With housing costs still rising — ABS figures show housing prices were a major contributor to annual CPI of 3.5% to July 2026 — plenty of households are looking closely at their mortgage. Finder’s mid-2026 research says more than half of Australian mortgage holders put over 30% of take-home pay towards repayments, while about 1.4 million put at least 40% towards them.
Refinancing is not a magic fix for an unaffordable loan. But if you have equity, steady income and a competitive alternative available, it can reduce your interest bill and help you get debt-free sooner.
When refinancing can pay off
Refinancing means replacing your existing home loan with a new one, either through another lender or sometimes through a different product at your current lender. The usual aim is a lower rate, but it can also be about better features: an offset account, redraw access, lower fees, or a loan structure that fits your situation.
A rate cut of 0.50 percentage points can be meaningful. Say you owe $500,000 with 25 years remaining.
- At 6.30%, principal-and-interest repayments are roughly $3,320 a month.
- At 5.80%, they are roughly $3,180 a month.
- That is about $140 a month, or $1,680 a year, in lower required repayments.
Those are rounded examples, and your exact result depends on your balance, remaining term and repayment type. Still, the principle is clear: on a large balance, small rate differences add up.
Refinancing is more likely to stack up when you have a sizeable loan balance, several years left to run, a good repayment record, and enough equity to avoid paying lender’s mortgage insurance (LMI). Equity is the gap between what your home is worth and what you owe. Generally, borrowing 80% or less of the property value gives you more options.
Do not ignore the cost of changing loans
The saving is not simply the gap between two interest rates. Add up every cost before you decide.
Common costs can include:
- discharge or settlement fees charged by your current lender
- application, settlement, valuation and legal fees on the new loan
- annual package fees and offset-account fees
- LMI if your new loan is above 80% of the property value
- fixed-rate break costs, if you leave a fixed loan early.
Break costs deserve special attention. They are not a standard flat fee. For a fixed-rate loan, the lender may calculate the cost based on your remaining fixed term, balance and how wholesale interest rates have moved since you fixed. The figure can be small, but it can also run into thousands or more. Ask for a written payout quote valid for a stated date; do not rely on an estimate from a comparison site.
Here is a quick break-even test. If switching costs are $3,000 and your new loan reduces required payments by about $140 a month, $3,000 divided by $140 is around 21 months. If you expect to sell, move, or refinance again before then, the switch may not be worthwhile. Also compare total interest, not just the monthly payment.
The move that can cut years off the loan
A refinance can lower your minimum repayment. The temptation is to spend that breathing room. Sometimes that is the right call — particularly if your budget is under real pressure or you are clearing expensive credit-card debt, where average rates are about 20.99% a year according to RBA data cited in 2026 reporting.
But if your cash flow can handle it, keep paying your old repayment after refinancing.
In the $500,000 example, the new required payment is about $3,180, but you continue paying $3,320. That extra $140 goes to principal. Over time, interest is calculated on a lower balance, so more of every later payment reduces the debt too.
A rough illustration: keeping the old payment on a $500,000, 25-year loan refinanced from 6.30% to 5.80% could shorten the repayment period by roughly two years and save tens of thousands of dollars in interest. Exact outcomes vary, so use the lender’s repayment calculator and check that extra repayments are allowed without penalty.
The same rule works with pay rises, tax refunds and bonuses. Instead of permanently increasing your lifestyle costs, direct part of the extra money to the mortgage. Set an automatic transfer for the day after payday, then review it every six months.
Compare the loan, not the advertisement
A very low introductory rate may revert later. A loan with a slightly higher rate but a useful offset account may suit you better if you keep savings available. For example, $20,000 held in a 6% offset can save interest as though your loan balance were $20,000 lower, while keeping the money accessible for emergencies.
Check these points before accepting an offer:
- Ask your present lender for a retention offer first. They may reduce the rate without a full refinance.
- Obtain a written payout figure, including any break costs and discharge fees.
- Compare comparison rates, ongoing fees, revert rates and loan features.
- Confirm whether extra repayments, redraw and offset access are available and what they cost.
- Check whether the lender will reset you to a longer term. A lower monthly payment can cost more overall if you restart a 30-year clock.
- Avoid adding consumer debt to the mortgage unless you have a firm plan to repay it quickly. Lower monthly repayments can hide a much longer and costlier debt.
- Keep an emergency buffer. Do not pour every dollar into the loan and then rely on a credit card for surprises.
A practical next step this week
Download your latest loan statement and write down four numbers: balance, interest rate, remaining term and current repayment. Get two or three refinance quotes, then compare each against your current loan using the same remaining term. Include every switching cost.
If the numbers work, arrange the new repayment at least equal to what you already pay, rather than accepting the lower minimum as your new normal. If they do not work yet, ask your existing lender for a rate review and build your equity and savings buffer first.
A refinance is paperwork, not a personality test. Take your time, check the full cost, and make any savings work for your future rather than quietly disappearing from your budget.
This article is general information only and not personal financial advice.