The most common mistake
Most self-employed borrowers walk into a bank with their most recent tax return — and get a loan offer 30–40% below what they could have borrowed. The return was prepared with minimising tax as the goal. But borrowing money requires a different goal: showing your income accurately and maximising add-backs. These two goals require different preparation, and your accountant needs to know which one you're doing.
What Banks Actually Look at in Your Tax Returns
When a lender's credit assessor opens your tax return, they're looking for three numbers:
- Taxable income — the headline figure from your personal tax return, after deductions and business expenses
- Add-backs — non-cash or one-off expenses that can be added back to increase your assessed income
- Consistency — whether your income has grown, shrunk, or stayed flat across the two years assessed
They will ask for the last 2 years of personal tax returns plus the Notice of Assessment (NoA) from the ATO for each year. If you operate through a company or trust, they'll also want business tax returns for the same 2 years, plus financial statements (P&L, balance sheet).
Why the Notice of Assessment matters
The NoA is the ATO's confirmation that the return was lodged and accepted. Banks want to see both the return and the NoA. Without the NoA, they may treat the income as unconfirmed. If your lodgements are overdue, the bank will only assess the prior year — cutting your evidence in half.
Step-by-Step: How to Prepare Before Applying
Lodge all outstanding tax returns immediately
If you have lodgements overdue — even for prior years — file them now. Banks typically need the last 2 years lodged and with NoAs issued. Allow 4–6 weeks for the ATO to process and issue the NoA before your loan application. Don't apply while returns are pending.
Brief your accountant on your loan timeline
Tell your accountant you're planning to apply for a home loan in the next 6–12 months. This lets them structure your next return with income maximisation in mind — capturing all legitimate add-backs, not over-claiming deductions you don't actually incur, and providing an accountant's letter when needed.
Identify your add-back items
Work through your return line by line and flag the add-backs that apply (see list below). Your accountant should document these clearly so your broker can present them to the lender's credit team without ambiguity.
Check your 2-year income trend
Most lenders use the lower of the two years assessed income or an average. If Year 1 income was $90K and Year 2 was $120K, many lenders use $105K. If Year 2 dropped from Year 1, they'll use Year 2. Plan your application timing around income trends — if you know your next return will be stronger, it may be worth waiting.
Keep business and personal finances separate
Lenders need to clearly separate business income from personal income. Mixed accounts create reconciliation headaches for credit assessors and can result in income being discounted. Before applying, ensure you have separate business and personal bank accounts — and that you've been paying yourself a consistent wage or drawings from the business.
Don't make major business changes right before applying
Switching from sole trader to company, changing ABNs, restructuring a trust — all of these can reset lenders' assessment clock. If you're planning structural changes to your business, do them either well before (18+ months) or after your loan settles.
Add-Backs: The Items That Increase Your Assessed Income
Add-backs are legitimate non-cash or non-recurring expenses that lenders can add back to your taxable income to arrive at your true earning capacity. Not all lenders allow the same add-backs — this is where broker expertise matters significantly.
The Tax Minimisation Trap
Many business owners tell us the same story: "My accountant is amazing — I barely pay any tax." That's great for cashflow. But it creates a serious problem when applying for a home loan.
If your taxable income is $65,000 but your business generates $180,000, and the difference is absorbed by deductions, depreciation, trust distributions to family members, or payments to related entities — the bank only sees $65,000. At that income, they might lend you $350,000–$400,000. The full income picture tells a completely different story.
The fix isn't to cheat on your tax return. It's to:
- Maximise add-backs that banks allow
- Use a low doc or alt doc product if your declared income doesn't reflect your actual income
- Use a BAS-based lender who assesses GST turnover rather than taxable income
- Brief a specialist broker who can choose the right lender and present the application correctly
What not to do
Do not ask your accountant to "adjust" your income in your tax return to get a better loan result. Do not omit deductions you're entitled to. Do not inflate income that isn't genuine. These are forms of fraud under the National Consumer Credit Protection Act and can result in criminal prosecution, loan cancellation, and a permanent black mark with lenders. The legitimate methods above give you a better outcome without any legal risk.
Timing: When to Apply Relative to Your Tax Return
Application timing relative to your lodgement cycle has a big impact on which years' income the bank can assess.
- Best window: Apply 6–8 weeks after lodging your most recent return and receiving the NoA. This gives you the freshest income data and the most recent 2-year picture.
- Avoid applying: In the months immediately after 30 June before you've lodged. The bank can only assess up to the prior year — and if that was a lower year, your borrowing power is artificially constrained.
- If you're on a lodgement extension: Some accountants lodge returns on extension (up to May the following year). Lenders generally allow this but may require a letter from the accountant confirming the extension is legitimate and what the expected income figure is.
Want to know what your tax return actually supports?
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Structuring Your Return for Maximum Borrowing Power: The Accountant Brief
The single most effective preparation step is a structured conversation with your accountant before they lodge your return. Here's the brief to give them:
The 5-point accountant brief
- I'm planning to apply for a home loan in the next 6–12 months. Please structure this return with that in mind.
- Identify every available add-back — especially depreciation and any non-recurring expenses — and document them clearly with separate schedules.
- Don't over-claim deductions that I don't genuinely incur. If a deduction is borderline, don't claim it.
- Ensure the return reflects my actual net income after legitimate expenses — not an artificially low figure designed solely for tax minimisation.
- Be ready to write an accountant's letter when I apply, confirming my income, business structure, ABN registration date, and self-employed status.
The accountant's letter checklist
Most lenders require an accountant's letter on official letterhead to accompany the application. It must include:
- Confirmation of self-employed / business owner status
- ABN number and GST registration date
- Length of time in business (years and months)
- Current trading status (actively trading)
- Estimated income for the current financial year (if the most recent return is the prior year)
- Accountant's name, firm, phone, and professional registration number
Using a different lender if the returns don't reflect your income
If after all legitimate add-backs your declared income still doesn't reflect your actual earning capacity, the solution is a low doc or alt doc product. Rather than relying on tax returns, these products allow income verification via:
- Last 12 months' BAS statements (GST turnover ÷ 1.1, then × 40–50% as assessed income)
- Business bank statements (12 months' average monthly deposits)
- Self-certified income declaration (accountant co-signs)
The trade-off is a higher interest rate (typically 0.3–1.0% above full doc rates) and a maximum LVR of 80% without additional restrictions. For many self-employed borrowers, the ability to borrow 2–3× more outweighs the rate difference.