Banks don't look at what you earn — they look at what your tax return says you earn. For self-employed borrowers, those two numbers are often very different. Understanding exactly how lenders calculate your income is the key to maximising your borrowing power.
2 yrs
Tax returns required
+$40k
Typical add-backs
40+
Lenders on our panel
3%
APRA buffer added
Why Self-Employed Income Assessment Is Different
When a salaried employee applies for a home loan, income verification is straightforward: payslips plus the employer's verification letter. The number on the payslip is the number the bank uses.
Self-employed borrowers face a fundamentally different system. Banks must estimate your income from your tax returns and notices of assessment, which reflect what you reported to the ATO — not what actually flowed through your accounts. A business owner who earned $200,000 in revenue but claimed $90,000 in deductions presents a $110,000 taxable income to a lender.
The challenge is that many of those deductions are legitimate tax minimisation strategies — depreciation on equipment, vehicle expenses, home office costs — that don't represent money you actually spent from your personal cash flow. Banks know this, which is why the add-back process exists.
The Standard Bank Income Calculation
For full-doc self-employed applications, most lenders follow this sequence:
- Obtain the last two tax returns (personal and business/company/trust)
- Take the average taxable income across the two years (or use the lower year if income declined)
- Add back allowable deductions — non-cash expenses that didn't reduce actual cash flow
- Apply the APRA serviceability buffer (+3% above the assessment rate) to test whether you can service the loan at a higher rate
- Compare against HEM (Household Expenditure Measure) — if your declared expenses are below HEM benchmarks, the bank uses HEM as a floor
What Add-Backs Are — and Why They Matter
Add-backs are the single biggest lever self-employed borrowers can use to increase their assessed income. These are deductions that appeared in your tax return but didn't reduce the money available to you for mortgage repayments.
Depreciation
Non-cash accounting entry. Typically the largest add-back for business owners with equipment, vehicles, or fit-outs. Fully addable back in most cases.
Home Office Expenses
A portion of rent/mortgage, utilities, and internet claimed as business use. Commonly accepted add-back as this doesn't represent additional expenditure.
Personal Vehicle Costs
Vehicle expenses claimed through the business for a car you also use personally. The business portion is considered an add-back since the vehicle is a personal asset.
One-Off / Non-Recurring Expenses
Large one-off costs (legal fees, redundancies, equipment purchases) that reduced your income in one year but won't recur. Strong candidates for add-back with documentation.
Company Retained Profits (Directors)
Some lenders will consider a portion of profits retained in your company as available income if you control the company and can demonstrate access to those funds.
Real Add-Back Example
A tradesperson earning $130,000 taxable income claimed $8,000 depreciation, $4,000 home office, and $5,500 vehicle costs. After adding $17,500 back, assessed income = $147,500 — increasing borrowing power by approximately $110,000.
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Find out exactly how lenders will assess your income — including which add-backs you qualify for and which lender tier is most likely to approve you.
How Different Lenders Treat Self-Employed Income
Not all lenders apply the same rules. Understanding how different tiers approach income assessment can make a significant difference to your outcome:
| Lender Tier | Income Method | Add-Backs | ABN Required |
|---|---|---|---|
| Major Banks (CBA, ANZ, NAB, WBC) | 2yr average; lower year if declining | Limited; depreciation only at some | 2+ years |
| Second-Tier (Macquarie, ING, Suncorp) | 2yr average or most recent year | Depreciation + home office + vehicle | 2+ years (some 1yr) |
| Specialist Brokers / Alt-Doc ⭐ | BAS or bank statements (12 months) | Broad add-back acceptance | 6–12 months |
| Non-Conforming (Pepper, Liberty) | 6 months BAS or accountant declaration | Flexible; case by case | 1yr acceptable |
The right lender depends on your ABN age, structure type, income trend, and how your accounts are prepared. A broker who specialises in self-employed home loans will know which lender's methodology works best for your specific tax return profile.
The HEM Trap — and How It Affects You
Even with strong assessed income, many self-employed borrowers find their borrowing power limited by the Household Expenditure Measure (HEM). This is a benchmark lenders use as a minimum living expense figure — if your declared expenses are below HEM for your family size and postcode, the lender uses HEM instead.
For many self-employed borrowers who run personal expenses through the business, declared living expenses look deceptively low — which triggers the HEM uplift. Working with a broker who understands how to structure your expense declaration can prevent unnecessary HEM inflation on your application.
What Documents You'll Need
For a standard full-doc self-employed assessment, prepare:
- Last 2 years personal tax returns (with ATO Notice of Assessment for each year)
- Last 2 years business/company/trust tax returns (if applicable)
- Last 2 years financial statements (P&L and balance sheet) — ideally CPA-prepared
- Last 6 months business bank statements
- ABN registration certificate confirming registration date
- Last 2 years BAS statements (if registered for GST)
If you're applying via a low-doc pathway (see our full low doc guide), the documentation requirements are reduced — but the interest rate is typically higher, and maximum LVR may be capped at 80%.
To understand exactly how much self-employed borrowers can typically borrow based on different income levels and structures, our detailed guide walks through the numbers with worked examples.
Frequently Asked Questions
Banks use your taxable income from your tax return — after deductions. However, add-backs (depreciation, home office, vehicle, one-offs) can significantly increase the figure lenders use. A specialist broker will identify every legitimate add-back to maximise your assessed income.
For full-doc loans at major banks, yes. But if you have less than two years' history or prefer not to use your tax returns, low-doc and alt-doc options exist — using BAS statements, an accountant's declaration, or 12 months of business bank statements instead.
Add-backs are deductions that reduced your taxable income but didn't reduce your actual cash flow — depreciation, home office, vehicle costs, one-off expenses. A typical self-employed borrower adds $10,000–$40,000 back, increasing borrowing power by $60,000–$250,000.
Some lenders average two years; others allow use of the higher year if income has recovered. Specialist lenders are more flexible about income fluctuations. A broker can identify which lender's methodology produces the best outcome for your specific income pattern.
No — lenders look at income flowing to you personally: director salary, dividends, trust distributions. Your accountant should prepare a summary showing what actually flowed to you personally in each year. A broker presents this to the lender in the most favourable structure.
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