This article is general information only — it is not personal financial advice, and a borrowing decision should be made with a licensed professional who has your full financial picture.
What pre-approval confirms, and what stays open
A pre-approval is a lender's conditional yes: your income, deposit and existing debts support a loan up to a stated amount, subject to conditions. It rests on verification rather than your own figures. APRA's residential lending guide expects a lender to assess and verify a borrower's income and expenses having regard to the borrower's particular circumstances.
What it does not do is lock the file. APRA expects a fresh serviceability assessment whenever the loan changes materially — moving from principal and interest to interest-only, extending an interest-only period, switching between fixed and floating rates, lengthening the term, or any change that increases total repayments over the life of the loan.
Two things sit outside the pre-approval itself. The first is the property: valuation is part of the file, and APRA notes a full on-site valuation is good practice while letting each lender document its own valuation policy. The second is time. An approval letter carries its own expiry date and conditions, and the material-change triggers above are what send the file back through assessment.
Income evidence: build the paper trail before you apply
Lenders start with income you have already declared, so what you submit needs to match your tax return.
For PAYG income, the base document is the payment summary issued by your employer, or the end-of-year income statement available through ATO online services. If neither exists, the fallback is original payslips showing income and tax withheld, plus other original documents that verify the employment information — a statutory declaration is one example the ATO accepts. Records generally have to be kept for five years from the date you lodge your return, which is also a fair measure of how far back a lender can reasonably look.
Business income takes more explaining, and the ATO's own rules show why:
- Salary, wages or directors' fees you draw from your own company are assessable income in your individual return.
- A sole trader's income is reported as business income on the individual return, no matter how much was transferred into a personal account.
- The company lodges a separate return that reports the business income and claims the salary as a deduction.
- Dividends, and any franking credits attached to them, are reported as assessable income.
- Trust distributions appear in the statement of distribution that forms part of the trust tax return.
- Money taken out of a company and not repaid — or not placed on complying loan terms — by the company lodgment day can be treated as a Division 7A deemed dividend.
That last point is where files break. If drawings from a company or trust do not match the income declared on the return, the lender has a question the paperwork cannot answer.
Expect less stable income to be discounted. APRA says a prudent lender builds buffers and adjustments into its serviceability model to reflect possible falls in income, particularly for less stable income sources. Casual shifts, commission and a short contracting history therefore tend to be assessed below the raw twelve-month total.
Deposit: genuine savings, gifts and the guarantee route
APRA's guide states that lenders typically require an initial deposit drawn primarily from the borrower's own funds, and that a minimum genuine savings requirement is an important means of reducing default risk.
Gifted money is not excluded, but it is scrutinised. Where a lender counts non-genuine savings such as a family gift, APRA says it would be prudent to take reasonable steps to establish whether the money has to be repaid — and, if it does, to include those repayments in the serviceability assessment. A gift letter stating the money does not need to be returned does real work in a file; a transfer with no explanation does not.
Statements carry the story. A lump sum that appears two weeks before application needs a visible origin: an asset sale, a term deposit maturing, a documented gift. Lenders reconstruct the deposit's history rather than accept a closing balance.
For buyers with a small deposit, the government guarantee is the route worth understanding. Under the first home loan deposit scheme APRA responded to, the government guarantees eligible mortgages for up to 15 per cent of the property purchase price. APRA allows those eligible loans to be treated comparably to a mortgage at 80 per cent loan-to-valuation ratio, risk-weighted at 35 per cent — a capital setting that shapes how willing a lender is to write the loan, not just what you can afford.
The guarantee is a deposit mechanism, not a budget one. Confirm which scheme the loan is actually being written under before you build a budget around it.
Serviceability: the buffer, the expense benchmark and debt-to-income
APRA expects lenders to assess new borrowers at an interest rate at least 3.0 percentage points above the loan product rate, an increase on the 2.5 percentage points its guide had previously referenced. That headroom is designed to absorb three pressures at once: higher mortgage rates, higher living costs and lower income.
Living expenses are verified rather than accepted. Lenders also compare your declared spending against their own benchmark, so a lean budget can still be assessed at a higher figure.
Debt-to-income is the other gate. APRA's information paper on activating debt-to-income limits (November 2025) sets out its preference for DTI limits over LVR caps, which APRA says disproportionately constrain lending to first home buyers, and notes that APRA is monitoring lenders to check the limit is working as intended. The practical consequence: strong income paired with a large existing debt load can be constrained by the debt-to-income measure even where the servicing calculation passes.
Card limits and car loans sit inside the same arithmetic. Reducing a limit you never use, and closing facilities you no longer need, changes the numbers before an application is lodged rather than after.
LVR, LMI and the costs Sydney adds
Lenders mortgage insurance protects the lender against loss on the loan. APRA expects a lender's board to consider how it uses LMI and the concentration risk that comes with it. Where a premium applies, it either eats into the cash you have left for other costs or gets added to the loan.
Below it, the deposit conversation changes shape: the question stops being how much you have saved and becomes how much of it survives settlement.
Sydney purchase costs come out of the same cash. Before setting a maximum price, write down three figures:
- Transfer duty for your price band.
- Any first home buyer concession you qualify for.
- The foreign purchaser surcharge, if it applies to you.
Rates and thresholds for those three come from state revenue settings and are not fixed in the material behind this article, so treat them as a line to fill in rather than a number to assume. For apartments, strata levies are a recurring cost that enters the living-expense side of servicing, which is why a unit and a house at the same price do not produce the same borrowing capacity.
What reopens a pre-approval before settlement
The triggers are specific. A new serviceability assessment is expected when the repayment basis changes, when an interest-only period is extended, when the loan moves between fixed and floating rates, when the term is lengthened, or when any change raises total repayments over the life of the loan. A pay cut, a move into self-employment, a new car loan or a credit limit increase can do the same job from the borrower's side.
Lender policy is not frozen either. APRA expects material serviceability policies to be reviewed at least annually and updated as the environment changes, so a rule that shaped your pre-approval can look different by settlement.
A short checklist before you apply:
- Income documents match the figures on your last return.
- Business or trust drawings are explained and consistent with declared income.
- Deposit statements show the origin of every significant lump sum.
- Declared expenses are tested against a realistic benchmark, not a best case.
- Existing debts and card limits are trimmed to what you actually need.
- Your cash covers duty and any LMI premium with something left over.
- You know the expiry date and every condition on the approval letter.
Questions Sydney buyers ask
What income documents does a lender need for pre-approval?
Payment summaries or end-of-year income statements first, then original payslips showing income and tax withheld if those are missing, plus documents such as a statutory declaration that verify the employment information. Self-employed applicants also need returns that explain company, trust or sole-trader income.
What counts as genuine savings, and how are gifts treated?
APRA's guide describes a deposit drawn primarily from the borrower's own funds, with a minimum genuine savings requirement treated as a way of reducing default risk. Gifts can be counted, but a prudent lender establishes whether the money must be repaid and, if so, includes those repayments in servicing.
What buffer and expense benchmark apply?
APRA expects assessment at least 3.0 percentage points above the loan product rate, up from the 2.5 percentage points previously referenced. Expenses are verified rather than accepted, and the benchmark they are measured against is set by each lender.
How much deposit do I need before pre-approval?
Guaranteed first home loans are treated as comparable to a mortgage at 80 per cent LVR for capital purposes, risk-weighted at 35 per cent.
How long does pre-approval last, and what forces a new assessment?
The approval letter sets its own expiry and conditions. A fresh serviceability assessment is expected when the repayment basis changes, an interest-only period is extended, the rate type switches, the term is lengthened, or total repayments rise.
Where the figures come from
Lending standards, the serviceability buffer and capital treatment come from APRA's Prudential Practice Guide APG 223 Residential Mortgage Lending, APRA's letter to authorised deposit-taking institutions on loan serviceability expectations, its information paper 'Activating debt-to-income limits as a macroprudential policy tool' (November 2025), and its response to submissions on the capital treatment of mortgages under the First Home Loan Deposit Scheme.