APRA's debt-to-income limit and your debt consolidation refinance

24 July 2026 · Debt consolidation · 7 min read

If you've been thinking about rolling credit card balances, a car loan or a personal loan into your home loan, there's a new rule sitting quietly in the background that could affect whether your bank says yes. APRA has activated a debt-to-income (DTI) lending limit on residential mortgage lending as a macroprudential tool, effective from February 2026, allowing up to 20 per cent of authorised deposit-taking institutions' new mortgage lending to be at a DTI greater or equal to six times, applied separately to owner-occupier and investor portfolios. It's the first time Australia has used a hard DTI cap like this, and it lands at an awkward moment for borrowers already under pressure. The Reserve Bank has held the cash rate steady for now — at its most recent meeting the Board decided to leave the cash rate target unchanged at 4.35 per cent — but that follows three increases in the cash rate target since the beginning of the year, meaning financial conditions are now tighter than they were, with the next decision due at 2.30 pm on 11 August 2026.

For anyone carrying expensive consumer debt alongside a mortgage, that combination — a tighter DTI cap plus a higher cash rate — is worth understanding before you apply.

What the DTI limit actually does

A debt-to-income ratio simply divides your total debt (mortgage, car loan, credit cards, personal loans, HECS in some calculations) by your gross annual income. A ratio of six means your total debt is six times what you earn before tax. Under the new rule, APRA has written to all ADIs requiring that, from February 2026, they limit residential mortgage lending with a DTI ratio greater than or equal to six to 20 per cent of all new mortgage lending, measured on a quarterly basis. It's a quota on the bank, not an outright ban on the borrower — within the limit, banks retain discretion to lend to creditworthy high DTI borrowers, in line with their own risk appetite and lending policies.

APRA's own explanation of the change points to a system-wide concern rather than any single borrower's circumstances. The regulator has noted that risks can build rapidly when interest rates are low or declining and competition among banks intensifies, which can lead to easing lending standards, and it will consider additional limits if macro-financial risks rise further. Some lending is carved out altogether — the DTI limit excludes bridging loans for owner-occupiers and loans for the purchase or construction of new dwellings — but a standard refinance used to consolidate consumer debt isn't in that exempt category.

Why this matters for debt consolidation specifically

A refinance-to-consolidate transaction — moving your home loan to access a better rate while drawing on equity to clear credit cards, BNPL balances or a car loan — increases the size of the mortgage relative to your income. If that pushes your DTI to six times or above, your application now competes for a slice of a bank's capped 20 per cent allocation for that quarter, rather than being assessed purely on its own merits. It doesn't mean the loan is off the table. It does mean timing, lender choice and the strength of the rest of your application matter more than they used to.

This sits on top of an existing safeguard that hasn't changed: the mortgage serviceability buffer, one of APRA's other active macroprudential settings, remains steady at three per cent, on top of a one per cent counter-cyclical capital buffer. In practice, lenders still need to assess whether you could service the new, larger loan at a rate several points above what's on offer today — the DTI cap is an additional filter, not a replacement for that test.

Illustrative example

This example is illustrative only and doesn't reflect any actual loan, applicant or outcome. Imagine a couple with a combined gross income of $140,000, an existing mortgage, a car loan and around $30,000 across two credit cards. Refinancing to consolidate the car loan and the cards into the mortgage might lift their total debt closer to, or past, six times their income. Depending on the lender's remaining quarterly allocation under the DTI cap, that application might be assessed more cautiously, take longer, or be better suited to a lender with more headroom left in its 20 per cent bucket that quarter. A mortgage broker who tracks which lenders still have capacity can be useful in exactly this kind of scenario.

What you can actually do about it

Start by getting a clear picture of your total debt against your income before you apply anywhere — not after a knockback. If a consolidation refinance would push you close to or over a 6x DTI ratio, spreading the application across a lender that hasn't yet used up its quarterly high-DTI allocation may improve your chances, though no broker or lender can guarantee an outcome. It's also worth asking whether a smaller top-up with your existing lender, rather than a full refinance elsewhere, might keep your DTI lower or avoid the cap altogether. And if you're already juggling multiple high-interest debts, tackling the structure of your borrowing sooner rather than later — before further cash rate movements or lending policy changes — tends to leave you with more options, not fewer.

None of this is a reason to panic. Most Australian borrowers sit well under a 6x DTI ratio and won't be affected by the cap at all. But if you're specifically considering a debt consolidation refinance, it's a new variable worth factoring in alongside the usual questions about rate, fees and loan term.

Common questions

Does the DTI limit mean I can't refinance to consolidate debt?
No. The limit caps the share of a bank's new lending that can go to borrowers with a DTI of six or more — it doesn't ban individual loans. Many consolidation refinances sit well under that threshold and aren't affected at all.

How do I know if my DTI ratio is close to six?
Add your total debt (mortgage, car loan, personal loans, credit card limits and any other borrowings) and divide by your gross annual household income. A mortgage broker can run this calculation properly, factoring in how different lenders treat things like credit card limits versus balances.

Are investment loans treated differently to owner-occupier loans under the cap?
Yes. The 20 per cent allocation applies separately to owner-occupier and investor lending, so a bank's capacity in one pool doesn't affect the other.

Is refinancing to consolidate debt always a good idea?
Not necessarily. Rolling short-term consumer debt into a 25–30 year home loan can reduce monthly pressure but may increase the total interest paid over the life of the loan. It's worth weighing that trade-off carefully, ideally with guidance specific to your situation.

Related reading: our guide to the 2026 fixed-rate cliff covers what to do if your fixed term is expiring around the same time you're weighing up a consolidation refinance. You can also explore our refinance home loan hub, run the numbers on our calculators, or start an enquiry via our refinance page if you'd like to talk through your options.

General information only — not credit advice. Credit assistance is provided by a licensed mortgage broker.