Home loan pre-approval: the complete process

Home loan pre-approval is a lender's written indication that, based on the information supplied so far, it is prepared to lend up to a stated amount, subject to conditions. It is also called conditional approval or approval in principle. It gives a buyer a working price limit and shows agents and sellers that finance has been considered.

Pre-approval is not a guarantee of finance. The lender has not yet assessed the property, and it may reassess the borrower before issuing formal approval. Understanding that gap is the most important part of using a pre-approval safely, particularly at auction.

What home loan pre-approval is and what it is not

A pre-approval generally confirms three things: the lender has reviewed the borrower's income, expenses, debts and credit history, it has calculated a maximum loan amount, and it has set out the conditions that must be met before the loan becomes final.

It does not confirm that:

• the lender will accept the specific property as security
• the lender's valuation will match the purchase price
• the interest rate or product terms are locked in
• the approval will survive a change in the borrower's circumstances or in the lender's policy.

The quality of pre-approvals also differs. Some lenders issue a system-generated indication based on figures the applicant typed in, with little or no document checking. Others complete a full credit assessment with verified documents. A fully assessed pre-approval is considerably more reliable, so it is worth asking the lender or broker which type has been issued.

The pre-approval process step by step

1. Estimate capacity. Use the borrowing power calculator and a household budget to set a realistic range before approaching a lender.
2. Check the deposit and costs. Confirm the funds available for the deposit, transfer duty and fees. The stamp duty calculator helps with the largest upfront cost.
3. Review the credit report. According to the Office of the Australian Information Commissioner (OAIC), a person is entitled to a free credit report every three months from a credit reporting body, and errors can be corrected.
4. Choose a lender or broker and apply. The application sets out income, living expenses, assets and liabilities.
5. Supply documents. The lender verifies the application against evidence.
6. Assessment. The lender checks the credit file and tests whether the repayments are affordable.
7. Pre-approval letter. The letter states the maximum amount, the expiry date and the conditions.
8. Property search, contract and formal approval. Once a property is found, the lender values it and completes the final assessment.

Documents lenders generally ask for

Requirements differ between lenders, but a typical checklist includes:

• photo identification for each applicant
• recent payslips and an employment contract or letter where employment is new
• for self-employed applicants, generally the two most recent tax returns and notices of assessment, and business financial statements
• statements for transaction and savings accounts showing the deposit and spending patterns
• statements for credit cards, personal loans, car loans, buy now pay later accounts and any student debt
• evidence of other income, such as rent, government payments or investment income
• a signed letter for any gifted funds
• a rental ledger, where rental history is being used to support the savings record.

Consistency matters. Lenders compare declared living expenses with what the statements show, and unexplained differences tend to delay the assessment or reduce the amount offered.

How lenders assess a pre-approval application

Australian credit licensees are subject to the responsible lending obligations in the National Consumer Credit Protection Act 2009, which ASIC explains in Regulatory Guide 209. In broad terms, a lender must make reasonable inquiries about a borrower's financial situation and objectives, take reasonable steps to verify that information, and not provide a loan that would be unsuitable.

In practice, lenders generally look at:

• Income: stability, type and how much of any overtime, bonus or casual income can be counted.
• Living expenses: the higher of declared expenses and the lender's benchmark for a similar household.
• Existing debts: credit cards are usually assessed on their limit, not the balance owing, so an unused card still reduces capacity.
• Deposit and loan-to-value ratio: the size and source of the deposit, a topic covered in more detail in the BorrowWise blog.
• Credit history: repayment conduct and the number of recent applications.

The serviceability buffer: an illustrative example

Banks do not test repayments at the actual interest rate alone. APRA stated on 28 May 2026 that its mortgage serviceability buffer remains at 3 percentage points, meaning banks assess whether a borrower could afford repayments at a rate at least that much higher than the loan rate. APRA also limits the share of new lending that banks can write at a debt-to-income ratio of six times or more.

Consider a hypothetical $600,000 loan over 30 years with principal and interest repayments, at a hypothetical rate of 6.00 per cent a year. This rate is used only to show the arithmetic and is not a current market rate.

Rate used	Illustrative monthly repayment
6.00% (hypothetical loan rate)	About $3,597
9.00% (loan rate plus 3 percentage point buffer)	About $4,828

In this example the lender tests the household budget against a repayment about $1,230 a month higher than the borrower would initially pay. This is a main reason a pre-approved amount can be lower than a buyer expects. The mortgage repayment calculator can be used to test repayments at different rates.

Conditional versus unconditional approval

Feature	Conditional approval (pre-approval)	Unconditional (formal) approval
Timing	Before a property is chosen	After a contract and a property valuation
Property assessed	No	Yes
Borrower checks	Initial assessment, sometimes not fully verified	Verified and confirmed as current
Can it be withdrawn	Yes, if conditions are not met or circumstances change	Generally only if information was incorrect or circumstances change materially before settlement
Safe basis for an unconditional contract	Not on its own	Yes, in most cases

Typical conditions in a pre-approval letter include a satisfactory valuation, an acceptable property type and location, no change in the borrower's financial position, confirmation of the deposit, and approval by the mortgage insurer where lenders mortgage insurance applies. The loan contract itself is issued only after formal approval.

How long pre-approval lasts and what happens when it expires

Lenders commonly set an expiry of around three months, and some allow up to six, but the period is a matter of each lender's policy and is stated in the letter. For buyers using the Australian Government 5% Deposit Scheme, the Government's First Home Buyers website states that buyers have 90 days from pre-approval under the scheme to find a home and sign a contract.

If the search takes longer, the lender can usually renew the pre-approval. It will generally ask for updated payslips and statements and may run a fresh credit check. The borrowing limit can change at renewal if interest rates, lender policy or the borrower's position have moved.

How pre-approval affects a credit file

A fully assessed pre-approval involves a credit check, and the OAIC explains that when a person applies for credit, the provider's request is recorded on the credit report as a credit enquiry. According to the OAIC, credit enquiries remain on a credit report for five years.

A single enquiry is a normal part of borrowing. The concern is several applications with different lenders in a short period, which a later lender may read as a sign of credit stress or of earlier declines. Borrowers may reduce this risk by comparing products first, using tools such as the home loan comparison page, and then applying to one lender at a time.

Pre-approval and buying at auction

Auctions leave no room to resolve finance afterwards. NSW Government guidance states that a successful bidder must sign the contract and pay a deposit, usually 10 per cent, on the spot, with no cooling-off period. Consumer Affairs Victoria notes that conditions such as finance cannot be added to an auction contract unless the seller agrees. Similar rules apply elsewhere in Australia.

A buyer relying on pre-approval at auction may therefore wish to:

• tell the lender or broker the property address beforehand and ask whether the property type, size and postcode are acceptable
• ask whether the lender will order a valuation before auction day
• set a bidding limit that allows for a valuation below the sale price, since any shortfall must be covered in cash
• confirm the deposit is available in cleared funds in the form the agent requires
• have a solicitor or conveyancer review the contract before bidding.

In a private treaty purchase, a buyer can usually ask for a "subject to finance" condition. Consumer Affairs Victoria advises that a buyer making an offer subject to finance should always nominate a lender in the relevant section of the contract. A loosely worded clause may not give the protection a buyer expects, so the wording should be settled with a legal representative before signing.

What can cause a pre-approval to fall over

• A low valuation. The loan-to-value ratio rises, and the buyer must contribute more or the loan is reduced.
• An unacceptable property. Very small apartments, some serviced or student apartments, properties in poor condition, or certain locations may fall outside lender policy.
• A change in employment. A new job, a probation period, reduced hours or a move to self-employment can each require reassessment.
• New debt. A car loan, a higher credit card limit or a new buy now pay later account reduces capacity.
• Undisclosed information. Liabilities or expenses found during verification that were not in the application.
• Interest rate or policy changes. A rate rise increases the assessment rate, and lenders can tighten policy without notice.
• Expiry. The approval lapses before a contract is signed.
• Mortgage insurer refusal. For high loan-to-value loans, the insurer may apply its own criteria.

The practical response is to keep finances stable from application to settlement: avoid new credit, keep savings patterns consistent, and tell the lender promptly about any change. Buyers who want an indication of their position before applying can request a free assessment, and the first home buyer hub explains the steps that follow approval. This article is general information only. A licensed credit adviser can confirm how a lender's policy applies to individual circumstances.