Most borrowers refinance one of two ways: they stumble into it after a friend mentions their new rate at a barbecue, or they never do it at all. Neither is a strategy. The right time to refinance is defined by a small set of objective triggers — not market sentiment, not RBA headlines, not waiting for the "perfect" rate. Here's how to read them.
5 Triggers That Tell You It's Time to Refinance
1. Your Rate Gap Is 0.5% or More
This is the most common and most important trigger. If the best rate available for your loan profile is 0.5% or more below your current rate, the maths almost always favour switching. On a $600,000 loan, a 0.5% difference is roughly $167 per month — that's $2,000 a year, and switching costs are typically recovered in under 9 months.
The gap is often larger than people expect. Australia's major lenders routinely charge existing customers 0.4–0.8% more than their advertised new-customer rates. This "loyalty tax" accumulates silently. The first step is knowing your current rate; the second is comparing it against live offers. Our refinance home loan page shows what's available right now by loan size and LVR.
Quick Rate Gap Check
Find your current rate on your loan statement or internet banking. Then use our mortgage repayment calculator to model what your repayments would be 0.5% lower. The monthly saving tells you almost everything you need to know about whether to proceed.
2. Your Fixed Rate Is Expiring in the Next 3–6 Months
When a fixed rate term ends, your loan automatically rolls to the lender's standard variable rate — which is almost always higher than what you could get by shopping around. The window between 3 and 6 months before expiry is the optimal time to start a refinance, because the new loan needs time to settle and you want it to land close to your expiry date (avoiding break costs).
If your fixed rate was set in 2021 or 2022 during the historic low-rate period, your revert rate is likely significantly higher than current market. Don't wait for the expiry letter — by then, you're already on the back foot.
3. Your Equity Has Hit a New LVR Tier
Lenders price risk in tiers — typically at 80%, 70%, and 60% LVR (loan-to-value ratio). Crossing each threshold makes you eligible for a lower rate tier. If you bought with a 10–15% deposit and have been paying down principal for 3–5 years, or if your property value has increased, you may have crossed into a better tier without realising it.
- Below 80% LVR — LMI no longer applies; many lenders offer sharper rates
- Below 70% LVR — "premium" rate tiers at most major lenders
- Below 60% LVR — best available pricing; some lenders offer further rate reductions
A free property valuation (which lenders conduct during any refinance assessment) will confirm your current LVR. If you're close to a tier — say, at 82% — it may be worth asking whether paying down a small lump sum would tip you over before settling.
4. Your Financial Situation Has Improved
If your income has grown substantially since you took out the loan, your debt-to-income ratio has improved — which means lower risk in a lender's eyes and potentially access to products that were out of reach before. Similarly, if you've paid off personal debts or credit cards since your original application, your serviceability assessment will look very different today.
This is also the trigger for self-employed borrowers who took a low-doc loan initially. Two strong tax returns later, you may now qualify for a full-doc product at a standard rate — and the difference can be substantial.
5. Your Loan Features No Longer Fit Your Life
Rate isn't the only reason to refinance. Many borrowers stay in loans that no longer serve their needs because they haven't revisited the structure. Common mismatches include:
- No offset account — you have savings sitting in a separate account earning less than your mortgage rate
- Interest-only term expiring — the repayment jump to P&I can be softened by refinancing to a new IO product or a lower-rate P&I loan
- Need to access equity — for a renovation, investment property deposit, or business — and your current lender's equity release terms are poor
- Adding or removing a borrower — after marriage, separation, or a change in ownership structure
5 Situations Where You Should Wait
1. You're Mid Fixed-Term with Meaningful Break Costs
Break costs can neutralise years of rate savings. Before assuming refinancing makes sense, request a written break cost quote from your lender — it takes one phone call. If break costs exceed 12 months of projected savings, the case for waiting until expiry is usually stronger. If rates have risen since you fixed, break costs are often zero or minimal (since the lender can re-lend the money at a higher rate).
2. You're Planning to Sell Within 12 Months
Switching costs $1,000–$2,000 and takes 4–6 weeks. If you're selling within the year, the break-even analysis rarely stacks up — especially if you'll then need to take out an entirely new loan on your next purchase anyway.
3. You Have a Major Credit Application Coming Up Soon
Refinancing adds one credit enquiry to your file. If you're about to apply for a business loan, car finance, or another property within the next 3 months, the timing matters. Each enquiry is small on its own, but multiple hard pulls in quick succession can affect assessments. Coordinate the sequence with your broker.
4. Your Loan Has Less Than 5 Years Remaining
In the final years of a P&I loan, your monthly payment is almost entirely principal — very little interest remains. The financial benefit of a lower rate at this stage is small, and switching costs can eat most of it. The exception is if you're also looking to access equity or extend the term.
5. The Rate Gap Is Under 0.3%
On most loan balances under $800,000, a sub-0.3% rate gap produces monthly savings that make the break-even period too long to be worth the administrative burden. Your time is better spent negotiating a rate reduction with your existing lender — which often works and costs nothing. Call the retention team (not the general line), mention you've received a competitive offer, and ask them to match it.
The Annual Rate Check Rule
Set a calendar reminder once a year. Pull out your mortgage statement, find your interest rate, and compare it against current market rates for your LVR. This 15-minute exercise every 12 months is what separates borrowers who pay $40K less interest over their loan life from those who don't. You don't need to refinance every year — but you need to know whether you should.
Is Now the Right Time for You?
We'll run through all 5 triggers against your current loan and tell you honestly whether refinancing makes sense — plus what you'd save if it does.
No obligation. Free 10-minute broker call.
The 3-Step Rate Review Process
If you've identified one or more of the five triggers above, here's the most efficient way to act on it — without wasting time on applications that go nowhere.
Step 1: Get Your Current Position Clear (10 Minutes)
- Your current interest rate (check your last statement or internet banking)
- Your outstanding loan balance
- Your property's approximate current value (use a free online estimate — Domain or CoreLogic)
- Your remaining loan term
- Whether you're in a fixed or variable period (and if fixed, when it expires)
Step 2: Get a Live Comparison (One Call)
A broker comparison across 30+ lenders takes about 20 minutes by phone and tells you precisely what rate you qualify for at your current LVR and loan size. You'll walk away knowing: your best available rate, your monthly saving, your break-even period, and whether there are better features (offset, flexibility) available. Read our article on how much you could save by switching to understand what these numbers typically look like for your loan size.
Step 3: Negotiate Before You Commit
Armed with a live competitive offer, call your current lender's retention team and ask them to match it. This works more often than people expect — lenders typically have a discretionary rate discount of 0.2–0.4% they can offer without you needing to formally switch. If they match, great — you've just saved money with zero admin. If they don't match (or only partially match), you have everything you need to proceed with the refinance. Our 2026 refinance decision checklist walks through this exact negotiation process step by step.
Timing Refinance Around RBA Decisions
A common question is whether to wait for the next RBA cash rate cut before refinancing. The practical answer: don't wait. Here's why.
- Variable rate reductions after RBA cuts typically take 2–4 weeks to flow through to existing customers
- New-customer rates are already priced at or below the expected rate trajectory — lenders compete on future rate expectations, not just the current cash rate
- If you refinance today and rates fall further, your new lender's variable rate will also fall — you benefit either way
- The interest you're overpaying while waiting is a real, ongoing cost
The one exception is if you're very close to the end of a fixed term and an RBA cut is expected within 1–2 months — in that case, the timing of your revert may be worth coordinating. A broker can model this for you in minutes.
What About Whether to Fix or Go Variable?
When you refinance, you'll need to decide on your loan structure — whether to lock in a fixed rate, go variable, or split. This is a separate but related decision that depends entirely on your income stability, plans for the property, and view on rate movements. Our fixed vs variable comparison for 2026 breaks down the trade-offs in detail — it's a useful companion read before committing to a new structure.
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