Do you know when refinancing actually saves money?

Refinancing to a lower rate works when the monthly savings outweigh the switch costs

Refinancing your mortgage to access a lower interest rate makes financial sense when the monthly interest savings exceed the costs of switching lenders. Those costs typically include application fees, valuation fees, and potential discharge fees from your current lender, which can total anywhere from $1,000 to $3,000 depending on your situation.

The calculation changes if you're currently on a fixed rate. Breaking a fixed rate loan early can trigger break costs that range from a few hundred dollars to tens of thousands, depending on how much rates have moved since you locked in. If you're still within a fixed rate period, you'll need to request a break cost estimate from your current lender before you can assess whether refinancing makes sense.

Consider a borrower in Parramatta with $550,000 remaining on their home loan. They're paying 6.2% on a variable rate, while new customers at other lenders are accessing rates closer to 5.8%. The difference is around $120 per month. If the cost to refinance is $2,500, they'd recover that within 21 months and then continue saving beyond that point. Over five years, the accumulated saving would be several thousand dollars, assuming rates remain relatively stable.

Fixed rate expiry is the most common trigger for refinancing

When your fixed rate period ends, your loan typically reverts to your lender's standard variable rate, which is often higher than the rates offered to new customers. Lenders price their retention rates differently to their acquisition rates, and many borrowers find themselves paying 0.3% to 0.8% more than they need to once their fixed term expires.

If your fixed rate is ending soon, you have three options: stay with your current lender on their revert rate, negotiate a new rate with your current lender, or refinance to a new lender. The third option often delivers the most significant rate reduction, but it depends on your loan size and how much effort you're willing to put into the process.

A borrower in Ryde with $480,000 owing came off a three-year fixed rate at 2.1% and reverted to a variable rate of 6.4%. Refinancing to a new lender at 5.9% reduced their monthly repayments by roughly $130. Over the remaining loan term, that rate difference compounds into substantial interest savings, even after accounting for the upfront costs of switching.

Rate differences below 0.3% rarely justify refinancing on rate alone

If the rate difference between your current loan and what's available elsewhere is less than 0.3%, the cost of refinancing usually outweighs the monthly savings unless your loan balance is particularly high. A 0.2% reduction on a $400,000 loan saves around $67 per month, which means you'd need more than a year just to recover typical switching costs.

That doesn't mean you should ignore smaller rate differences altogether. If a new loan also offers features your current loan lacks, such as an offset account, redraw facility, or the ability to make extra repayments without restrictions, those features can deliver value beyond the interest rate itself. An offset account linked to your mortgage can function like a rate reduction by reducing the interest charged each day, depending on the balance you maintain.

In our experience, borrowers who refinance for reasons beyond rate alone tend to be more satisfied with the outcome. A lower rate combined with improved loan flexibility or the ability to consolidate other debts into the mortgage can improve cashflow and make the loan more practical to manage over time.

Refinancing to access equity requires careful loan structuring

Some borrowers refinance not just for a lower rate but to access equity in their property for purposes such as investment, renovations, or debt consolidation. This is often referred to as a cash-out refinance. The equity you can access depends on your current loan-to-value ratio, your borrowing capacity, and the lender's serviceability assessment.

If you're looking to access equity, the refinance process involves a new property valuation, a full credit assessment, and documentation of your income and expenses. Lenders will assess whether you can service the higher loan amount at the new rate, often using a buffer of around 3% above the actual rate to ensure you can still afford repayments if rates rise.

Structuring the loan correctly is important. If you're accessing equity to purchase an investment property, keeping the investment portion of the loan separate from your owner-occupied debt makes tax reporting more straightforward. Your mortgage broker can help structure the split so that the interest on the investment portion remains deductible while keeping your owner-occupied loan on the most suitable rate and features.

Your current lender may match the rate without requiring a full refinance

Before committing to a full refinance application, it's worth approaching your current lender to see if they'll reduce your rate. Some lenders have retention teams that can offer discounts to borrowers who indicate they're considering leaving. The discount won't always match what's available elsewhere, but if it comes close, staying with your current lender avoids the time and cost of switching.

The retention rate you're offered will depend on your loan size, loan-to-value ratio, and repayment history. Borrowers with larger loans and lower LVRs tend to have more negotiating power. If your lender offers a reduction that brings your rate within 0.1% to 0.2% of what you could access elsewhere, it's often more practical to accept it rather than refinance, particularly if you're happy with your current loan features.

That said, not all lenders negotiate. Some have rigid pricing structures and won't offer meaningful discounts even when you present evidence of lower rates elsewhere. If your lender won't move on rate and the difference is material, refinancing becomes the more logical path.

A loan review should happen every one to two years

Mortgage rates and loan features change frequently, and what was a suitable loan two years ago may no longer be the most appropriate option for your circumstances. A regular loan health check helps identify whether you're still on a rate that reflects the current market and whether your loan structure aligns with your financial goals.

In greater Sydney, where property values and market conditions shift across different areas, your equity position and borrowing capacity can change significantly over time. A loan review takes into account your current balance, the features you're using, and whether refinancing or restructuring could improve your position. It's not about refinancing for the sake of it, but about ensuring your mortgage works as efficiently as possible.

If you've been with the same lender for more than three years and haven't reviewed your loan, there's a reasonable chance you're paying more than you need to. Even if you don't refinance, understanding where you sit relative to the market gives you the information you need to make an informed decision about whether to stay or switch.

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