Last reviewed September 2026 by Megan Birot, Content Editor, OurTop10. Figures checked against the sources named in the article.Pre-approval is a lender telling you, in writing, roughly what it is prepared to lend you before you have found a property. It is the difference between guessing at your budget and knowing it.
It matters more in 2026 than it did two years ago. The cash rate is 4.35% as at 12 August 2026, and every rise has cut what buyers can borrow on the same income. A figure you were quoted in 2024 is not the figure you will get now.
What is mortgage pre-approval?
A lender looks at your income, your debts and your living costs, runs a credit check, and comes back with a maximum loan amount it would consider, subject to conditions. It is sometimes called conditional approval or approval in principle. The three names mean the same thing.
The conditions are the important part. Pre-approval is not a promise. It usually assumes your circumstances stay the same, and it always assumes the property you eventually pick stacks up on valuation.
The two kinds of pre-approval, and why only one counts
System-generated. You type your income and expenses into a website and it prints a figure. Nobody has looked at a document. Some lenders label these “pre-approvals” and they are worth about as much as a borrowing power calculator: useful for a rough ceiling and nothing more.
Fully assessed. A credit officer has read your payslips, your bank statements and your credit file and signed off on the amount. This one takes a few days to a couple of weeks depending on the lender, and it is the one that survives contact with an auction.
Ask the lender or broker which one you are getting. If the answer is vague, assume the first.
Pre-approval versus full approval
Pre-approval assesses you. Full approval assesses you and the property.
That distinction is where most surprises come from. You can hold a valid pre-approval and still be declined at full approval if the lender’s valuer comes back below the contract price, because the loan is measured against the valuation, not what you agreed to pay. In a market where values are falling, that gap opens more often than it used to — which is a reason to be careful about how much above a valuation you are prepared to bid, not a reason to skip pre-approval.
Do you actually need it?
You are not legally required to have it. In practice it does three things nothing else does: it tells you your real budget, it tells agents you are a serious buyer, and it removes the worst version of house hunting — falling for a place you cannot fund.
If you are bidding at auction, it stops being optional. An auction contract is unconditional. Without finance sorted, a winning bid is a very expensive way to find out what a bank thinks of you.
Mansour Soltani
Financial Services Expert
“We always recommend to our clients that they get pre-approval before looking at properties; one of the main reasons is that real estate agents won’t take your interest seriously when negotiating if you don’t have pre-approval.”
Mansour Soltani
Director | Soren Financial
Three things pre-approval actually gets you
A real number. Not a calculator estimate. A lender has looked at your payslips and your credit file and told you what it would lend. Every other decision follows from that number.
Standing with agents. Agents work the buyers who can complete. A pre-approved offer is treated differently from an identical offer without one, particularly when a vendor is weighing two similar bids.
Speed. Most of the assessment is already done. When you find the right place, you are supplying a contract rather than starting from scratch, which shortens the time between offer and formal approval.
Mae Chan Di Jones
Real Estate Agent
“Real estate agents tend to concentrate their efforts on the people prepared with pre-approval in principle. Our job is representing our clients and getting them the best result, so we focus on clients with pre-approval.”
Mae Chan, DiJones Real Estate.
How the pre-approval process works
Four steps, and most of the work sits in the first one.
- Get your paperwork together. Applications stall here, not at the lender.
- Pick a lender, or have a broker pick several. Lenders assess the same income differently, and the spread between the most and least generous is wide enough to change what you can buy. A broker is worth using here precisely because they know which lender treats your income shape best.
- Submit and wait. Usually a few business days. Longer if your income is complex.
- Read the conditions. Not just the number. The conditions tell you what could still go wrong.
One caution: every application leaves a mark on your credit file, and a run of them in a short period reads badly. Apply once, to the right lender, rather than shopping around by applying everywhere.
What sets your borrowing capacity
Lenders work out what you can repay if rates were higher than they are — typically around three percentage points above the actual rate. At a 4.35% cash rate that buffer bites hard, and it is why borrowing capacity has fallen faster than prices.
The things that move the number:
- Income, and how reliably you can evidence it. Salaried income is straightforward. Self-employed, contract, bonus and overtime income all get treated differently by different lenders.
- Existing debts. A credit card counts against you at its limit, not its balance. An unused $20,000 card can cost you real borrowing power.
- Living costs. Lenders compare what you declare against a benchmark and use the higher figure.
- Dependants. Each one reduces the assessed surplus.
- Deposit size. Under 20% usually means Lenders Mortgage Insurance, which adds to the loan.
If the number comes back lower than you hoped, our guide on increasing borrowing capacity covers what actually moves it — closing unused credit cards usually does more than anything else on the list.
Pre-approval readiness check
Tick what you have ready. The check tells you what a lender will ask for and what is likely to slow the approval down.
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What you need to supply
- Photo identification
- Recent payslips, or two years of tax returns and notices of assessment if you are self-employed
- Three to six months of bank statements
- Details of every debt: cards, car loans, personal loans, buy-now-pay-later, HECS
- Evidence of your deposit and how you saved it — lenders often want to see genuine savings rather than a recent lump sum
- A gift letter if part of the deposit came from family
Gaps in this list are the single most common reason an application takes three weeks instead of three days.
How long does pre-approval last?
Usually three months, sometimes six. It can normally be extended if nothing has changed, though the lender will want current payslips again.
What quietly invalidates it: changing jobs, taking on a new debt, a rate change that alters what the lender will offer, or the property valuing below what you agreed to pay. Tell your broker or lender before you do any of the first three, not after.
From pre-approval to a real loan
Once you have a signed contract, the lender orders a valuation and reassesses. If the valuation lands at or above the contract price and nothing about you has changed, formal approval usually follows within a week or two.
If the valuation comes in low, you have three options: make up the shortfall in cash, renegotiate the price, or walk if your contract lets you. Know which of those you could actually do before you sign anything.
Where pre-approvals fall over
The valuation comes in low. The lender lends against its valuer’s figure, not the price you agreed. Most common on off-the-plan purchases and in suburbs where prices have moved fast.
The property is outside policy. Small apartments, units above shops, properties on large rural blocks and homes in certain postcodes all have lenders that will not touch them. Ask before you bid.
Something changed. A new car loan, a drop to part-time hours, a missed repayment on an existing debt. The lender re-checks before formal approval, so once the documents are in, do not open a new card, change jobs, or move money between accounts in ways you cannot explain.
It expired. Ninety days passes faster than people expect when they are looking every weekend. Diary the date. If you are buying under the Australian Government 5% Deposit Scheme, the same 90-day clock applies once your place is reserved.
Private treaty or auction
At a private treaty sale you can make the offer subject to finance, which gives you a way out if the valuation disappoints. At auction there is no such condition: the fall of the hammer is binding, so your pre-approval, your building inspection and your deposit all have to be sorted before you raise your hand.
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FAQs About Mortgage Pre-Approval
A fully assessed pre-approval takes anywhere from two days to two weeks, depending on the lender’s queue and how complete your paperwork is. Broker-lodged files with every document attached on day one are the fast ones.
Usually 90 days. Some lenders allow up to six months. It can be renewed with fresh payslips and statements if you have not bought by then.
A formal pre-approval is recorded as a credit enquiry on your file. One enquiry is normal. Several in a short period, from applying to multiple lenders, can count against you. Apply once, with the right lender.
No. It is conditional on the property valuing up, on the property being within the lender’s policy, and on your circumstances staying the same. Most convert without drama, but the valuation is the step that catches people.
Yes. Under the Australian Government 5% Deposit Scheme the government guarantees part of the loan so you pay no lenders mortgage insurance, and participating lenders issue pre-approvals for it in the normal way. The property has to sit under the price cap for your area, which is $1.5 million in Sydney.
You have to. An auction purchase is unconditional, so there is no finance clause to fall back on. Bidding without an assessed pre-approval is bidding with money you may not have.