Debt Consolidation Explained
How does debt consolidation into a home loan work, and is it a good idea?
By Andrew, franklenn FINANCE 7 min readUpdated 3 November 2026
The short answer
Debt consolidation means rolling higher-interest debts, such as credit cards, car loans and personal loans, into your home loan, usually through a refinance. Because home loan rates are generally lower, your monthly repayments can drop significantly. The catch is time: if those debts are stretched over 25 or 30 years, you can pay more interest in total, not less. Consolidation works best when you keep repaying the consolidated debts quickly, close the old accounts and address what caused the debt.
Detailed explanation
How it works
You refinance or increase your home loan by enough to pay out your other debts. The new lender, or your existing one, pays those debts directly at settlement, and you're left with one larger home loan at a home loan rate instead of several debts at higher rates.
To do this you need enough equity in your property, usually keeping the total loan within 80% of its value to avoid LMI, and you need to pass the lender's serviceability assessment on the larger loan. Paying out debts actually helps serviceability, because those repayments are removed from the calculation.
Some lenders will only consolidate certain types of debt or cap the amount you can roll in, and the treatment of tax debts, buy now pay later accounts or debts owed to family can vary. That's one reason it helps to compare policies across several lenders before applying.
The benefits
The immediate benefit is cash flow. Credit cards and personal loans often carry rates several times higher than a home loan, so rolling them in can free up hundreds of dollars a month. One repayment is also simpler to manage than four or five.
Reducing several minimum repayments to one manageable figure can also ease stress, which counts for a lot. When repayments feel under control, it's easier to plan, build savings and make good decisions about the future.
- Lower interest rate on the consolidated debts.
- Lower total monthly repayments.
- One loan, one due date.
- Breathing room if repayments have become stressful.
The real cost: time
A car loan with four years left at a higher rate may cost less in total interest than the same balance spread across 27 years at a home loan rate. Lower rate, longer time, potentially more interest overall. You may also still be paying for the car long after you've sold it.
The fix is straightforward: once the debts are consolidated, keep paying extra, ideally close to what you were paying before, so the consolidated amount is cleared in a few years. A separate loan split for the consolidated debts makes this easier to track.
A practical approach is to work out what you were paying on the old debts each month, then set your repayment on the consolidated split close to that figure. You still get the benefit of the lower rate, but you clear the debt quickly rather than carrying it for decades.
Doing it well
Consolidation is a tool, not a cure. If the debts came from spending that hasn't changed, they can build up again on top of a bigger home loan, which leaves you worse off than before. We'd rather talk honestly about that upfront.
It's also worth asking whether every debt should be included. A low-rate car loan that's nearly paid off may be better left alone, while high-rate credit card debt is usually the first to go.
- Close or reduce the limits on paid-out credit cards.
- Put the consolidated debts in their own split with a shorter repayment plan.
- Set up a simple budget so the debts don't return.
- Check for early repayment fees on car or personal loans.
- If you are struggling with repayments, the National Debt Helpline (1800 007 007) offers free financial counselling.
Worked example
Consolidating $48,300 of personal debts
An illustrative example. A homeowner has a $398,000 home loan at 6.04% p.a. with 27 years left, a $27,400 car loan at 9.95% p.a. with 4 years left, a $12,300 personal loan at 13.5% p.a. with 3 years left and an $8,600 credit card at 20.99% p.a. (minimum repayment assumed at 3% of the balance). They refinance $446,300 at 6.04% p.a. over 27 years.
| Home loan repayment now | $2,493.41 a month |
| Car loan repayment | $694.28 a month |
| Personal loan repayment | $417.40 a month |
| Credit card minimum (3%) | $258.00 a month |
| Total repayments now | $3,863.09 a month |
| Consolidated loan repayment over 27 years | $2,796.00 a month |
| Monthly cash flow freed up | $1,067.09 |
| Interest on the $48,300 if stretched over 27 years | $49,739.86 |
| Interest on car and personal loans on original terms | $8,651.85 |
| Alternative: repay the $48,300 split over 4 years | $1,135.21 a month, $6,190.22 interest |
Stretching the debts over 27 years frees up about $1,067 a month but could cost around $49,740 in interest on those debts. Repaying the $48,300 split over four years instead keeps total repayments at about $3,628.62 a month, still $234.47 less than now, with just $6,190.22 in interest. Figures are illustrative.
Illustrative only. Figures are examples, not a quote or a recommendation.
Common mistakes
- Stretching short-term debts over 25 to 30 years without a plan to repay them faster.
- Keeping the old credit cards open and running them up again.
- Not checking early exit fees on existing loans.
- Consolidating without enough equity and triggering LMI.
- Treating consolidation as a fix without addressing what caused the debt.
Frequently asked questions
Next steps
Talk to franklenn FINANCE
If you're juggling several debts and want to see whether consolidation makes sense, book a free discovery call with franklenn FINANCE and we'll work through the real numbers with you.
This guide is general information only and does not consider your objectives, financial situation or needs. It is not financial, tax or legal advice. Lender policies, rates and government schemes change. Please speak with us, and with your accountant or solicitor where relevant, before acting.