Buying a home in Australia often begins with a simple yet powerful promise from a lender called an Approval in Principle. Also known as AIP, it is a conditional green light that signals you are likely to receive a home loan up to a specific amount once you find the right property. Because an AIP involves credit checks and a lender assessment, it carries more weight than a rough borrowing calculator yet it still allows you to shop with confidence before the lender performs a final valuation and full verification. In this guide you will discover exactly how an AIP works, how it differs from other approvals, how long it lasts, the advantages and risks, and the steps you need to follow to secure one in today’s Australian market.
Approval in Principle vs Pre Approval vs Formal Approval
Many Australian borrowers use the terms pre approval and approval in principle interchangeably. While most banks treat them as the same conditional offer, some lenders draw a subtle distinction. A true approval in principle generally follows a deeper credit assessment than a quick pre qualification and it often remains valid for up to three or four months. Formal approval, sometimes called unconditional approval, arrives only after the lender has valued the property, checked legal titles and satisfied any outstanding conditions.
Below is a side by side summary that shows how each stage compares.
| Feature | Pre Qualification | Approval in Principle | Formal Approval |
|---|---|---|---|
| Assessment depth | Basic income estimate based on your input | Full credit check plus document review | All AIP checks plus property valuation and contract assessment |
| Validity period | Non binding and instant | Usually 90 to 120 days | Linked to property settlement date |
| Guarantee level | None | Conditional on property and unchanged finances | Binding offer subject only to settlement conditions |
| Typical cost | Free | Usually free | May incur valuation or legal fees |
| Best use | Early research | Making offers and bidding at auction | Exchanging contracts and finalising settlement |
In practice, many major banks such as Westpac, NAB and ANZ issue a single document labelled pre approval or conditional approval that functions as an AIP. Always read the fine print and ask whether the lender has run a full credit check because that determines how reliable the figure will be when you attend an auction.
How to Get an AIP Step by Step
Securing an AIP involves more than filling out a quick online form. Lenders must comply with the National Consumer Credit Protection Act, know your customer rules and responsible lending guidelines issued by ASIC and APRA. That means they need a detailed picture of your income, expenses, debts and deposit. The typical process unfolds as follows.
You complete an application either through a mortgage broker or directly with a bank. The form captures your personal details, employment, income, existing commitments and desired loan amount.
You supply supporting documents that include identification, payslips, group certificates, bank statements, credit card statements and evidence of your deposit. Self employed applicants add two years of tax returns and profit and loss statements.
The lender orders a credit report from Equifax or Illion and enters your numbers into their serviceability calculator. This tool stress tests your repayments at a higher interest rate, currently about three per cent above the actual rate as required by APRA.
If the numbers stack up the lender issues a letter confirming an approval in principle up to a stated amount. The letter lists conditions such as acceptable security type, satisfactory valuation, no material change to your financial position and completion within the validity period.
With this document in hand you can make offers with confidence, knowing the lender has already vetted your finances.
Documents Needed
Lenders rarely deviate from a core set of documents because regulator guidelines demand clear verification. You will usually provide recent photo identification, your last two to three payslips, year to date payment summaries, three months of transaction account statements and evidence of your deposit through savings or gift declarations. If you receive rental income, dividends or government benefits, provide statements or letters that confirm the amounts and frequency.
What Lenders Assess
Assessment hinges on three pillars. Income tells the lender how much cash flows in each month. They consider gross salary, bonuses, overtime and any secondary income such as rent. Expenses reveal your outgoings on living costs, utilities, child care and lifestyle. The lender cross checks declared expenses against bank statements and applies household expenditure benchmarks published by the ABS. Credit history uncovers past defaults, late payments or high unsecured debt that may raise risk flags. A clean credit file combined with solid savings habits places you in a stronger position and may even unlock rate discounts.
How Long an AIP Remains Valid
Most Australian lenders set an expiry of ninety to one hundred and twenty days. The window aligns with typical home search periods and ensures the credit decision remains relevant in a changing economic landscape. Rising interest rates or altered regulatory buffers can quickly erode previously acceptable borrowing limits. If your AIP lapses before you secure a property, you can request an extension, though you may need to re supply updated payslips or statements.
During the validity period avoid major financial changes. Switching jobs, taking on new car finance or missing a credit card payment can prompt the lender to withdraw or revise the approval. Keeping your financial picture stable preserves the power of your AIP when you finally sign a contract.
Pros, Cons and Risks of AIP
An approval in principle offers significant advantages. It clarifies your budget so you can target suitable suburbs and avoid overextending. Real estate agents will treat your offer more seriously, especially at auctions where quick settlement is valued. You gain negotiating leverage because sellers prefer buyers with finance largely sorted. Some insurance companies even discount lender’s mortgage insurance premiums when an AIP precedes formal approval.
However, an AIP does not guarantee funds. The lender can still decline the final application if the property valuation falls short, if your financial situation changes or if credit policy tightens. An AIP involves a credit enquiry which may leave a footprint on your file, though one enquiry rarely impacts scores materially. Another risk arises if you rely on the maximum approved amount without allowing for rate rises or future expenses. Always leave a buffer to prevent stress should repayments increase.
AIP for First Home Buyers in Australia
First timers often feel overwhelmed by grant rules, stamp duty concessions and lender jargon. An AIP acts as a safety net by removing uncertainty around borrowing capacity. In New South Wales, for example, the First Home Buyer Assistance Scheme provides stamp duty exemptions on homes up to eight hundred thousand dollars. Knowing your AIP ceiling lets you determine whether you can stay within the exemption threshold and save tens of thousands at settlement.
Many state revenue offices require signed contracts before grants are paid, but lenders require proof of grant eligibility when processing formal approval. Having an AIP already issued reduces turnaround time so you can meet tight cooling off or finance clauses.
Brokers recommend that first home buyers gather a larger deposit than the bare minimum. While several lenders accept five per cent genuine savings, a ten or twenty per cent deposit often results in lower premiums for lender’s mortgage insurance and more competitive interest rates. Your AIP letter will outline the assumed deposit percentage, so confirm that alignment before you commit to a property.
Frequently Asked Questions
Is an AIP a guarantee of a home loan
No. An AIP signals that you meet policy based on the information and credit checks completed to date. Final approval depends on a satisfactory property valuation, continued employment and no adverse credit events before settlement.
Does an AIP affect my credit score
The lender performs a hard enquiry, which becomes visible on your credit report. One or two enquiries within a short window typically have minimal impact, especially if you proceed to take the loan. Multiple enquiries across different lenders can reduce your score, so consider using a mortgage broker who can pre screen your eligibility before lodging applications.
How long does an AIP take to obtain
Digital lenders sometimes issue a conditional letter within an hour if your income matches electronic payroll databases. Traditional banks may require manual verification which can take two to five business days. Providing complete and accurate documents upfront is the best way to speed up the decision.
Can I get an AIP without payslips
If you are self employed or earn irregular income, you can submit tax returns and business financials instead of payslips. Some lenders offer low doc options that rely on accountant letters and business account statements, though these usually involve higher interest rates or lower loan to value ratios.
Can an AIP expire
Yes. Most expire after ninety to one hundred and twenty days. You can refresh the approval by supplying updated documents, assuming your financial position has not deteriorated.
Is AIP available for refinancing
You can obtain an approval in principle when refinancing, although lenders often use the term conditional approval. The process mirrors a purchase application but substitutes your current property as security, and the lender will still order a valuation.
Next Steps After Receiving an AIP
Armed with your approval in principle, you can confidently search for homes within your price bracket. Real estate portals allow filtering by maximum price so use the approved figure as your ceiling. When you find a property, notify your broker or bank immediately. They will order a valuation and commence formal approval.
Review the contract of sale with your solicitor or conveyancer before paying a deposit. Many buyers negotiate a finance clause that allows sufficient time, often fourteen days, to transition from AIP to unconditional approval. At auction, no clause exists, so bid only if your AIP covers the expected purchase price and you have funds for stamp duty and legal costs.
Maintain financial discipline through settlement. Avoid new credit cards, refrain from large purchases and keep savings untouched except for the deposit. Once formal approval lands, your lender will send loan documents that outline interest rate, repayments and settlement date. Sign promptly, return originals and liaise with your conveyancer to book settlement.
After settlement, store your AIP letter, approval documents and statements in a secure place. They create a paper trail that proves responsible borrowing and can support future applications such as personal loans or investment property loans.
An approval in principle is more than a piece of paper. It is a strategic tool that empowers you to act decisively in a competitive market, negotiate with authority and secure the Australian home you have imagined. By understanding its scope, limitations and renewal requirements, you position yourself for a smoother path from property search to settled homeowner.

