On February 1, 2026, a quiet rule change landed that affects almost every property buyer in Australia. It didn't make the front page. There was no press conference. But if you're planning to buy, invest, or refinance this year, you need to understand it — because it might have just changed how much you can borrow.
It's called the DTI cap, and here's everything you need to know.
What Is the DTI Cap?
DTI stands for Debt-to-Income ratio. It's a simple calculation:
Total debt (including the new loan) divided by your gross annual income.
APRA — the Australian Prudential Regulation Authority, the body that regulates banks — has now set a cap at 6x. That means your total debt can't exceed six times your gross income when you borrow from an APRA-regulated lender (which includes all the big banks).
Let's make that concrete. If you earn $100,000 a year before tax, your total debt — including the home loan you're applying for, plus any existing mortgages, car loans, personal loans, and credit card limits — can't exceed $600,000.
Sounds straightforward. But the impact is anything but.
Who Gets Hurt?
Let's walk through three real scenarios to see how this plays out in practice.
Scenario 1: First Home Buyer in Sydney
James, 29, earns $90,000/year. No existing debt. Looking to buy his first apartment.
Before the DTI cap: Based on his income, expenses, and current interest rates, James could potentially borrow around $620,000. That got him into a decent one-bedder in the Inner West.
After the DTI cap: His total debt can't exceed $90,000 x 6 = $540,000. That's $80,000 less borrowing power — overnight. The apartments he was looking at are now out of reach. He either needs to save a bigger deposit, earn more, or look further out.
Scenario 2: Property Investor
Priya and Raj, combined income $120,000/year. They already own their home with a $400,000 mortgage remaining. They want to buy an investment property.
DTI cap: $120,000 x 6 = $720,000 total debt ceiling. They already have $400,000 in debt, which means they can only borrow an additional $320,000.
Before the cap, their serviceability (ability to make repayments) might have allowed them to borrow $450,000 or more for the investment property. Now the DTI cap is the binding constraint, not their cash flow. That's a $130,000 difference — enough to knock out most investment-grade properties in capital cities.
Scenario 3: Dual Income Couple
Sarah and Tom, combined income $180,000/year. No existing debt. Buying their first home together.
DTI cap: $180,000 x 6 = $1,080,000 total debt ceiling.
For most purchases under $1M (which is the majority of the market outside Sydney's premium suburbs), the DTI cap won't be the limiting factor. Their serviceability assessment will likely cap them before DTI does. So for this couple, not much changes.
See the pattern? The DTI cap hits hardest on single-income buyers and investors who already carry debt. Dual-income households with no existing debt? Mostly fine.
Who Does It NOT Affect?
To be clear, plenty of borrowers won't feel this at all:
- High-income earners — If you're on $200k+, a 6x DTI gives you a $1.2M ceiling. For most purchases, the old serviceability test will be the tighter constraint.
- People with small or no existing debt — If you've paid off your car loan and don't carry a mortgage, more of the 6x ceiling is available for your new loan.
- Buyers in affordable markets — If you're buying in regional Victoria, Adelaide, or Brisbane's outer ring where median prices sit at $500-700k, the DTI cap is less likely to bite.
The Workaround Nobody's Talking About
Here's the part most articles won't tell you: the DTI cap only applies to APRA-regulated lenders. That means the big four banks (CBA, ANZ, Westpac, NAB) and other authorised deposit-taking institutions.
But not every lender falls under APRA's umbrella.
Non-bank lenders — companies like Liberty, Pepper Money, Firstmac, and La Trobe Financial — are regulated by ASIC, not APRA. They're not bound by the DTI cap guidance.
Does that mean you can borrow unlimited amounts from non-banks? No. They still have their own credit policies and responsible lending obligations. But they have more flexibility in how they assess your application. If you're just over the 6x DTI threshold at a bank, a non-bank lender might still be able to help.
This is where a broker makes the difference. Going directly to your bank means you're limited to one lender's policies. A broker has access to both bank and non-bank lenders — and knows which ones have the most flexible approach to DTI. That's not something you can Google.
There's a trade-off, of course. Non-bank rates can be slightly higher than the major banks (we're typically talking 0.2-0.5% more). But if the alternative is not buying at all, that premium might be worth it — especially if you plan to refinance back to a bank once your DTI improves.
What This Means for the Property Market
The DTI cap is designed to cool things down. Less borrowing capacity means fewer buyers can stretch to the top of their range at auction. In theory, this should take some heat out of prices — particularly in markets where buyers were already stretching themselves thin.
Where will the impact be felt most? Probably in Sydney's expensive middle ring — areas like the Inner West, Northern Beaches, and Eastern Suburbs — where median prices sit between $1M and $1.5M and single-income or lower-income buyers were already at their limit.
Melbourne's inner suburbs could see a similar effect, though Melbourne's market is already softer than Sydney's, so the impact might be more muted.
Interestingly, there's a silver lining for first home buyers in the medium term. If the cap reduces competition at auctions (especially from leveraged investors), prices could soften in some areas. The buyers who can't borrow as much might actually benefit from lower prices down the track.
But in the short term? If you're right on the edge of that 6x threshold, you need a plan. And the sooner you get one, the better.
What Should You Do Now?
If you're planning to buy or invest in the next 12 months, here's your checklist:
- Know your DTI number. Add up all your existing debt (mortgage balances, car loans, personal loans, credit card limits). Divide by your gross annual income. If it's already above 5x, you need to be strategic about your next move.
- Pay down existing debt where you can. Every dollar of debt you clear opens up borrowing room. Even reducing your credit card limit helps (remember — banks count the limit, not the balance).
- Talk to a broker early. Don't wait until you've found a property. A broker can tell you exactly where you stand with the new rules — across both bank and non-bank lenders — so you know your real budget before you start shopping.
The rules have changed. But the game isn't over — you just need to know how to play it.