The standard home loan application assumes you are a PAYG employee with two years of payslips, a group certificate, and an easily verified income history. For business owners, this model falls apart immediately — not because your income is insufficient, but because tax-minimisation strategies, write-offs, retained profits, and business structures all make your declared income look lower than it actually is.
Low doc and alt doc loans were created for this reality. They allow business owners to verify income through alternative documentation — business bank statements, BAS statements, accountant letters — rather than relying solely on tax returns that have been optimised by a good accountant.
Low Doc vs Alt Doc: The Distinction That Matters
These terms are often used interchangeably, but they describe different products with different risk profiles and lender availability.
Traditional low doc — largely phased out after the Global Financial Crisis — required little more than a signed borrower declaration: "I declare my income is X." Minimal third-party verification. This type of product is now rare and mostly confined to non-conforming lenders.
Alt doc (alternative documentation) is the modern version: you don't provide tax returns and full financials, but you do provide alternative income evidence that can be independently verified. This is now the standard "low doc" product at second-tier and specialist lenders.
When a broker or lender says "low doc" in 2026, they almost always mean alt doc. The distinction matters because alt doc is more likely to be approved at better rates by more lenders — the additional documentation provides the lender with genuine income verification, just via a different pathway.
The Three Main Alt Doc Income Verification Methods
Method 1: BAS Statements (Most Common)
- 6–12 months of Business Activity Statements lodged with the ATO
- Lender derives income from reported GST turnover (typically 50–70% of gross turnover)
- Most widely accepted alt doc method across second-tier and specialist lenders
- Requires GST registration (turnover over $75k/year threshold)
- Advantage: ATO-lodged documents are hard to dispute — strong verification
Method 2: Accountant's Letter
- Letter from a registered accountant (CA or CPA) confirming your annual income
- Accountant must have prepared your financials for at least 2 years
- Must be on the accountant's letterhead with licence number
- Accepted by most specialist lenders; fewer second-tier banks
- Advantage: can reflect income more accurately than BAS-derived figures
Method 3: Business Bank Statements
- 12 months of business transaction account statements
- Lender analyses average monthly deposits to derive income
- Common expenses and intercompany transfers may be excluded
- Most useful when BAS understates actual cash flow
- Often used in combination with BAS or accountant letter
Which Lenders Offer Low Doc / Alt Doc Products?
Major banks (CBA, ANZ, NAB, Westpac) do not offer low doc or alt doc products. You are working with second-tier banks and specialist lenders — and the quality and rate of what you access depends heavily on how long your ABN has been registered and how strong your income evidence is.
| Lender tier | Min ABN | Max LVR | Rate premium | Best for |
|---|---|---|---|---|
| Second-tier banks (ING, Suncorp, Macquarie) | 2 years | 80% | +0.2–0.4% | Established businesses, strong BAS history |
| Specialist alt doc lenders (Pepper, Liberty, Bluestone) ⭐ | 2 years (some 12 mo) | 80–85% | +0.4–0.8% | Most business owners — dedicated alt doc products |
| Non-conforming lenders | 6–12 months | 70–75% | +0.8–1.5% | Short ABN history, credit issues, complex structures |
The specialist alt doc tier — Pepper Money, Liberty Financial, Bluestone Mortgages — is where most business owner applications land. These lenders have dedicated teams who understand self-employed income, know how to read BAS statements, and price risk more accurately than non-conforming lenders. For a more detailed look at how to choose between these tiers, see the full low doc guide for the self-employed and the guide to how banks assess self-employed income.
How Much Can You Borrow on a Low Doc Loan?
Alt doc borrowing capacity is typically calculated at a haircut to your declared income — lenders apply a shading factor to account for the unverified nature of the income declaration. Most lenders assess at 80–90% of declared income.
Example: A sole trader declares $180,000 income via accountant letter. Lender assesses at 80% = $144,000 effective income. At a 6x multiplier (typical for 80% LVR), borrowing capacity ≈ $864,000. Compared to a PAYG earner on the same income, the alt doc borrower typically accesses 15–25% less borrowing capacity for the same declared figure.
Maximising your declared income
Work with both your accountant and your broker before applying. Your accountant optimises for tax minimisation — which is the right strategy most of the time, but can suppress declared income below what lenders would approve. For the year you plan to borrow, it is sometimes worth reducing deductions to show higher income. Your broker can tell you exactly what income figure you need to hit your target borrowing amount.
Find out how much you can borrow on an alt doc loan — and which lender gives you the best rate for your business structure
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The Full Checklist: What You Need to Apply
The exact document requirements vary by lender and income verification method, but for a standard specialist alt doc application via BAS + accountant letter, you typically need:
- ABN registration — minimum 2 years for most products (some accept 12 months)
- GST registration — required for BAS-based applications; must have been GST-registered for at least 12 months
- 6–12 months of BAS statements — lodged with the ATO (not draft)
- 12 months of business bank statements — primary transaction account showing regular income deposits
- Accountant's letter — on letterhead, signed, confirming income and ABN history (some lenders require CPA or CA only)
- Personal bank statements — 3–6 months to evidence living expenses and savings behaviour
- Evidence of deposit — savings history or asset statement (lenders want to see the deposit has been held, not a recent lump-sum gift)
- Property details — contract of sale or property description for pre-approval
Common Business Structures and How Lenders Treat Them
Sole trader
The simplest structure for lending. Your business income is your personal income. BAS shows business turnover; bank statements show net cash flow. Most alt doc lenders are comfortable with sole traders.
Company (Pty Ltd)
Lenders want to see your personal drawings from the company — not the company's profit. Director's salary plus dividends plus any shareholder loans drawn down. If the company retains significant profit, lenders may consider a portion of retained earnings, but this requires a full income assessment rather than alt doc treatment.
Trust structure
The most complex for lending. Trust distributions must flow to a named beneficiary (you), and lenders want to see that pattern of distribution consistently over 2+ years. Discretionary trusts where distributions vary year-to-year are harder to assess. A specialist lender experienced with trust structures — and a broker who knows how to present the application — is essential.
Partnership
Your share of partnership income. Lenders assess based on your percentage interest in the partnership, documented via the partnership agreement. Each partner's income is treated separately.
The Rate Premium and the Exit Strategy
Alt doc rates carry a premium over full doc rates — typically 0.3–0.8% at specialist lenders. On a $700,000 loan, 0.5% extra costs approximately $3,500/year. This is the cost of the alternative income verification pathway.
The standard strategy is to take the alt doc product now, then refinance to a full doc product once you have 2 years of completed tax returns that clearly document your income. At that point, you can access major bank rates and potentially save the full premium. The timeline: apply on alt doc now → 12–24 months later, full tax returns completed → refinance to standard product at competitive rate.
The self-employed home loan page has full details on the full doc pathway and what add-backs your accountant can include to maximise declared income at tax time. For a borrowing capacity estimate specific to your business, use the borrowing power calculator.
When a Low Doc Loan Is Not the Right Answer
Not every business owner needs a low doc loan — and taking one when you could qualify for full doc is a mistake (you pay a higher rate unnecessarily). Consider full doc first if:
- You have 2+ years of completed tax returns and your accountant has included all legitimate add-backs
- Your business runs through a trust but you have consistent distributions over 2 years
- You are a contractor with PAYG summaries (some contractors are assessed as PAYG by lenders)
- Your accountant can provide a letter of income that meets full doc standards
A good broker will assess both pathways and only recommend alt doc if full doc genuinely doesn't work for you — because the rate saving of staying on full doc is significant over the life of a loan.
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