What Do Lenders Actually Look At When You Apply for a Home Loan?

You have a decent income, a clean record, and a deposit you have worked hard for. Then a lender tells you what you can borrow, and the number is well short of what you expected. It feels arbitrary. It is not. Behind the scenes, there is a fairly mechanical assessment running, and once you understand what it measures, the number stops being a mystery.

What do lenders assess on a home loan application?

Every lender is testing one thing: whether you can afford the repayments if conditions get worse than they are today. To answer that, they assess your income, your living expenses, your existing debts, your credit history, and the security of the property itself. None of these are judged in isolation. They feed a single serviceability calculation.

Your serviceability is a lender’s assessment of whether your income can cover the loan repayments plus your other commitments, with room to spare. Get any one input wrong on the application and the calculation moves, sometimes by tens of thousands of dollars in borrowing capacity.

How is your income assessed?

Not all income is counted at face value. Lenders apply different treatment depending on how reliable and repeatable the income is. Base salary from permanent employment is generally accepted in full. Variable income like overtime, commission, and bonuses is often “shaded”, meaning only a portion is counted, commonly 80%, though this varies between lenders.

Employment type does a lot of quiet work here:

This is where lender choice matters more than most people realise. Two lenders can look at identical payslips and arrive at materially different numbers, purely because their policy on casual tenure or bonus income differs. Treatment varies across our lender panel, so the right question is not “will I be approved” but “which lender’s policy fits my income”.

If you are self-employed or your income is partly variable, it is worth reading our guide on buying your first home alongside this one.

Why do lenders use a benchmark instead of your actual expenses?

Because people consistently underestimate what they spend. Lenders use the Household Expenditure Measure (HEM), a benchmark of minimum realistic living costs based on household size, income and location, drawn from Australian Bureau of Statistics household expenditure data. They then assess you on the higher of your declared expenses or the HEM figure.

That last part surprises people. Declaring unrealistically low living expenses does not increase your borrowing capacity, because the benchmark catches it. What it does do is raise questions when your bank statements tell a different story.

What counts as an expense is broader than most applicants expect. Alongside groceries, utilities, insurance, transport and childcare, lenders count:

1. Credit card limits, not balances. A card with a $15,000 limit and nothing owing is still assessed as a commitment, typically at around 3% to 3.8% of the limit per month. Cancelling unused cards before applying is one of the few genuinely quick wins available.
2. Buy now pay later accounts. These appear on bank statements and are treated as ongoing commitments. We have written before about how BNPL purchases can hurt home buyers.
3. HECS or HELP debt. Compulsory repayments reduce net income available for servicing.
4. Car and personal loans. Counted at the actual repayment, and the remaining term matters.
5. Dependants. Each child increases the assessed expense floor.

What interest rate are you actually assessed at?

Not the rate you are offered. APRA requires lenders to test your ability to repay at your actual rate plus a buffer of at least 3 percentage points, a setting APRA reaffirmed in June 2026. With the RBA cash rate at 4.35% and owner-occupier variable rates broadly in the low-to-mid 6% range, most applicants are being assessed near 9%.

That gap is the single biggest reason borrowing capacity feels tighter than your budget suggests. You may be comfortably able to afford repayments at 6%, and still be assessed as though you were paying close to 9%. It is a deliberate stress test, not a prediction.

You can model repayments at different rates using our loan repayment calculator to see how the buffer changes the picture.

What is the new debt-to-income limit?

From 1 February 2026, APRA requires banks and other authorised deposit-taking institutions to keep new lending at a debt-to-income (DTI) ratio of six times or higher to no more than 20% of their new mortgage lending. Your DTI is your total debt divided by your gross annual income. Borrow $600,000 on a $100,000 income, and your DTI is six.

Two things to understand about it.

It is a quota on lenders, not a ban on borrowers. A DTI above six does not disqualify you. It means the lender needs room inside its own 20% allocation, which is measured quarterly and applied separately to owner-occupier and investor lending. Some lenders will have room. Others will not, and their appetite shifts through the quarter.

It does not affect most applicants. At the time APRA announced the limit, loans at a DTI of six or more made up roughly 5.5% of new lending, well under the cap, compared with more than 24% in late 2021. Bridging loans for owner-occupiers and loans to buy or build new dwellings are exempt, and non-bank lenders sit outside the limit entirely.

The Mortgage & Finance Association of Australia read the move as forward-looking rather than a response to any deterioration in standards. MFAA CEO Anja Pannek described it as “deliberately pre-emptive rather than reactive”.

For borrowers at the higher end of the DTI range, this makes lender selection a timing question as well as a policy question.

What does your credit file show a lender?

More than a score. Under comprehensive credit reporting, your file shows your open accounts, credit limits, and a month-by-month repayment history for the past two years. A lender can see whether you paid your phone bill late in March of last year.

Applications themselves leave a mark. Every credit enquiry is recorded, so shopping around by applying to several lenders directly can work against you, because a cluster of enquiries reads as either urgency or repeated rejection. A broker submits to one lender chosen on policy fit, which is part of the reason the approach differs from applying to banks one at a time.

If you want to understand what is on your file before you apply, start with our guide to knowing your credit score.

How does a broker change the outcome?

By matching your circumstances to the lender whose policy suits them, before anything is submitted. The assessment itself is not negotiable. What is variable is which lender’s version of it you are put through, and how clearly your position is presented.

In practice that means:

1. We work through your income, expenses and existing commitments properly, so nothing surprises the lender later.
2. We identify which lenders’ policies suit your employment type, income mix, and DTI position.
3. We tidy up the avoidable problems first, such as unused credit card limits or a BNPL account you no longer use.
4. We structure and submit the application to the lender most likely to fit, with the supporting evidence assembled up front.
5. We manage it through to settlement and keep you updated.

Nothing here guarantees an approval, and no broker can promise one. What it does is stop good applications being knocked back for reasons that had nothing to do with whether you could afford the loan. More on why borrowers use a broker.

The most useful thing you can do before house hunting is get pre-approval, because it tells you where you actually stand rather than where you assume you do. Book a free chat and we will run through your position.