Refinancing means replacing your current home loan with a new one — either with a different lender, or a different product with your existing one — usually to get a better rate, access equity, change loan features, or all three. Done at the right time, it can save tens of thousands of dollars over the life of a loan. Done without checking the numbers, it can cost you more than it saves.
People refinance for a handful of common reasons. The most obvious is chasing a better interest rate — even a small rate reduction compounds meaningfully over a 25 or 30 year loan. Others refinance to access equity, drawing on the value that's built up in their property to fund a renovation, an investment, or another purchase. Some are after features their current loan doesn't offer, like an offset account or more flexible extra repayments. And some are simply switching lenders because their current one has stopped being competitive.
Before refinancing, it's worth doing a genuine break-even calculation rather than just comparing headline rates. Refinancing isn't free — there are typically discharge fees from your current lender, application or valuation fees with the new one, and sometimes government charges depending on your state and loan structure. Add these up, then work out how many months of savings from the lower rate it takes to cover them. If you're planning to sell or refinance again within that window, the numbers might not stack up. If you're settled for years to come, they usually do.
Watch for exit fees specifically — while break costs on variable loans were largely phased out years ago, fixed-rate loans can still carry significant break costs if you refinance before the fixed term ends, and these can be substantial enough to erase any benefit from switching.
There's also what's sometimes called the loyalty tax: many lenders offer sharper rates to attract new customers than they do to retain existing ones. It's not unusual for someone who's been with the same lender for years, without ever checking in, to be paying a noticeably higher rate than a new customer walking in the door for the identical product. Lenders are generally betting that inertia will keep you from looking elsewhere — refinancing (or even just calling and asking for a better rate) is how you opt out of that bet.
As a general rule, it's worth reviewing your home loan roughly once a year, even if you're not planning to switch. Rates move, lender policies change, and a loan that was competitive three years ago may no longer be.
There are a few clearer signals it's worth actively looking. If your rate hasn't moved in over two years despite market changes, that's worth investigating. If a fixed rate term is approaching its end, that's a natural decision point — you'll be reassessed regardless, so it's the moment to compare rather than default to whatever your lender rolls you onto. And a significant life change — a pay rise, a new property, a shift in what you need from the loan — is a good trigger to check whether your current structure still fits.
The comparison work is where refinancing gets tedious — checking rates, features, and fees across dozens of lenders, then working out the real break-even cost for each. A broker does that legwork for you and, because they can see products across their whole panel rather than one lender's offering, is often better placed to spot when staying put actually is the right call, not just when it's time to move.