

• Income tax rates
• PAYG withheld
• Work-related deductions
• Most offsets

What shifts to a combined view:

• Medicare levy surcharge
• Private health insurance thresholds
• Family tax benefit calculations

When the ATO Treats You as a Couple for Tax Purposes

The Medicare levy surcharge is the biggest trap. We see it every year.

Here’s a common Mildura example.

One partner earns AUD 115,000 working in health. The other works part-time retail on AUD 28,000. Individually, neither expects an issue. Combined, their household income tips over the surcharge threshold. No private health cover. Bang. Extra tax.

The same rule applies to:

• Private health insurance rebates
• Family income tests
• Some super contribution offsets

The ATO uses combined income, not gut feel.

A quick timeline we run through with couples:

Before 30 June

• Check the combined taxable income
• Review private health cover.
• Confirm super contributions

July–August

• Wait for pre-fill data.
• Check income details match across both returns.

Before lodging

• Recheck Medicare levy surcharge position.
• Confirm spouse details are entered correctly.

Miss one step and the refund can leak like a sieve.

Income Splits, Offsets, and Why Balance Matters

If we had a dollar for every time a couple asked, “Can we move some income to the lower earner?”, we’d retire early.
It’s a fair question. It just doesn’t work that way in Australia.

Income splitting is one of the most misunderstood parts of the tax system. The rules are tight, and the ATO does not bend.

Why Australia Does Not Allow Income Splitting for Employees

In Australia, income is taxed to the person who earns it. Full stop.

If your name is on the payslip, the income is yours. You cannot shift it to your spouse to lower the tax bill, even if:

• You share finances
• One partner stays home.
• One income supports the household.

We’ve seen couples try creative solutions. Paying “family wages”. Moving money between accounts. Claiming deductions in the lower earner’s return. None of it survives an ATO review.

Here’s the pub test we use with clients:
If the ATO asked, “Who earned this money?”, would the answer be clear? If yes, that’s who pays the tax.

Common myths we hear:

• “We’re married, so it averages out.”
• “The higher earner can transfer deductions.”
• “We’ll just split the refund.”

The ATO’s systems are sharp. PAYG data, STP reporting, and bank interest matching leave little room to hide.

Situations Where Income Balance Still Affects Your Tax Outcome

Even though income can’t be shifted, balance still matters.

Combined income affects:

• Medicare levy surcharge
• Private health insurance rebates
• Spouse super contribution offsets
• Family tax benefits

A simple example makes it clear.

Scenario:

• Partner A earns AUD 140,000
  
  
• Partner B earns AUD 18,000

Individually:

• Partner A pays a higher marginal tax
• Partner B pays little tax.

As a couple:

• The Medicare levy surcharge applies if no private cover
• Private health rebate reduces
• Some offsets disappear

Claiming Deductions as a Couple Without Triggering ATO Issues

This is where couples either do things right or dig a hole.

Deductions follow the person who incurs the expense and earns the income. Marriage does not change that rule.

Work-Related Expenses — What Each Spouse Can and Cannot Claim

Each spouse claims their own work-related deductions. There is no pooling.

We see this mistake often:

• One partner has strong deductions
• The other has a high income.
• They try to “balance” things.s

It doesn’t work.

A realistic example:

• One partner is a school teacher
• The other is a self-employed tradie.

The teacher can claim:

• Classroom resources
• Professional development
• Work-related travel

The tradie can claim:

• Tools
• Vehicle use
• Safety gear

They cannot cross-claim. Ever.

If the expense doesn’t link directly to your own income, it fails the test.

Avoiding Duplicate Claims on Shared Expenses

Shared expenses are where ATO audits usually start.

Common problem areas:

• Home internet
• Mobile phones
• Working from home power
• Shared equipment

The rule is simple:

• You can only claim your portion
• The claim must reflect actual use.

Example we see often in regional homes:

• One NBN service
• Two adults working from home
• One claims 100%

That’s an easy adjustment for the ATO.

A cleaner approach:

• Split usage based on hours
• Keep a simple log
• Use reasonable percentages

Checklist for shared expenses:

• Who uses it
• How often
• For what work purpose
• How the split was calculated

Keep it boring. Boring passes audits.

Super Contributions and Spouse Tax Benefits

Super is one of the quiet achievers in tax planning for couples. It rarely gets attention because the benefit isn’t instant. But over time, it can take a serious bite out of taxes.

We often tell couples this: ” Super rewards patience. Those who plan early usually thank themselves later.

Spouse Super Contributions and Tax Offsets Explained

If one spouse earns a low income or stays home, the higher earner may qualify for a spouse contribution tax offset.

How it works in plain terms:

• One spouse contributes after-tax money into the other’s superannuation
• The contributor may receive a tax offset.
• The lower-income spouse builds a super balance.

Key points couples miss:

• The receiving spouse must earn below the income threshold
• The contribution must be after tax.
• The offset caps out quickly.

A typical scenario we see:

• One partner works full-time in healthcare
• The other reduces hours after having kids.
• Household income stays high.
• Super balances drift apart.

A spouse’s contribution evens the scales and trims tax at the same time.

When Contribution Splitting Makes Sense

Contribution splitting is different. It allows one spouse to move part of their concessional contributions to the other’s super account.

Why couples use it:

• Balance the superannuation between partners
• Prepare for the earlier retirement of one spouse.
• Reduce future tax on withdrawals.

It’s not about short-term refunds. It’s about long-term control.

Self-Employed Spouses and Family Businesses

This is where planning matters most and mistakes cost the most.

Family businesses can claim deductions others can’t. They can also attract attention if handled poorly.

Paying a Spouse — What the ATO Allows

Yes, you can pay your spouse. But only if the work is real and the pay is fair.

The ATO looks for:

• Actual duties performed
• Market-rate wages
• Proper payroll records

What fails audits:

• Inflated wages
• No timesheets
• No PAYG withholding

A Mildura example we see often:

• One spouse runs a trade business
• The other handles admin and bookings.
• Wages are paid properly.
• Super is paid
• Records are clean

That setup passes scrutiny. Shortcuts don’t.

Sole Trader vs Partnership — Which Structure Works Better for Couples

Some couples operate as:

• Sole trader with spouse employee
• Partnership with shared income

Each has trade-offs.

Lodgement Timing Strategies for Couples

Timing can change outcomes. Lodging too early is one of the most common mistakes we see.

Why Lodging Too Early Can Cost Couples Money

Early July lodgements often miss:

• Bank interest
• Health fund data
• Employer adjustments

When one return is lodged early, and the other isn’t, mismatch issues appear.

We usually advise:

• Wait until late July or August
• Confirm both returns are ready.
• Lodge together if possible.

Using a Registered Tax Agent as a Couple

Couples using agents benefit from:

• Higher average refunds
• Better threshold planning
• Deadline extensions

Another bonus people forget:
Tax agent fees are deductible next year.

Record-Keeping Systems That Actually Work for Couples

Good records stop arguments. They also stop audits.

Shared Digital Systems That Reduce Missed Deductions

What works in real households:

• One shared cloud folder
• Separate folders per spouse
• Monthly check-ins

The ATO myDeductions app helps:

• Snap receipts
• Track mileage
• Store notes

Five minutes a week beats five hours in July.

What Records Does the ATO Ask for First

If reviewed, the ATO usually asks for:

• Receipts
• Logs
• Explanations

Remember: 

• Keep records for five years
• AUD 300 without receipts still needs explanation

Common Tax Mistakes Married Couples Make Every Year

If it sounds dodgy over a counter meal, it usually is.

Examples:

• Regular clothes
• Private gym memberships
• Family holidays

Income the ATO Already Knows About

The ATO data-matches:

• Side hustles
• Crypto trades
• Foreign income

If it’s reported elsewhere, assume the ATO sees it.

For couples, tax time isn’t about shortcuts. It’s about knowing which rules apply to individuals and which apply to households, then planning before 30 June.

We see couples across Mildura lose refunds each year by acting too late. Missed super contributions, rushed claims, and ignored thresholds all add up. The couples who do best keep clean records, plan together, and lodge with confidence. When income stays individual, thresholds stay shared, and claims pass the pub test, the ATO rarely pushes back.