According to the Reserve Bank of Australia, the size of a borrower's deposit relative to the property's value is one of the most significant factors a lender considers when assessing a home loan application — and for first-home buyers with limited savings history, that assessment is far more detailed than most expect. Three interlocking concepts govern almost every first-home buyer approval in Australia: loan-to-value ratio (LVR), lenders mortgage insurance (LMI), and the genuine savings requirement. Understanding how each one works — and how they interact — is the difference between a smooth approval and a months-long delay.
What LVR Actually Means for Your Borrowing Power
Loan-to-value ratio, or LVR, is the proportion of a property's purchase price that you are borrowing expressed as a percentage. If a property is valued at $700,000 and you borrow $560,000, your LVR is 80%. Lenders use LVR as a primary risk gauge: the higher your LVR, the less equity you hold in the property, and the greater the lender's exposure if you default and the property needs to be sold. Most Australian lenders set 80% as a key threshold — below it, applications are processed under standard terms; above it, additional requirements kick in immediately.
For additional market context, see REAStats Australian property market intelligence.
The reason 80% carries such weight is rooted in how lenders model worst-case scenarios. Property values can fall, particularly in the early years of a loan, and a lender who has financed 90% or 95% of a purchase faces a real risk of a shortfall if they must sell after a borrower defaults. APRA's prudential standards reinforce this caution by requiring authorised deposit-taking institutions to apply conservative risk weights to high-LVR loans, which increases a bank's capital requirements and acts as a structural incentive to price those loans more carefully. For borrowers, this translates into higher interest rates on high-LVR products and, critically, the compulsory purchase of lenders mortgage insurance.
For first-home buyers, the practical implication is direct: the closer your deposit is to 20% of the purchase price, the wider the range of lenders and products available to you. A buyer with an 85% LVR is not simply paying for LMI — they may also face a higher interest rate margin, stricter serviceability testing, and fewer lender choices. Building even a few extra percentage points of deposit before applying can meaningfully change the economics of the loan over its full term.
LVR also affects refinancing options years down the track. Buyers who purchase at a high LVR and then experience a period of flat or falling prices may find themselves in negative equity — owing more than the property is worth — which can lock them out of switching lenders or accessing better rates. Starting with the lowest possible LVR provides a buffer against that risk from day one.
Lenders Mortgage Insurance: Who It Protects and What It Costs
Lenders mortgage insurance is a premium charged to borrowers whose LVR exceeds 80%, and it is one of the most widely misunderstood costs in Australian property finance. Despite the borrower paying the premium, LMI protects the lender — not the buyer. If a borrower defaults and the property sells for less than the outstanding loan balance, the LMI insurer (typically a specialist firm such as Genworth or QBE) reimburses the lender for the shortfall. The insurer then has the right to pursue the borrower for that amount. LMI provides no direct benefit to the person paying it.
The premium is not a flat fee. It scales with two variables: the LVR and the total loan amount. A borrower at 85% LVR pays a lower premium than one at 95% LVR on the same purchase price, and a higher loan amount generates a larger absolute premium even at the same LVR percentage. LMI premiums can be paid upfront or, more commonly, capitalised into the loan — meaning they are added to the outstanding balance and attract interest over the life of the loan. This capitalisation effect means the true cost of LMI, when interest is factored in, is substantially higher than the headline premium figure suggests.
First-home buyers have several ways to reduce or avoid LMI. The federal government's Home Guarantee Scheme allows eligible buyers to purchase with a deposit as low as 5% without paying LMI, with the government guaranteeing the difference between the deposit and 20%. Some state governments offer complementary schemes. A family guarantee arrangement — where a parent uses equity in their own property as additional security — can also bring the effective LVR below 80% without the buyer needing a larger cash deposit. Each of these options carries its own conditions and risks that buyers should review carefully. For a full breakdown of the LMI alternative routes, the APF First Home Buyer Complete Guide covers each scheme in detail.
It is also worth understanding that LMI is not portable. If you refinance to a different lender before your LVR has fallen below 80%, you will generally pay a new LMI premium with the new lender. This traps some borrowers with their original lender longer than they would otherwise choose to stay, limiting their ability to pursue better rates in a competitive market.
The Genuine Savings Rule: Why Not All Deposits Are Equal
Even if a first-home buyer has assembled a sufficient deposit to meet the LVR threshold, lenders apply a further filter: the genuine savings test. This rule requires that a meaningful portion of the deposit — typically representing at least 5% of the purchase price — has been accumulated by the borrower through their own regular savings over a defined period, commonly three to six months. The requirement exists because lenders want evidence of financial discipline, not just a lump sum that appeared suddenly in a bank account.
What counts as genuine savings varies by lender, but the category generally includes regular salary deposits into a savings account, term deposit balances held for the required period, shares or managed funds held for the same timeframe, and additional repayments on an existing loan. What typically does not count as genuine savings includes gifts from
This article was produced with AI assistance and reviewed for accuracy. Content is for informational purposes only and does not constitute financial or property investment advice.
