What debt consolidation actually is
Consolidation combines several existing debts into a single new loan. It's worth being clear about what it doesn't do: it doesn't reduce what you owe. The financial benefit comes purely from the gap between your old rates and your new one. Consumer debts like credit cards, personal loans, car loans and buy now pay later typically carry rates from 8% to 25% a year, so there's often real room to save.
The debts people usually consolidate
Credit cards typically run 15% to 22% a year on outstanding balances, and are one of the more dangerous debts to carry long-term because of their revolving nature. Personal loans typically run 7% to 20%, depending on the lender and your credit profile. Car loans typically run 6% to 15%. Buy now pay later doesn't charge interest, but does charge late fees and minimum fortnightly repayments, and lenders count every active account as a credit commitment regardless of balance. Store credit tends to carry rates comparable to, or above, standard credit cards.
For comparison, home loan rates currently sit around 5.6% to 5.9%, which is where the real saving potential comes from, a rate gap of up to 16 percentage points against your most expensive consumer debt.
The three consolidation options
A personal consolidation loan is an unsecured or secured personal loan used specifically to pay out existing debts. It's available to renters and homeowners alike, doesn't require property equity, and is fast, often approved within 24 to 48 hours. A borrower with strong credit and stable income can access rates from roughly 7% to 10% on a secured personal loan; someone with impaired credit or recent defaults might see 12% to 20%. The main downside is that it's almost always a higher rate than a home loan.
Rolling debts into your home loan is the most financially powerful option if you're a homeowner with available equity. You apply to increase your home loan balance by the amount of consumer debt you want to clear, at current standard variable rates of roughly 5.6% to 5.9% (April 2026). The risk sits in the term: you're adding short-term consumer debt onto a 25 to 30 year mortgage, which we'll come back to below.
Refinancing to consolidate moves your home loan to a new lender while drawing equity to clear consumer debts at the same time, letting you access a better rate on your mortgage and consolidate in a single transaction. This is most worth considering when your existing home loan rate is above market, or your fixed rate period has just expired.
The maths, worked through
Say you're carrying $8,000 on one credit card at 21% ($240 a month), $5,000 on another at 19% ($150 a month), an $18,000 car loan at 11% ($420 a month), and a $12,000 personal loan at 14% ($280 a month). That's $43,000 in total debt, a blended rate around 16%, and $1,090 a month in repayments.
Roll that $43,000 into your home loan at 5.8%, and the repayment drops to around $253 a month, a saving of $837 a month, or just over $10,000 a year. That looks like an obvious win. Here's the catch: at 5.8% over a full 25-year home loan term, that same $43,000 accrues approximately $38,000 in interest.
A lower monthly payment is not the same as a lower total cost. The fix is to treat the consolidated amount as its own separate debt with a shorter repayment target, a separate loan split of 5 to 7 years rather than letting it sit inside the main 25-year loan. To put the three paths side by side: keeping it as a 3-year personal loan at 14% costs about $9,600 in total interest. Structuring it as a separate 5-year split at 5.8% costs about $6,500, the lowest total cost of the three. Letting it ride inside the main 25-year loan at 5.8% costs roughly $38,000, by far the most expensive option despite having the lowest headline rate. That's the term trap, and it's worth avoiding.
When consolidation makes sense, and when it doesn't
It makes sense when you're making minimum payments across multiple high-interest debts with no real progress on the balances, when the combined repayments are genuinely straining your cashflow, when you've got enough home equity without pushing your LVR above 80%, when you're committed to closing the accounts you're consolidating and not rebuilding them, when you're planning to repay the consolidated amount aggressively over a defined shorter period, or when you were planning to refinance your home loan anyway.
It doesn't make sense when your existing debts are small and nearly paid off already, when you don't have enough equity or income to support a larger mortgage, when the spending behaviour that caused the debt hasn't actually been addressed, when your home loan is in a fixed period with break costs bigger than the saving, or when you're close to retirement and consolidation would extend your mortgage term into retirement income.
The loan term risk, explained properly
This is the most misunderstood part of mortgage consolidation, and it's genuinely counterintuitive. Consumer debts like credit cards, personal loans and car loans are short-term by design, most are structured to be repaid within one to seven years. Roll $43,000 of that into a 25-year home loan, and you've stretched the repayment horizon from one to seven years out to 25.
The fix: ask your broker to set the consolidated amount up as a separate loan split with a fixed end date of 5 to 7 years, not as an addition to the main 25-year balance, and make repayments that actually pay it off within that target rather than interest-only. It's also worth knowing that a bank's default approach is to simply add the debt to the main loan term, which produces the most long-term interest revenue for them. A broker's incentive is to get the structure right for you instead.
How consolidation affects your credit score
In the short term, a new credit application creates a small dip through the credit enquiry itself, and multiple applications in a short period do more damage than one. Closing accounts after consolidating also reduces your available credit, which can temporarily lower your score even though your financial position has genuinely improved.
In the medium term, though, it tends to help. Reduced credit utilisation, particularly once cards are closed, is one of the strongest positive signals in most credit scoring models. Consistent on-time repayments build positive payment history, the most heavily weighted factor in most models. And simplified obligations mean fewer chances of a missed payment.
Common mistakes worth avoiding
Consolidating and then rebuilding the debt. This is the single most damaging mistake people make. You consolidate $25,000 in credit card debt into your home loan, feel the relief, and within 18 months the card balances are back to $20,000, except now you're also carrying the extra $25,000 in your mortgage. The fix is simple: close, not just pay out, the accounts you're consolidating.
Focusing only on the monthly payment. A lower monthly payment feels like progress, but it's only real progress if the total interest is lower too. Always ask how much total interest you'll pay on the consolidated loan over its full term, not just what the repayment looks like next month.
Consolidating without addressing the cause. Consolidation is a restructuring tool, not a cure for the spending behaviour that created the debt. If that's part of the picture, the National Debt Helpline (1800 007 007) offers free financial counselling.
Overlooking BNPL accounts. Every active buy now pay later account is counted as a credit commitment by lenders in a home loan or consolidation assessment, regardless of the balance sitting on it.
Applying to multiple lenders without guidance. Each application generates a credit enquiry, and multiple enquiries in a short window signal financial stress and reduce your approval prospects. A broker makes a single enquiry on your behalf and pre-assesses your eligibility before any application is lodged.
How a broker helps
A broker assesses all three consolidation options to identify the best total-cost outcome, structures the consolidated debt as a separate split with a shorter term, protects your credit file by assessing your eligibility before lodging anything, checks whether BNPL and store cards are affecting your borrowing capacity, and compares refinancing costs against the consolidation saving. The service costs you nothing, since it's paid by the lender at settlement.
Done right, debt consolidation that lowers your monthly outgoings, clears high-interest consumer debt, and is structured with a clear, shorter repayment target for the consolidated amount is one of the most effective financial improvements a homeowner can make. The structure is what makes the difference.
Frequently asked questions
Is it a good idea to consolidate debt into your mortgage? It can be, if you have sufficient equity, the rate gap is significant, and you structure the consolidated amount as a separate shorter-term split rather than letting it sit in a 25-year loan. The risk to watch for is a lower monthly payment hiding a higher total interest cost over the full loan term.
What debts can be consolidated? Most consumer debts, including credit cards, personal loans, car loans, store credit and BNPL accounts. Tax debts and HECS-HELP can't be consolidated through standard consumer finance products.
Does debt consolidation hurt your credit score? In the short term, a new application creates a credit enquiry that can dent your score slightly. In the medium term, reduced credit utilisation, simplified repayment obligations, and consistent on-time payments on the consolidation loan typically improve your score over 12 to 24 months.
Can I consolidate debt if I have bad credit? It's more challenging but not impossible. Specialist lenders exist at higher rates, and a broker assessment helps identify which ones will actually consider your situation.
How much can I save by consolidating debt? As a general guide, a homeowner consolidating $43,000 in consumer debt at an average rate of 16% into a home loan at 5.8% could reduce their monthly debt repayments by more than $800.
What's the difference between debt consolidation and refinancing? Refinancing means moving your home loan to a new lender, usually for a better rate. Debt consolidation means combining multiple debts into one. A refinance-to-consolidate transaction does both at once.
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