Refinancing · May 2026
When Should You Refinance Your Home Loan? The Real Numbers — Including All the Fees
Every year, thousands of Australian borrowers refinance for a 0.1% rate saving and wonder why they feel underwhelmed by the result. A 0.1% rate reduction on a $500,000 loan saves you $500 per year — $41 per month. After paying $800–$1,500 in refinancing fees, you're looking at a 2–3 year break-even. If you're chasing every small rate movement, you're likely spending more on transaction costs than you're saving on interest. Here's how to think about refinancing properly.
The Maths on Small Rate Differences: Worked Examples
Let's make this concrete. These examples use a standard variable P&I loan and assume 25 years remaining.
Rate saving: 0.1% | Loan: $500,000
Annual interest saving: $500
Monthly saving: $41.67 — roughly one dinner out
Typical refinancing costs: $800–$1,500
Break-even: 20–36 months — and that's before the next rate change
Rate saving: 0.3% | Loan: $700,000
Annual interest saving: $2,100
Monthly saving: $175
Typical refinancing costs: $800–$1,500
Break-even: 5–9 months — clearly worth doing
Rate saving: 0.5% | Loan: $900,000
Annual interest saving: $4,500
Monthly saving: $375
Typical refinancing costs: $1,000–$1,800
Break-even: 3–5 months — a no-brainer
The conclusion: for most borrowers, a rate improvement below 0.2% rarely justifies the effort and cost unless the loan is very large (>$1M). The sweet spot is 0.3% or more — at that point, break-even is typically under 12 months and the long-term benefit is substantial.
Every Fee Involved in Refinancing — Itemised
Before refinancing, tally up the actual costs. Many borrowers are surprised by how quickly they add up.
Typical refinancing cost breakdown (NSW, variable rate loan)
Discharge fee (current lender): $150–$400. Charged by your existing lender to close the loan and release the security. Some lenders waive this as a retention gesture if you threaten to leave.
NSW mortgage discharge registration: ~$130. Government fee to remove the old lender's mortgage from the property title.
NSW mortgage registration (new lender): ~$130. Government fee to register the new lender's mortgage on title.
Application / establishment fee (new lender): $0–$600. Many lenders waive this; some package products charge $150–$600. Often negotiable or part of a cashback deal.
Valuation fee: $0–$500. Most lenders absorb the cost of their own valuation, but some pass it on for larger loans or unusual properties.
Legal/settlement fee: $150–$400. Some lenders use their own solicitors and charge this; others include it.
Total typical cost range: $600–$1,800 for a standard variable rate refinance in NSW with no cashback offer. On a competitive cashback deal ($2,000–$4,000 from the new lender), the net cost can be negative — i.e., the lender pays you to refinance, while also offering a better rate.
Break Costs: The Hidden Cost of Leaving a Fixed Rate Early
If you're on a fixed-rate loan and break before the end of the fixed period, you face a break cost — and it can be enormous. The bank calculates what it will lose by releasing you from the fixed contract early, based on the difference between your contracted rate and the current wholesale rate for the remaining term.
Example: Fixed rate break cost
Loan: $600,000 | Fixed rate: 5.80% | 2 years remaining
Current 2-year wholesale rate: 5.20% (rates have fallen)
Rate differential: 0.60%
Estimated break cost: $600,000 × 0.60% × 2 = ~$7,200
In practice, break costs are calculated by bank treasury teams and the exact formula isn't disclosed — but the above illustrates the order of magnitude. During the 2023-2024 rate hiking cycle, borrowers who wanted to exit fixed rates faced break costs of $5,000–$20,000+. This effectively trapped them in their existing loan. Always check your break cost estimate (lenders must provide it on request) before deciding to refinance a fixed loan.
When Refinancing IS Genuinely Worth It
Your rate has drifted above market by 0.3%+ (the "loyalty tax"). This is the most common scenario. Lenders routinely offer lower rates to new customers than to loyal existing customers. If you've been with the same lender for 3+ years without ever threatening to leave or requesting a review, there's a good chance you're paying 0.3%–0.8% above what that same lender would offer a new customer today.
Your property value has grown significantly. If you bought at 90% LVR and your property has appreciated, you may now be sitting at 75% LVR. At lower LVR, you qualify for better rate tiers. Refinancing to access those tiers — combined with a better product — can produce savings well above the one-off refinance cost.
You need to release equity. If your property has grown in value and you want to access the equity (for a renovation, investment property deposit, or other purpose), refinancing is the vehicle — and you'd be doing it regardless. Getting a better rate at the same time makes it even more worthwhile.
Your current loan lacks key features. No offset account, poor redraw terms, or restrictions on extra repayments — these have an economic cost. A loan with a full 100% offset on a $500,000 balance with $50,000 in offset saves approximately $3,000 per year in interest at 6.0%. If your current loan doesn't have offset and a comparable rate + offset loan is available, the feature itself justifies the switch.
When Refinancing Is NOT Worth It
You're within 5 years of paying off the loan. The total interest remaining on a $500,000 loan with 4 years left is relatively small. A 0.4% rate saving on that amount over 4 years saves approximately $8,000 — meaningful, but the disruption of refinancing may not be warranted depending on your loan balance.
You're mid-fixed-rate term with a meaningful break cost. Run the numbers. If the break cost is $8,000 and the new variable rate saves you $3,500 per year, break-even is 2.3 years. Whether that's worth it depends on whether you plan to stay in the property and how rates are expected to move.
Your income or credit profile has changed for the worse. Refinancing requires a new credit assessment. If your income has decreased, you've taken on significant new debt, or you've had late payment marks on your credit file, you may not qualify for the advertised product — or you may qualify but not at the rate you were targeting.
The Annual Review: Your Refinancing Baseline
The best approach isn't to chase every rate movement — it's to run an annual review that looks at the complete picture: your current rate vs market, your LVR now vs original, cashback opportunities available, and any features you're not using. Bridge Finance provides this review to every client as a standard part of the ongoing relationship. Most clients who come to us after 3+ years with their original lender leave with a material improvement — not because they chased a marginal rate, but because the market had moved and no one had told them.
About the Author
William Zhu
Director, Bridge Finance. 8 years of mortgage broking + 5 years in construction. $600M+ settled. Access to 70+ lenders. MFAA member.
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© 2026 Bridge.Finance Pty Ltd ATF Zhu Family Trust. Credit Representative 567817 of Australian Credit Licence 384704. MFAA Member. AFCA Member.
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