Whether consolidation saves money comes down to the rate, the fees and especially the term. A lower repayment over a longer term might cost more overall, depending on the rate.
Two different questions are behind "what would consolidation do for me". One is about your week-to-week: how much would the new repayment be, and what would it free up between paydays. The other is about the years ahead: what will this debt cost in total before you've paid it off. Our members almost always think first about the first question, which makes sense, because the repayment is an attractive number. Lender marketing tends to lead with the repayment number too, because it is the one that looks best. This guide works through both questions with real arithmetic, so you can see each answer separately before anyone shows you an offer.
Everything in a consolidation comparison comes from four inputs, and you can assemble them from your statements in less than twenty minutes:
What you pay now. Add up the actual monthly amount going to every debt you would consolidate: each credit card, each personal loan, each Afterpay or Zip Pay account. For credit cards, use what you actually pay, not the minimum on the statement, because your real behaviour is the path you are comparing against.
What your current debts cost. Each debt has a rate. The one that matters for comparison is the weighted average, which leans toward your larger balances. Say you carry $12,000 of credit card debt at around 21% and a $9,000 personal loan at 13.9%. The weighted average across that $21,000 is about 18%. That weighted average is rate a consolidation loan has to beat, rather than the credit card rate alone or the cheapest debt's rate.
How long your current debts will take to pay off. If you kept paying exactly what you pay now, when would each debt be gone? Loan statements show the remaining term. For credit cards, any repayment calculator can estimate payoff time from the balance, rate and your actual payment. This matters because comparing a five-year loan against a two-year current path is how a longer term ends up looking like a saving when it is not.
What the new loan charges beyond interest. Establishment fees, monthly account fees and any early-exit fees on your old loans all land as amounts a consolidation loan will need to pay for. The comparison rate on any loan you consider is a useful shortcut here, because it folds interest and most standard fees into one percentage.
With the four inputs together, the comparison is simple. A consolidation loan saves you money only when its rate, after fees, over a similar term, beats your weighted average. In the example above, a loan at 12.99% is clearly under the 18% weighted average, so at a matched term it wins. A loan at 17.5% barely lowers the repayments before fees and probably fails after them, even though it undercuts the credit cards – however some people are ok with paying just below or even above what they pay now, because it's a single repayment and if they choose a shorter term their debt will be gone sooner. And a loan that only beats your cheapest debt is a reason to leave that debt out of the consolidation entirely, which is completely fine: nothing forces every debt into the new loan.
Our members told us about answering an entire application before discovering the offered rate was no better than the debts they already had. Until you know the rate you would actually be offered, treat every consolidation scenario as provisional.
The term is where people often get consolidation maths wrong. Take a single $20,000 consolidation loan at 12.99% (illustrative) and vary nothing except the term.
| Term | Monthly repayment | Total interest |
|---|---|---|
| 3 years | $673.78 | about $4,256 |
| 5 years | $454.96 | about $7,298 |
| 7 years | $363.73 | about $10,553 |
Reading down the left column feels like relief: each row is a lesser repayment than the one above. Reading down the right column tells another story: the seven-year version costs about $6,300 more than the three-year version for exactly the same debt at exactly the same rate. Neither column is the truth on its own. If your current debts would have cost $8,000 in interest on their current path, the five-year row still saves you around $700 while cutting your repayment, and the three-year row saves far more if you can hold the higher repayment. Long terms are not automatically wrong – what matters is that the repayment and the total are considered together, because either one alone will mislead you.
Fees convert a rate saving into a timing question: how long before the interest you are saving has paid back the fees you paid to get it?
The arithmetic is short. Suppose a consolidation scenario saves you $85 a month in interest against your current path, and the loan charges a $495 establishment fee plus $10 a month in account fees. The monthly fee eats into the saving first, leaving $75 a month, and the establishment fee then takes $495 divided by $75, about six and a half months, to claw back. Everything after that is savings you keep. Now run the same sum with a marginal case, a $20 a month interest saving and the same fees, and the answer is roughly four years of break-even on a loan that might only run five. Fee-heavy loans need big rate gaps or long horizons to justify themselves, and small savings rarely make sense.
One more conversion keeps comparisons honest. Loans quote monthly repayments, but many people run their lives fortnightly or weekly. A $460 monthly repayment is $212.31 a fortnight or $106.15 a week in equivalent terms, and lining the repayment up with your actual pay frequency (where the lender offers it) does more for sustainability than it does for the maths. Our members with weekly income told us that weekly deductions landing just after payday were easier to manage than one large monthly hit, even when the totals matched. Paying fortnightly instead of monthly does slightly reduce interest on most loans, because money arrives earlier, however the effect is modest. Choose the cadence that fits your pay cycle (the folklore about big fortnightly savings is mostly that).
If working through this by hand feels heavy, that is a fair signal too. The method above is deliberately manual so that it works with nothing but your statements, and about twenty minutes with them in front of you produces the honest version of your answer.
If the comparison says consolidation saves you money and eases your week-to-week, the remaining question is whether it suits your situation more broadly, taking in eligibility, your plans for the old credit limits and the alternatives, which is its own decision. If the comparison is marginal or negative, you have just saved yourself an application and a credit enquiry, which is why the comparison is worthwhile. And if the numbers show that no realistic repayment fits your budget, that is not a consolidation problem. Contact your providers' hardship teams and the National Debt Helpline on 1800 007 007 before taking on any new credit.
The WeMoney app can assemble most of the four inputs for you once your accounts are connected, showing each debt's balance and repayments in one place. When you are ready to compare consolidation options, you can do that right in the app, with personalised loan offers and an approval score that shows your chances without doing any hard checks a lender can see. The rate that matters is still the one you are actually offered, weighed against your own weighted average using exactly the method above.
This article provides general information only. It does not take your personal circumstances into account and is not financial, credit or legal advice. Consider your own situation and seek advice from a suitably qualified professional if you need it.
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