Investor lending rarely fails on the interest rate. It fails on policy — a lender declines a property type, treats rental income differently than you assumed, or applies a different deposit requirement because the loan is for an investment rather than a home you will live in. This guide explains where those criteria are published, why they differ between lenders and between loan purposes, and how to confirm the details in writing before you commit to an application.
What investor lending criteria actually cover
When a lender assesses an investment home loan application, it is working through a set of internal credit policies rather than a single published rulebook. In practice these cluster into five areas:
- The borrower — income, existing debts, living expenses, employment type, credit history.
- The deposit or equity — how much of the property value you are funding yourself, and how that is measured.
- The security — the property itself, its type, location, size and whether the lender accepts it.
- The loan structure — repayment type, loan term, fixed versus variable, offset or redraw.
- The purpose — whether the loan is for an owner-occupied home or an investment property.
Purpose matters more than most first-time investors expect. The same borrower with the same deposit can get a materially different answer depending on whether the loan is classified as owner-occupier or investor, because lenders run separate policy settings for each.
Why the same borrower gets different answers from different lenders
There is no single national eligibility test for an investment home loan. Each lender sets its own credit policy, so differences typically show up in:
- how much of your rental income is counted, and whether any of it is discounted;
- how existing debts and other investment loans are assessed;
- deposit and equity requirements at different loan sizes;
- which property types, titles and locations are acceptable;
- documentation required for self-employed or complex income;
- how an interest-only period is treated, if one is offered at all.
Treat the list above as the set of questions to ask rather than a statement of what any particular lender does. Only the lender can tell you its current settings, and those settings change.
The one document that is standard across every lender
The most useful comparison tool is not a marketing page. Moneysmart, ASIC's consumer money site, states that the Key Fact Sheet is compulsory, and the layout is the same for every home loan across every lender.
That matters because it gives you an apples-to-apples document. Ask each lender for the Key Fact Sheet for the specific product you are considering and compare:
- the interest rate and the comparison rate;
- upfront and ongoing fees;
- the features included and which ones cost extra;
- what happens at the end of any fixed or interest-only period.
Because the layout is identical, differences you spot are real product differences rather than presentation differences.
Repayment structure and rate type
Moneysmart's home loan guidance notes that principal and interest will pay off the loan, and most people get this type of home loan. Where an interest-only period is relevant to your strategy, the availability, length and assessment treatment of that period are lender policy questions — ask directly and get the answer in writing.
Moneysmart also explains the difference between fixed and variable home loan rates, and warns that small differences in your mortgage interest rate can make a big difference to the long-term cost of your home loan. That is the practical reason to model more than one scenario rather than compare headline rates alone. Moneysmart provides a mortgage calculator to work out what your repayments would be — and what the total cost of your home loan would be — depending on the interest rate and the length of the loan. It also publishes guidance on how to check the average mortgage interest rate, which is useful for sense-checking whether a quoted rate sits near the market or well away from it.
Moneysmart's home loan material also covers Islamic finance in Australia, which is relevant if you need a home finance structure that avoids interest.
Where to verify each piece of information
| What you need to confirm | Where to check it | What to look for |
|---|---|---|
| Rate, fees, features, end-of-period terms | The lender's Key Fact Sheet (compulsory, standard layout) | Comparison rate, total fees, reverting rate |
| Deposit, rental income and property type rules | The lender's own product and credit policy information, plus written answers from the lender | Investor-specific settings, not owner-occupier settings |
| Repayment and rate type trade-offs | Moneysmart's choosing-a-home-loan guidance | Principal and interest vs interest-only, fixed vs variable |
| Repayment and total cost modelling | Moneysmart's mortgage calculator | Repayments across several rates and loan terms |
| Market-level context | ABS Lending Indicators, latest release | Commitments, investor loan sizes, refinancing activity |
What ABS data can and cannot tell you
The Australian Bureau of Statistics Lending Indicators release publishes, among other series, the number and value of new loan commitments for dwellings (seasonally adjusted and trend), average loan sizes for investor dwellings by state, and the number of refinanced loan commitments. A recent ABS release also reported that new home loans fell 5.4 per cent in the June quarter. The ABS also notes it can provide customised data to meet your requirements.
Read these figures as market context, not as eligibility rules or a rates source. They tell you how active investor and refinancing activity has been and what average investor loan sizes look like by state. They cannot tell you whether you will be approved, what rate you will be offered, or which lender will suit your circumstances. Always check the release date — the figures are a snapshot of a particular quarter, and the next release will supersede them.
Questions to put to a lender or broker, in writing
- Is this loan assessed under your investor policy or your owner-occupier policy, and what changes between them?
- What deposit or equity requirement applies at my loan size and property type?
- How is rental income treated in the assessment — is any portion excluded?
- Is an interest-only period available, for how long, and what happens when it ends?
- Are there property types, locations, titles or minimum sizes you will not accept?
- What documentation do you need for my income type?
- Can you send the Key Fact Sheet for this specific product?
Ask for answers in writing. A verbal indication that you "should be fine" is not a policy confirmation.
Next steps
- Write down your specifics: deposit, income type, existing debts, target property type, and whether you want principal and interest or an interest-only period.
- Request the Key Fact Sheet and written policy answers from each lender you are considering.
- Model repayments using Moneysmart's mortgage calculator at several interest rates and loan terms, remembering that small rate differences compound over the life of the loan.
- Read the latest ABS Lending Indicators release for market context, and note the quarter it covers.
- Compare lenders in one table using the same columns, then re-verify before applying, because policies and rates change.
If you want a structured shortlist of loan features to compare, see our home loan explainer at /money/home-loans/, or start with your own situation at /match/.
General information only
This article is general information about Australian home lending, not legal, tax, financial, credit or migration advice. It does not take account of your objectives, financial situation or needs, and it does not recommend or rank any lender or product. Lender policies, interest rates, fees and government guidance change over time; verify current details with the lender and with the official sources linked above before you act. Consider speaking with a licensed mortgage broker, a financial adviser or a tax professional about your circumstances.