7 Lender Policy Realities Australian Property Investors Need to Understand · 2026

On 1 February 2026, APRA’s macroprudential debt-to-income limit took effect. The cap allows up to 20% of a lender’s new mortgage lending to be at a DTI at or above 6x, applied separately to the owner-occupier and investor portfolios, and measured on a quarterly basis. APRA regulates banks, credit unions and building societies under this limit.

The cap is more relevant to investor lending than owner-occupier lending. According to APRA, approximately 10% of new investor mortgages currently sit above 6x DTI, compared to around 4% of owner-occupier mortgages. Investors typically borrow at higher DTI ratios because rental income is shaded for serviceability and existing debts compound.

At an aggregate level, APRA has noted that the cap is not currently binding... most lenders are well below the 20% threshold. Investment lending at the median sits at approximately 5.5x DTI. The cap becomes constraining only if individual lenders’ high-DTI proportions approach 20%. The practical effect for investors is that lenders may begin to manage internal DTI policy more actively to stay within the cap, particularly for investor borrowers near or above the 6x threshold.

APRA’s prudential practice guide APG 223 sets out that lenders are expected to assess interest-only loans on the basis of principal-and-interest repayments over the term during which P&I applies (i.e., excluding the IO period itself).

APG 223 expressly states that lenders should undertake a new serviceability assessment whenever there are material changes to a loan, including a change of repayment basis or the extension of an existing interest-only period. This means an IO extension may be treated as a credit event by most lenders, not an administrative renewal.

When a borrower’s existing IO period reaches its end and they request an extension, the lender may re-assess current income, current expenses, current debts and the current serviceability buffer. The result may differ from the original assessment, particularly if the borrower’s circumstances have changed or if assessment rates have moved.

In October 2021, APRA increased the minimum interest rate buffer it expects banks to use when assessing serviceability of home loan applications, from 2.5 to 3.0 percentage points above the loan product rate. The buffer applies to new applications and refinances.

For a borrower at a market rate of 6.5%, the assessment rate is 9.5%. At 7.0%, the assessment rate is 10.0%. The serviceability calculation uses this buffered rate, not the actual repayment rate, to determine borrowing capacity.

The combined effect of higher market rates and the 3% buffer is that calculated borrowing capacity in 2026 is materially lower than it was during the lower-rate environment of 2020-2022, even for an identical borrower profile and identical income. Some lenders apply the buffer slightly differently (for example, applying a higher floor rate where the market rate is very low), but the 3% minimum is consistent across APRA-regulated lenders.

When assessing investor loan applications, Australian lenders typically apply a haircut to gross rental income to recognise vacancy risk, maintenance costs and property management fees. The shading rate is generally between 70% and 80% of gross rent, depending on the lender and the property type.

For a portfolio generating $180,000 in annual gross rent, the shaded amount used in serviceability may sit between $126,000 (at 70% shading) and $144,000 (at 80% shading) depending on the lender. The 10-percentage-point spread between lenders translates into meaningful borrowing capacity differences for portfolio investors.

Lender variations within this range are common. Some lenders apply a uniform shading rate across the portfolio. Some vary by property type. Some treat rental income from a signed lease differently from estimated rental yield on a recently purchased property. The specific treatment is set by each lender’s credit policy and may change over time.

HEM is published by the Melbourne Institute, based on Australian Bureau of Statistics Household Expenditure Survey data. It uses median spending for basic categories and the 25th percentile for discretionary spending. Lenders apply HEM as a minimum living-expense floor against which the borrower’s declared expenses are compared, generally using the higher of the two in the serviceability calculation.

HEM is scaled by household size, dependents, marital status and property location. It is adjusted quarterly for inflation, so the dollar threshold in 2026 is materially higher than it was in 2022.

The HEM tables themselves are licensed commercially to lenders and are not publicly available. Different lenders may apply HEM differently within those tables, leading to variance in assessment outcomes between lenders for the same applicant. The variance is rarely the headline number a borrower notices, but it can move borrowing capacity by a meaningful amount.

Australian lenders writing loans for borrowers earning in foreign currencies apply a haircut to recognise exchange rate volatility risk. The haircut is currency-specific. Hard currencies (United States dollar, British pound, euro, Singapore dollar, Hong Kong dollar, UAE dirham) are generally treated more favourably, with smaller haircuts applied. Emerging market currencies typically see larger haircuts.

The lender pool willing to write Australian property loans against foreign income is genuinely narrow. Specialist expat-mortgage references estimate the active pool at around six to eight Australian lenders, with policies, pricing and currency lists that vary materially between them.

Specific haircut percentages are set by each lender’s credit policy and may change in response to currency volatility or risk appetite. Borrowers planning purchases should confirm current haircut policy at their target lender close to application time, not at the start of a long buying window.

Most major Australian lenders accept discretionary family trusts as borrowers, with trustee personal guarantees and adult-beneficiary guarantees as the standard requirement. The discretionary family trust is the most commonly accepted trust structure for residential investment lending.

Hybrid trusts (which combine discretionary and fixed elements) and unit trusts have a smaller lender pool. Some lenders require trust deed review, additional structuring evidence, or apply pricing premiums. Acceptance criteria vary by lender and may also vary based on the specific terms of the trust deed.

SMSF property lending uses a separate Limited Recourse Borrowing Arrangement structure. The lender pool for SMSF loans is narrower again, and individual lenders set their own minimum fund size, member age, and property type criteria.

The structural decision (which trust type, what entity, what guarantees) sits with the borrower’s accountant or financial planner. The lender selection sits with the broker. Both decisions should be made in coordination, ideally before the structure is finalised.