Debt consolidation means taking out one new loan to pay off several existing debts, so you're left with a single repayment instead of juggling multiple due dates, interest rates, and lenders. It's a genuinely useful tool for some people and a costly mistake for others — the difference comes down to the numbers, not the concept.
The mechanics are simple. Say you're carrying a $10,000 credit card balance at 19% interest, a $5,000 personal loan at 12%, and a $3,000 store card at 22%. Instead of managing three repayments across three rates, you take out one $18,000 consolidation loan — ideally at a lower rate than the weighted average of what you were paying before — and use it to pay off all three.
Whether that actually saves you money depends on two things: the new interest rate, and the new loan term. If your consolidation loan carries a genuinely lower rate and a similar repayment timeframe, you'll pay less interest overall and simplify your finances at the same time. That's the scenario where consolidation earns its reputation as a smart move.
The trap is the term. Lenders often stretch consolidation loans over a longer period to make the monthly repayment look more attractive — and a longer term with a lower rate can still cost more in total interest than the shorter, higher-rate debts it replaced. As a rough example: $18,000 at 12% over 3 years costs meaningfully less in total interest than the same $18,000 at 9% stretched over 7 years, even though the second option has the lower rate and the smaller monthly repayment. Lower monthly repayments and lower total cost are not the same thing, and it's easy to focus on the one that makes the sales pitch look better.
Consolidation loans are most commonly used to combine credit cards, store cards, and existing personal loans — the kind of debt that tends to carry higher interest rates and inconsistent repayment structures. It's less commonly, and less usefully, applied to things like car loans or HECS debt, which typically already carry lower rates or different repayment rules.
When assessing you for a consolidation loan, lenders look closely at your income relative to your total debt load, your repayment history on the debts you're consolidating, and — critically — whether you've got a pattern of running balances back up after paying them down. A consolidation loan doesn't fix a spending problem; it restructures existing debt. If new debt creeps back onto the cards you just cleared, you can end up worse off than when you started, now carrying both the consolidation loan and fresh card balances.
Getting the term and rate right — and understanding the true break-even point rather than just the headline monthly repayment — is where a broker earns their fee. A good broker will run the actual numbers with you before you commit, not just find you a loan that gets approved.