The self-employed refinancing challenge
Australia has approximately 2.5 million self-employed people — business owners, sole traders, contractors, freelancers, and company directors. When it comes to mortgage refinancing, this group faces a genuine additional challenge: their income is harder to verify, and lenders treat it more conservatively than PAYG employment income.
The root issue is that standard lenders assess self-employed income from tax returns — specifically, the lower of your last two years of taxable income. For many business owners, taxable income significantly understates actual cash income because legitimate business deductions (depreciation, vehicle costs, superannuation contributions, write-offs) reduce the taxable figure while cash earnings remain strong. The result: a business generating solid income can look borderline on a standard lender's serviceability assessment.
The key insight: Self-employed borrowers do not face worse interest rates — they face more complexity in the income assessment process. With the right broker and the right lender, a self-employed borrower with strong business income can access identical rates to any PAYG employee at the same LVR. The work is in the matching, not in accepting a rate penalty.
How lenders assess self-employed income
The income assessment pathways
Standard full-doc: 2-year tax return average
Most mainstream lenders take the lower of your last 2 years' personal taxable income (or business net profit if a company/trust). Consistent or growing income over 2 years is required. Suitable if your tax returns show strong income and you have been in business 2+ years.
Add-back methodology
Some lenders will "add back" specific non-cash deductions — depreciation, one-off write-offs, super contributions — to your taxable income to calculate a higher "add-back income." This can increase your assessed income by 15–40% depending on your business structure. Not all lenders offer this; your broker identifies which ones do.
Accountant's declaration / letter
A letter from your accountant confirming your current year's income, business stability, and expected earnings can supplement tax return assessment. Particularly useful when your most recent year's income significantly exceeds the 2-year average (e.g. a strong 2024–25 year following a weaker 2023–24).
Alt-doc / bank statement lending
Lenders assess income from 6–12 months of business bank statements showing consistent income deposits — no tax returns required. Typically carries a rate premium of 0.3–0.8%. Suited to borrowers with strong cash flow but whose tax returns are heavily reduced by legitimate deductions, or who have been in business less than 2 years.
Documents checklist for self-employed refinancing
| Document | Full-doc | Alt-doc | Notes |
|---|---|---|---|
| Personal tax returns (2 years) | ✓ Required | Not required | With ATO Notices of Assessment |
| Business / company / trust tax returns | ✓ Required | Not required | Sole traders: Schedule of Business Income |
| Financial statements (2 years) | ✓ Required | Not required | P&L, balance sheet, prepared by accountant |
| Business bank statements | 3 months | 6–12 months | Shows income deposits and regular outgoings |
| Accountant's letter | Helpful | ✓ Required | Confirms ABN, trading status, income |
| BAS statements (6–12 months) | Sometimes | ✓ Required | For GST-registered businesses |
| ABN registration confirmation | ✓ Required | ✓ Required | Must typically be 2+ years registered |
| Current loan statements | ✓ Required | ✓ Required | All mortgages, car finance, etc. |
Business structures and how they affect assessment
Sole trader
Income is assessed from the personal tax return Schedule of Business Income. Simplest structure for lenders to assess — your business profit is your income. Strong 2-year history with consistent or growing profit is ideal. If your business is in its first 1–2 years, alt-doc lending may be necessary.
Company director / wage earner from own company
Lenders assess your director's salary (as shown on your personal tax return). If you take a low salary and retain profits in the company, the salary figure alone may understate your total economic benefit from the business. Some lenders will include company profits attributable to you in the assessment — this requires company financials and an accountant's letter confirming the profit and your shareholding.
Trust structures
Trust distributions shown on your personal tax return are generally assessable. Complex trust structures — family trusts with multiple beneficiaries, hybrid trusts — require lenders with specific trust assessment expertise. Not all lenders handle trust income equally; broker selection is critical for borrowers with trust structures.
Timing your refinance as a self-employed borrower
The optimal time to refinance is when you have 2 recent years of strong, complete tax returns lodged with the ATO. Lenders want to see:
- ABN registered for 2+ years (some lenders accept 1 year with strong documentation)
- Tax returns lodged for both years — not just prepared, but actually lodged and Notices of Assessment issued
- Consistent or growing income across both years — a significant drop in year 2 triggers questions
- No significant outstanding ATO debts (payment arrangements can be acceptable but must be disclosed)
Strategic timing tip: If your income dipped in one year (COVID impacts, a bad business year, maternity/paternity leave), waiting until you have two consecutive strong years before refinancing will significantly improve the assessment outcome. The savings from a better rate over 5–10 years will far exceed the cost of waiting 12 months to refinance from a stronger position.
What self-employed borrowers can and cannot do
- Can: Access the same headline interest rates as PAYG borrowers at the same LVR
- Can: Use add-back methodology to boost assessed income with the right lender
- Can: Use alt-doc lending if tax returns understate income — with a small rate premium
- Can: Refinance during a strong income year even if the prior year was weaker, with the right lender
- Cannot: Use anticipated future income — lenders assess historical actual income only
- Cannot: Rely on verbal confirmation of income — documentation is always required
- Should not: Attempt to maximise deductions in the year before refinancing — lower taxable income means lower assessed income. Plan deduction timing with your accountant before applying.