Refinancing your home loan means replacing your current mortgage with a new one, either with the same lender or a different one, usually to secure lower Interest Rates, change your repayments or unlock features your current loan does not have.
Done well, it can save tens of thousands over a loan’s life. Done carelessly, it can add fees and years to your debt. This guide explains what refinancing involves, what it costs, where it goes wrong and how to run the process in the right order.
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Why homeowners refinance
The most common reason is simple arithmetic: a lower rate on the same balance means lower interest for the remaining life of the loan. Others refinance to consolidate debts into one repayment, switch between fixed and variable rates, access equity for renovations or add features such as an offset account their current loan lacks. Whatever the motivation, the test is the same: the total saving should clearly exceed the total cost of switching.
What refinancing changes beyond the rate
Every application triggers a credit enquiry, and settling into a pattern of frequent refinancing can work against your credit score. Compare offers across the major banks and non-bank lenders rather than returning to your current lender first, because loyalty pricing rarely rewards it.
Watch the insurance trap when you increase your borrowing. If the new loan takes you above 80% of the property’s value, fresh Mortgage Insurance may apply, and LMI premiums run into thousands of dollars even when they are capitalised into the loan so nothing seems to come out of pocket.
How the process actually runs
Start by comparing structures rather than headline rates: the market includes basic variable, fixed, split and package products among standard loan types, and the right structure depends on how certain your income is and whether you will use features. Your loan-to-value ratio shapes both pricing and approval chances, so estimate it early from a recent valuation or purchase price.
Once you shortlist a deal, most lenders issue conditional approval before full assessment, which gives you confidence to order a valuation and prepare paperwork. Budget the switching costs: discharge and registration fees from your old lender, possible government charges and any application fee on the new loan. Most states do not charge stamp duty when you simply switch lenders on the same home, but confirm your state’s current rules rather than assuming.
Finally, choose the loan terms deliberately. Stretching a loan back out to 30 years lowers the monthly payment but raises lifetime interest, while features such as an offset account or redraw facility are worth paying slightly more for only if you will genuinely use them.
The mistakes that cost the most
Three account for most refinancing regrets. Extending the loan term without recalculating total interest turns a rate win into a long-term loss. Comparing only one or two alternatives misses the pricing gap between lenders, which can be substantial at the same point in the cycle. And overlooking fees on both sides of the switch, particularly discharge costs and capitalised insurance, erodes savings that looked larger in the advertisement. Check each quote against all three before signing anything.
Where to start
This week, take three numbers from your latest statement: your current rate, your remaining balance and your remaining term. Request your lender’s discharge fee in writing, then price the same loan profile with at least two other lenders including one non-bank. If the best alternative does not beat your current loan by more than the total switching cost within two years, staying put is itself the smart move, and you can revisit when rates or your equity position change.
