Simple hacks to consolidate debt into your home loan

How debt consolidation refinancing works

You combine credit cards, personal loans, and car loans into your mortgage by refinancing to a higher loan amount. The lender pays out your existing debts, and you repay everything through a single monthly home loan repayment at a lower rate than most consumer debts carry.

Consider a scenario where someone holds $25,000 across a car loan and two credit cards, with repayments totaling around $1,200 monthly. By rolling that debt into their mortgage, the monthly cost of servicing that $25,000 drops to approximately $150 to $180, depending on their mortgage rate. The immediate cashflow improvement is significant, though the total interest paid over the life of the loan depends entirely on how quickly they clear the consolidated amount.

When the numbers favour consolidation

Consolidation makes sense when the interest you're paying on consumer debt exceeds your home loan rate by a meaningful margin. Credit cards often sit between 18% and 22%, personal loans between 8% and 14%, and car loans between 6% and 12%. If your mortgage refinancing rate lands below 7%, the arithmetic tilts in your favour.

The cashflow benefit alone doesn't justify the move. You need to compare the total interest cost of leaving debts separate against the cost of absorbing them into a longer mortgage term. If you consolidate $30,000 of consumer debt into your home loan and then take 25 years to repay it, you'll likely pay more interest overall despite the lower rate. The strategy works when you maintain or increase the repayment amount after consolidation, clearing the absorbed debt faster than the remaining mortgage term.

Serviceability and how lenders assess the application

Lenders evaluate your ability to service the higher loan amount using the same criteria they apply to any refinance application. They assess your income, existing commitments, living expenses, and apply a buffer to the interest rate. Consolidating debt doesn't remove those liabilities from the serviceability calculation, it simply restructures them.

Some lenders view debt consolidation favourably because it reduces your monthly outgoings and improves your debt-to-income ratio. Others take a more conservative view, particularly if the debts being consolidated suggest a pattern of overcommitment. The outcome depends on your overall financial position and the lender's appetite for that profile.

The equity requirement and loan-to-value ratio

You need sufficient equity in your property to absorb the additional debt without exceeding the lender's maximum loan-to-value ratio. Most lenders cap refinancing at 80% LVR without requiring lenders mortgage insurance, though some will lend up to 90% or 95% depending on your circumstances.

If your property is worth $700,000 and your current mortgage sits at $450,000, you have $250,000 in equity. At an 80% LVR, you could borrow up to $560,000, leaving $110,000 available to consolidate debts and cover refinancing costs. If your existing debts total $40,000 and refinancing costs add another $3,000, the consolidated loan would sit at $493,000, comfortably within the threshold.

Structuring the loan to maintain discipline

Once debts are consolidated, the risk is treating the mortgage as a single undifferentiated balance and losing sight of the portion that was previously high-interest debt. One approach is to split the loan, isolating the consolidated debt in a separate account with a higher repayment allocation.

For instance, if you consolidate $35,000 into your mortgage, you might structure the loan as a $400,000 primary split and a $35,000 secondary split. You then direct extra repayments exclusively to the smaller split, clearing it within three to five years rather than allowing it to drift across the full loan term. This approach preserves the cashflow advantage while preventing interest cost blowout.

When consolidation doesn't solve the underlying issue

Refinancing to consolidate debt treats the symptom, not the cause. If the debts accumulated due to temporary circumstances such as medical expenses, parental leave, or a period of reduced income, consolidation can reset your position and provide breathing room. If the debts reflect ongoing overspending relative to income, consolidation without behavioural change simply frees up credit limits that get used again.

We regularly see situations where someone consolidates $20,000 of credit card debt into their mortgage, then rebuilds that credit card balance within 18 months because the cards remain open and accessible. The result is $20,000 added to the mortgage and $20,000 back on the cards, leaving them in a worse position than before. Closing or significantly reducing credit limits after consolidation is often part of the conversation.

Tax implications for investment properties

If you're consolidating personal debt into a loan secured against an investment property, the portion of the loan relating to personal debt is not tax-deductible. The Australian Taxation Office treats loan purpose, not loan security, as the determinant of deductibility.

This requires careful loan structuring. The investment loan and the consolidated personal debt should sit in separate splits with separate accounts, ensuring the interest on each portion is clearly attributable to its purpose. Mixing the two creates complications at tax time and can result in losing deductions on a portion of the investment loan.

The refinancing process and timeline

The mechanics of a refinance application for debt consolidation mirror a standard refinance, with a few additional steps. You'll need to provide statements for all debts being consolidated, along with current payout figures. The lender arranges a valuation of your property, assesses your serviceability, and issues formal approval.

Once approved, the lender pays out your existing mortgage and the nominated debts directly at settlement. The process typically takes three to five weeks from application to settlement, depending on the lender's turnaround time and how quickly you can supply documentation. Your existing debts remain in place until settlement, so you'll need to continue meeting those repayments during the application period.

Offset accounts and redraw after consolidation

Maintaining an offset account after consolidation gives you flexibility to park surplus cash and reduce interest without locking it inside the loan. If your income fluctuates or you anticipate irregular expenses, an offset preserves access to funds while still reducing the interest calculated daily on your loan balance.

Redraw facilities offer similar functionality but with less liquidity. Some lenders restrict redraw access or charge fees for withdrawals, and funds held in redraw don't always reduce the minimum repayment in the same way an offset does. For someone consolidating debt to improve cashflow, an offset typically provides more control.

Call one of our team or book an appointment at a time that works for you. We'll review your current debts, model the consolidation scenario with specific numbers, and identify whether refinancing delivers a genuine financial improvement for your situation.

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