Some lenders offer low documentation loans that let self employed borrowers verify income using business activity statements, often covering a recent period, instead of full tax returns. These loans generally require a larger deposit and may carry a higher rate, and are offered mainly by non bank and specialist lenders. Availability and conditions vary by lender, so it is worth checking your options.
Written by Ross McFarlane, Licensed Mortgage Broker (Credit Representative 526725). About the authorIf your tax returns are not ready, or do not reflect your real cash flow once the business is humming, business activity statements can be a useful alternative way to evidence income. Some lenders build low documentation loans around exactly this. Here is how that works and what to weigh up.
A business activity statement, or BAS, is the regular statement many businesses lodge for GST and related obligations. Some lenders offer low documentation loans that accept a recent period of BAS lodgements as evidence of business turnover and income, instead of requiring full personal and business tax returns.
This can suit self employed borrowers whose tax returns are not yet lodged, whose most recent returns understate current trading, or whose business has grown since the last return. Because the BAS reflects recent activity, it can present a more current picture of the business than older returns.
Using BAS rather than full returns generally falls under low documentation lending, which carries its own features. Lenders offering it typically require a larger deposit, meaning a lower loan to value ratio, and may charge a higher interest rate to reflect the reduced documentation. The exact settings vary by lender.
BAS backed and other alternative documentation loans are offered mainly by non bank and specialist lenders, though some mainstream lenders have options. The suitable lenders are not always the household names, and their policies differ, which is part of why guidance helps here.
A low doc loan is not a no questions asked loan. Responsible lending obligations still apply, so the lender must be satisfied you can afford the repayments. They are simply verifying the income through different documents, and they may ask for additional support such as bank statements or an accountant declaration.
If your full tax returns are available and present your income well, a standard full documentation loan often gives a better rate and a lower deposit requirement than a BAS backed low doc loan. So it is worth checking the full doc path first, with BAS as the alternative when that path is not open.
Because availability and conditions vary so much between lenders and can change, the useful step is to find the lenders whose current policy fits your situation. A broker who works with self employed borrowers can identify suitable BAS backed options, usually at no cost to you. This is general information, not advice, and your accountant should confirm how your income is presented.
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Some lenders offer low documentation loans that accept a recent period of business activity statements as evidence of income, instead of full tax returns. Availability and conditions vary by lender.
They can. As low documentation loans they generally require a larger deposit and may carry a higher rate than a full documentation loan, reflecting the reduced documentation. The settings vary by lender.
Often yes. If your full tax returns present your income well, a full documentation loan usually offers a better rate and lower deposit requirement than a BAS backed low doc loan, so it is worth checking that path first.
Last reviewed: June 2026
General information only. This page provides general information about home loans and is not financial or credit advice, a quote, or a guarantee, and your personal circumstances have not been considered. Lending policies, interest rates, fees and eligibility vary by lender and change over time. Always confirm your own situation with a licensed mortgage broker or lender before acting. Ross McFarlane (Credit Representative 526725) is an authorised Credit Representative of Australian Associated Advisers Pty Ltd t/a Keylend, Australian Credit Licence 392169.