On 27 November 2025, APRA pulled a policy lever it had loaded — but never fired — back in 2022. From 1 February 2026, every Australian bank can write no more than 20% of its new mortgages at a debt-to-income (DTI) ratio of six times income or higher. The cap applies separately to owner-occupier and investor lending, and it is measured every quarter.
If you earn $250,000 a year, already own one or two investment properties, and were quietly planning to add a third, this is the rule you actually need to understand — not the one most explainer pages have described.
Here’s the part most coverage has missed: the cap is not aimed at *you*. It’s aimed at the bank. And that distinction changes how you plan the next twelve months.
What APRA actually announced
The mechanics, in plain terms, sit in APRA’s 27 November 2025 information paper and the accompanying letter to all authorised deposit-taking institutions (ADIs).
From 1 February 2026, each ADI is allowed to write no more than 20% of its new investor lending at a DTI of 6 times income or higher, and the same separate 20% cap on its new owner-occupier lending. Bridging loans for owner-occupiers and finance for the construction or purchase of newly built dwellings are exempt. The mortgage serviceability buffer — the +3 percentage point assessment on top of the loan rate — stays unchanged. So does the 1% counter-cyclical capital buffer.
APRA Chair John Lonsdale framed the move as pre-emptive rather than reactive. In APRA’s words, “at an aggregate level the limit is not currently binding, so it is not expected to have a near-term impact on borrowers’ access to credit.” Across all ADIs, the share of new investor lending at high DTI rose from 8% to around 10% in the year to the September 2025 quarter — well below the new 20% cap.
So why move at all? Because investor-driven high-DTI borrowing was the line on the chart that was bending up, in a cycle of falling rates and rising prices. APRA acted now to stop a build-up later. The same letter explicitly flagged that *investor-specific* limits are still on the table if “macro-financial risks significantly rise or lending standards deteriorate.”
Why “DTI six” matters more for investors than owner-occupiers
DTI is total debt against gross household income. If your household earns $300,000 and you carry $1.8 million in property debt across an owner-occupier mortgage and an investment loan, your DTI is 6. One more $700,000 investment purchase pushes the household to roughly DTI 8.3.
Owner-occupiers usually buy one home, hold one mortgage, and sit comfortably below DTI 6. Investors are different. A second or third property layers debt without proportionately layering income — rental income gets shaded by lenders (typically 70–80%, depending on the loan type), and serviceability is assessed at the buffered rate, not the contract rate. The maths concentrates investors in the high-DTI bracket. APRA knows this. That’s why the cap will, in Lonsdale’s own words, “have greater impact on investors.”
For someone earning $200,000–$400,000, building a property portfolio funded mostly by leverage, the average DTI on a third or fourth purchase often sits in the 5.5–7.5 zone. Whether your application falls just inside or just outside the cap depends on which lender you go to, when you apply, and how the file is structured.
What no one else is saying — the cap is bank-by-bank, not borrower-by-borrower
| Read this first.
Read this section first, even if you skim the rest. It’s where the real planning lives. |
The 20% cap doesn’t sit at the system level. It sits at the level of every individual ADI, measured quarterly. Translation: each bank has its own DTI≥6 bucket of “permitted” lending. Once a bank fills its bucket for the quarter, the next high-DTI investor application doesn’t get a polite “you exceeded our risk appetite.” It gets a “we can’t write this loan right now.”
That changes the planning conversation completely. You’re not really managing your DTI ratio in isolation. You’re managing the *queue* — the order in which you approach lenders, the timing of the quarter, and the structure of the application itself.
Three practical implications:
A bank that ran near its bucket last quarter will tighten policy quietly this quarter. You won’t see a press release. You’ll see lower rental shading, stricter HEM, sharper “explain this expense” requests, and slower turnaround on borderline files. Some lenders have already started doing this in March and April 2026. Brokers see it before it shows up in the official data.
A bank that ran well below its bucket has room — and an incentive — to write your DTI 6.2 deal at a sharper rate to win it. The cap isn’t a uniform tightening; it’s a redistribution. The investor who shops one lender will get the average treatment. The investor whose broker knows where the room is gets the better outcome.
Timing within the quarter matters. The reporting period is quarterly. By month three of any quarter, banks running close to the cap will throttle. Early in a new quarter, the bucket resets. For a high-DTI investor structuring a deal, the difference between submitting on 28 March and 8 April is real.
This is the planning point that most blogs about the new DTI rule miss entirely. The cap isn’t a number you have to stay under. It’s a system you have to navigate.
Who actually feels the cap — and who doesn’t
If you’re an owner-occupier buying your first home with a 20% deposit, your DTI almost certainly sits well below 6. The new rule changes nothing for you in 2026.
If you’re a high-income professional with one investment property and you’re planning a second using existing equity, you’re likely still inside the cap at most lenders, depending on how rental income gets shaded.
If you have two or more existing investment properties and you’re trying to add another by leveraging combined equity and household income, you’re the textbook cap-affected borrower. You’ll feel which lenders have room and which don’t. The shape of your file will matter more than it has at any time since the 2017 investor-loan tightening.
If you’re buying brand-new construction or a newly built dwelling, you sit in the exempt category — the cap doesn’t apply to that finance. This is one of the few clean strategic levers in the whole package.
If you’re a self-employed borrower with complex income (distributions, retained profits, trust structures), the issue is rarely DTI itself — it’s how the lender chooses to count your income. A well-structured income picture can put you on the right side of the line at one lender and the wrong side at another. The income presentation is the lever, not the DTI calculation.
The five levers that actually move the number
The blogs telling you to “increase your income or reduce your debt” are not wrong, but they are useless. Anyone running a $3M+ portfolio plan needs sharper levers than that.
- Lender selection by current bucket usage. Different ADIs run their high-DTI bucket at different fill rates. Your broker’s job in 2026 is to know, at the time of submission, which lenders are sitting at 8% utilisation versus 17%. That’s a live dataset, not a generic “use the big four” instinct.
- Loan structure to reduce assessed debt without reducing actual debt. Splitting a portfolio between principal-and-interest and interest-only, or restructuring an existing loan from a 30-year remaining term back to 30 years on refinance, changes the assessed monthly commitment that flows into DTI. Same debt, different number.
- Rental income presentation. Lenders shade rental income at different rates — often between 60% and 80% depending on whether the property is short-term, medium-term, or standard residential. Two lenders looking at the same investment portfolio will produce different DTI outcomes purely from how they treat the income side of the equation.
- New-dwelling exemption as a portfolio play. Off-the-plan and new-construction finance is exempt from the cap. For a high-income investor mid-portfolio-build, the next purchase being a new dwelling can sit completely outside the bucket — and that decision is worth having with your buyers’ agent and accountant before you go to market, not after.
- Sequencing the next 18 months. If you’re planning two purchases in the next two years, the order matters. The new dwelling first (exempt), then the established second (counted under the cap) is a different sequence to the reverse — and at borderline DTI levels, the difference is whether the second loan exists at all.
The role of your broader professional team
The new DTI rule is technically a credit policy change, but it touches three other professionals on your team.
Your accountant controls how income is presented for self-employed borrowers and for those drawing salary plus distributions. That presentation directly drives what a lender will count. A pre-application conversation between your broker and accountant — about whether a particular year’s tax structure helps or hurts borrowing capacity — is the highest-leverage hour either of them will spend on your file.
Your buyers’ agent controls what type of property you’re chasing. If the next property is a new dwelling rather than an established one, the cap doesn’t apply. That changes what’s on the shortlist.
Your financial planner controls the balance between investment property leverage and other wealth-building vehicles — super, growth assets, redraw/offset positioning. If the DTI cap is closing the door on the next investment property under any sensible structure, the planner should be in the conversation about whether the next dollar is best deployed elsewhere for a year.
This is the “orchestrated stack” view of borrowing capacity. The DTI cap is a credit-policy lever, but the response is a multi-professional one.
What APRA might do next
The November 2025 announcement was a signal as much as a setting. APRA explicitly said it will “consider additional limits, including investor-specific limits, if we see macro-financial risks significantly rising or a deterioration in lending standards.” That is not idle commentary. It is the regulator saying: the next step, if needed, is to dial the bucket smaller or split the cap further.
Plausible next moves to model into your 2026–2027 planning:
A reduction in the 20% threshold itself, if aggregate high-DTI lending shares move closer to the cap. Banks would tighten policy further before APRA had to.
An investor-specific tightening. APRA already noted investor activity is “the line on the chart bending up.” Splitting the cap to allow, say, only 15% to investors and 25% to owner-occupiers is a tool that’s been used overseas and remains available here.
Reactivation of investor lending growth caps, last used in 2014–2017, if investor credit growth accelerates. The 2017 episode is in living memory of every senior credit officer in the country. They will respond preemptively.
None of this is forecast — APRA hasn’t announced any of it. But high-income portfolio investors should plan for tighter, not looser, lending conditions over the next 18–24 months as the base case, and structure each new acquisition assuming the next round of cap could be lower or sharper than the current one.
FAQ
Is the APRA DTI rule already in effect?
Yes. The cap activated on 1 February 2026 and is being measured quarterly from that point onward. The first full quarter of data under the new regime will be the March 2026 quarter, with figures due in APRA’s quarterly ADI publication.
What counts as “DTI 6”?
Total household debt divided by gross household income. A household with $1.8 million in combined property debt and $300,000 gross income sits at DTI 6.0. The calculation includes all existing residential mortgage debt, investment loans, and certain other liabilities — which is why investors hit DTI 6 faster than owner-occupiers.
Will my borrowing capacity drop if my DTI is 5.5?
Probably not directly. Most lenders will continue to write loans below DTI 6 without the cap binding. Indirectly, lenders close to their high-DTI bucket may tighten policy across the board to avoid breaching — including for borderline cases below 6 — so the *effective* tightening may extend a little further than the strict line.
Are non-bank lenders affected?
No. The cap applies only to ADIs — banks, mutuals, credit unions, and building societies regulated by APRA. Non-ADI lenders sit outside the cap. They are still subject to the National Consumer Credit Protection Act and responsible lending obligations, and their pricing is generally higher than ADI pricing, so they are a tool to use deliberately rather than reflexively.
Does the new dwelling exemption mean off-the-plan is suddenly the better play?
For a borrower whose only practical issue is the cap, the exemption is real and useful. But off-the-plan and new construction carry their own risks — sunset clauses, valuation shortfalls at completion, builder solvency — that don’t disappear because the finance is exempt. The exemption changes the financing maths, not the property selection maths.
Can I still get an investment loan if I have multiple properties?
Yes. The cap is a 20% allocation, not a ban. Investors with multiple properties remain a substantial part of every ADI’s investor book. The right lender for your file may shift, the structure may matter more, and the sequencing may need to be planned — but the door isn’t closed.
Will the serviceability buffer change?
APRA confirmed in November 2025 that the +3 percentage point serviceability buffer remains in place. There has been industry commentary about whether it should drop to +2.5 or +2 given the current rate environment, but APRA’s position as of the most recent announcement is unchanged.
What’s the worst-case scenario for an investor right now?
A portfolio-builder who applied to a single major lender, late in a quarter that lender was already filling, with rental income shaded at the lender’s most conservative rate, and with no broker mapping the live bucket positions across the market. That borrower will get a “no” they didn’t need to get. The new rule punishes inertia and rewards orchestration.
Where this leaves you
The simple version of the new DTI cap is: from February 2026, banks can write up to 20% of new mortgages at six-times income or higher, separately for owner-occupiers and investors.
The more useful version is: the cap is administered bank-by-bank, quarter-by-quarter, and the tightening has already started showing up in lender behaviour even though the aggregate cap isn’t binding yet. For a high-income investor mid-portfolio-build, the cap reshapes which lender, in what order, with what structure, against what type of property — and whether your accountant and buyers’ agent are in the conversation early.
The investors who keep moving in 2026 are the ones who treat the cap as a planning input, not a barrier.
If you’re working through a portfolio plan and the DTI question is sitting on the table, that’s exactly the conversation a Strategy Call is for. Book a confidential 30-minute review of your current borrowing position and the next twelve months of acquisitions, free, no obligation.
Sources
All facts cited above sourced from primary regulator material (Tier 1) or top-tier industry context (Tier 2/3). All accessed 14 May 2026.
- APRA media release — APRA to limit high debt-to-income home loans to constrain riskier lending (27 November 2025)
- APRA letter to ADIs — Activation of debt-to-income limits as a macroprudential policy tool (27 November 2025)
- APRA information paper — Activating debt-to-income limits as a macroprudential policy tool (27 November 2025)
- APRA — Quarterly authorised deposit-taking institution statistics (release schedule and historical data)
- APRA — Quarterly ADI property exposure statistics – highlights
- APRA — Quarterly ADI statistics for December 2025 release
- APRA — System Risk Outlook, November 2025
- APRA — Announces update on macroprudential settings (serviceability buffer maintained at 3%)
- APRS / APS 220 — Credit Risk Management, Attachment C: Macroprudential Policy: credit measures
- MFAA industry note — APRA’s cap on high DTI home loans aimed at lowering future risk
- Reserve Bank of Australia — Mortgage Macroprudential Policies (Financial Stability Review context)
Build & Protect Financial Services · ACL #385130 · This article is general information only and does not constitute personal financial or credit advice. Information is current as of 14 May 2026 and may change. You should consider your own financial situation and seek personalised advice from a qualified mortgage broker, financial planner, accountant, or solicitor before making decisions.