Has your home loan interest rate changed even though the Reserve Bank of Australia has not just announced a matching change to the cash rate? Home loan rates are influenced by the cash rate, but lenders also consider funding costs, market conditions, competition and their own pricing decisions.
If your lender changes your rate, it is worth understanding what you are paying and whether your loan remains competitive. Our home loan refinancing service explains how CBM Mortgages can help you review your existing loan and compare suitable alternatives.
A lender changing its rate does not automatically mean you should refinance. But it can be a sensible trigger to review your loan, ask your lender whether better pricing is available and compare your current deal with other suitable options.
Can lenders change home loan rates independently of the RBA?
Yes. The Reserve Bank cash rate is an important influence on Australian home loan rates, but it is not the only factor lenders consider when setting their lending rates.
The Reserve Bank of Australia explains that banks obtain funding from several sources, including customer deposits and debt issued in financial markets.
The cost of this funding is influenced by the cash rate and other market interest rates. Hedging costs and the mix of funding a bank uses can also affect its overall cost of providing loans.
This means movements in home loan rates do not always have to occur in exactly the same amount or at exactly the same time as a Reserve Bank cash-rate decision.
What determines my home loan interest rate?
Your home loan rate can be influenced by a combination of market, lender and borrower factors.
These may include:
- The RBA cash rate: monetary policy has an important influence on market interest rates and bank funding costs.
- Lender funding costs: lenders fund loans through sources including deposits and wholesale debt.
- Market reference rates: financial-market interest rates can influence the cost of bank funding.
- Competition: lenders can adjust pricing in response to competitors and the customers they are trying to attract or retain.
- Your loan-to-value ratio: the amount you owe compared with the property’s value can affect available pricing.
- Your loan type: owner-occupier, investment, principal-and-interest and interest-only loans can be priced differently.
- Your circumstances: your credit profile and other lending characteristics may affect the options and pricing available to you.
Moneysmart’s guidance on switching home loans notes that the RBA cash rate is not the only factor influencing home loan rates and that pricing may also be affected by factors such as a borrower’s creditworthiness, value to the lender and competition.
Does a lender have to pass on an RBA rate change?
A Reserve Bank cash-rate decision does not mean every lender must change every home loan rate by exactly the same amount.
Lenders set their own home loan pricing subject to the terms of their loan contracts and applicable laws and obligations.
The timing and size of lender rate changes can therefore vary.
That is one reason it can be useful to pay attention to the rate actually applying to your loan rather than assuming it remains competitive because you have not heard about a particular lender change.
If you do not know your current rate, our guide to checking your home loan interest rate explains where to find it and what information to have ready for a review.
How much difference can there be between home loan rates?
The difference between lenders and loan products can be meaningful.
Moneysmart reported in November 2026 that there could be a difference of more than 2 percentage points between variable home loan rates available in the market.
That does not mean every borrower will qualify for the lowest advertised rate. Eligibility, loan structure, property value, loan-to-value ratio and lender policies all matter.
But it does demonstrate why checking the market periodically can be worthwhile.
Our guide to comparing your home loan explains some of the factors to consider when deciding whether your existing loan remains competitive.
What should I do if my lender increases my home loan rate?
Start by confirming the new rate and what it means for your repayments.
Then consider the following steps:
1. Ask your existing lender for better pricing
Contact your lender and ask whether it can offer a more competitive interest rate.
Moneysmart recommends asking your lender for a better deal as one of the steps to consider before switching home loans. A lender may be prepared to adjust its pricing to retain your business.
2. Compare the overall loan
Do not compare interest rates alone.
Consider relevant fees, loan features, offset or redraw facilities, repayment flexibility and the remaining loan term.
3. Investigate refinancing
If your existing lender’s revised offer is not competitive, refinancing may be worth investigating.
Switching lenders can involve discharge fees, application or valuation costs where applicable and a new credit assessment, so any potential savings should be considered against the total cost of changing loans.
4. Check whether your circumstances have changed
Your income, expenses, loan balance, available equity or credit profile may have changed since your current home loan was approved.
Those changes may affect the lending options available today.
Should I refinance every time my interest rate increases?
No.
A rate increase can be a useful reason to review your home loan, but refinancing is not automatically the best response.
For example, your current lender may agree to better pricing when asked, or the cost of refinancing may outweigh the potential saving available from another lender.
The right comparison is therefore not simply:
“Which lender advertises the lowest rate?”
It is:
“Which suitable loan provides the right overall combination of rate, costs, features and structure for my circumstances?”
Why regularly reviewing your home loan matters
A home loan can remain in place for many years, while lender pricing and your financial circumstances can change considerably during that time.
A periodic review can help you understand:
- your current interest rate;
- whether better pricing may be available from your existing lender;
- how your rate compares with suitable alternatives;
- whether your loan features still meet your needs; and
- whether refinancing is worth investigating after allowing for switching costs.
You do not need to wait for an RBA announcement or a lender rate increase before reviewing your mortgage.
Frequently asked questions
Can my lender increase my home loan rate without an RBA rate rise?
Yes. The RBA cash rate is an important influence on home loan rates, but lenders also consider factors including funding costs, market interest rates, competition and their own pricing. Lender rate movements therefore do not always occur at exactly the same time or by exactly the same amount as an RBA cash-rate change.
Does my lender have to pass on an RBA cash-rate change?
A change in the RBA cash rate does not mean every lender must change every home loan rate by exactly the same amount. Individual lenders make their own pricing decisions subject to their loan contracts and applicable obligations.
What should I do if my home loan rate increases?
Check your new rate and repayments, ask your existing lender whether better pricing is available and compare the overall loan with suitable alternatives. If the existing loan is no longer competitive, refinancing may be worth investigating after considering switching costs.
Should I refinance whenever my lender raises my rate?
Not necessarily. Your lender may offer better pricing when asked, and refinancing can involve fees, costs and a new lending assessment. Compare the potential savings, costs, loan features and your circumstances before deciding.
Can CBM Mortgages check whether my home loan rate is competitive?
Yes. CBM Mortgages can review your existing home loan, compare suitable alternatives and help you understand whether negotiating with your existing lender or considering refinancing may be appropriate.
Has your home loan rate changed?
CBM Mortgages can review your current home loan, compare suitable alternatives and help you understand whether asking your lender for a better rate or considering refinancing could improve your position.
Disclaimer: This article provides general information only and does not constitute personal financial, legal, tax or credit advice. Interest rates, lender policies, fees and lending criteria can change. Consider your circumstances and obtain advice appropriate to your situation before changing a loan or applying for credit.
Written by Craig McDonald. Updated November 2026.
