Written by Satwinder Singh Mann, Credit Representative 540065. Last reviewed 29 October 2026.
Interest rates have risen again, and some homeowners are finding that moving to a cheaper loan is harder than they expected. Some can switch lenders and secure a better deal. Others struggle to qualify for refinancing even though they have never missed a repayment.
These borrowers are often called mortgage prisoners. They may be paying more interest than they need to because they can’t meet another lender’s borrowing requirements.
This guide explains how rate changes can affect mortgage prisoners in Australia, how the Australian Prudential Regulation Authority (APRA) serviceability buffer works, and what you can do about it.
Latest RBA decision
On 29 September 2026 the Reserve Bank of Australia (RBA) increased the cash rate target by 25 basis points to 4.60%. The RBA’s next decision is due on 3 November 2026. We update this box after each decision.
Read the RBA’s latest media release. Box last updated 29 October 2026.
How the RBA cash rate affects homeowners
Why does the cash rate matter?
The RBA sets the cash rate target to help manage inflation and economic activity. Changes to it influence funding costs across the banking system and can affect home loan interest rates.
When a lender raises its variable rate, repayments go up. By how much depends on your loan balance, interest rate, repayment type and remaining term. For a household on a tight budget, even a small increase can matter.
A further rise is never certain, so it’s better to follow official announcements than market predictions. The RBA publishes its cash rate and monetary policy updates on its website.
What the RBA says about household finances
The picture is mixed rather than alarming. In its Financial Stability Review released on 1 October 2026, the RBA said mortgage arrears remain low despite a recent pick-up. It also said most borrowers hold large offset and redraw balances, and that fewer than 1% of borrowers are in negative equity.
The same review noted that real household income per capita dipped slightly in the first half of 2026. So most households are coping, but budgets are tighter, and the borrowers with the fewest options feel it first. You can read the RBA Financial Stability Review for the full detail.
Why mortgage prisoners are more exposed
When a loan becomes expensive, most borrowers can compare other lenders. A mortgage prisoner may not be able to, because their income, expenses, debts or equity no longer meet another lender’s requirements.
A rate rise can make that worse. Repayments go up, spare income goes down, and the lower borrowing capacity that results makes it harder to move.
What is a mortgage prisoner in Australia?
A mortgage prisoner is generally a homeowner who can manage their current repayments but can’t refinance to a more suitable or cheaper loan.
That can happen even with a strong repayment history. Lenders assess a new application against their current criteria, not against the loan you were approved for years ago.
Common reasons include:
- Higher interest rates and stricter affordability assessments.
- Lower household income or higher living expenses.
- Credit card limits, personal loans or car finance.
- Falling property values or less equity than before.
- Changes in employment or personal circumstances.
- A fixed rate that has reverted to a higher variable rate.
Being a mortgage prisoner doesn’t mean you’re in arrears or at risk of losing your home. It means your refinancing choices are limited.
How does the APRA 3% serviceability buffer work?
APRA sets prudential standards for banks and other authorised deposit-taking institutions. One of them is the mortgage serviceability buffer. In its statement of 28 May 2026, APRA said the buffer “will remain at 3 percentage points”. In practice, banks generally assess new home lending at a rate at least 3 percentage points above the loan’s interest rate.
For example, if the loan rate is 6%, the standard assessment would use at least 9%. That doesn’t mean you’ll pay 9%. It’s a test of whether you could cope with higher repayments.
The buffer protects borrowers and the financial system. It can also make refinancing hard when your finances have weakened since the original loan was approved. Some non-bank lenders aren’t bound by APRA’s standards and may assess differently, which is one reason a comparison is worthwhile.
You can read APRA’s May 2026 statement on its website.
Do exceptions to lending policy exist?
The buffer isn’t reduced for individual borrowers. What APRA’s guidance describes is something different: a bank approving a loan that doesn’t meet its standard criteria. In a letter to banks dated 9 June 2023, APRA said these exceptions should be managed prudently and limited, and that refinancing loans should be assessed case by case. It said a lender could consider a borrower’s past repayment behaviour.
That is older guidance addressed to banks, and the decision always rests with the lender. Most applications that fail a serviceability test will not be approved, so don’t assume an exception will apply to you. You can read APRA’s 2023 letter for the detail.
What about fixed rate expiries?
Some borrowers fixed their rate when rates were much lower. When the fixed term ended, repayments rose, and a few found it hard to refinance at the same time. If you have a fixed term ending, look at your options several months ahead rather than in the final weeks.
How much could another rise cost?
How much a rate change costs you depends on whether your lender passes it on and how your loan is structured. This table shows the approximate monthly effect of a 0.25 percentage point increase.
| Loan balance | Repayment at 6.00% | Repayment at 6.25% | Monthly increase |
|---|---|---|---|
| $500,000 | $2,998 | $3,079 | $81 |
| $750,000 | $4,497 | $4,618 | $121 |
| $1,000,000 | $5,996 | $6,157 | $162 |
Illustration only. Assumes principal and interest repayments over 30 years, with the rate moving from 6.00% to 6.25%. Actual repayments vary by lender, loan structure and remaining term.
On a $750,000 loan, an extra $121 a month is around $1,450 a year. Some households can absorb that. For others it means less for groceries, utilities, transport and savings.
Other things that affect your options
Credit cards, personal loans and car finance can reduce your borrowing capacity. Even an unused credit card limit can count against you. Our blog on what reduces your home loan borrowing power explains how.
Property values matter too. If your home’s value falls while your balance stays the same, your loan-to-value ratio (LVR) rises, which can narrow your choice of lenders and products. If the property is worth less than the loan, you have negative equity. Neither outcome is certain when rates rise, but checking your position early lets you plan.
Refinancing options for mortgage prisoners
If you’re struggling to refinance, there may still be practical options. The right one depends on your circumstances, repayment history and the products available.
1. Ask your current lender for a better rate
Start with your existing lender and ask for a pricing review. Compare what other lenders are advertising so you know what to ask for. Useful questions:
- Is a lower rate available on my current loan?
- Can I move to another product without refinancing?
- What fees or conditions would apply?
- Would a change in structure affect my repayments?
A discount isn’t guaranteed. But a review costs little and can avoid the need to move your loan.
2. Compare other lenders
If your lender can’t help, other lenders may assess your situation differently. Some non-bank and specialist lenders have different credit policies, though they can also charge higher rates or fees.
A mortgage broker can compare options across the lenders on their panel and check whether your income, expenses, debts and property fit a lender’s criteria before you apply. There is no guarantee of approval, and every lender must assess the application against its own criteria and its responsible lending obligations.
3. Review your debts and budget
Before you lodge several applications, get your own position clear:
- List your home loan, personal loans, car finance and credit card limits.
- Review your regular spending and the costs you could reasonably reduce.
- Check that your income and employment details are up to date.
- Check your credit report for errors.
- Talk to a mortgage broker about suitable options before you apply.
Reducing debts or unused credit limits may improve your borrowing position. Don’t close accounts or make big financial changes without thinking through the effect on your situation. A clear budget also shows whether refinancing would save you money after fees and other costs.
Having your paperwork ready helps too. Our home loan documents checklist lists what lenders commonly ask for.
4. Contact your lender if repayments become unaffordable
If you’re worried about missing repayments, contact your lender’s hardship team as early as you can. You don’t need to be behind first. Explain what has changed, what you can afford and how long you expect the difficulty to last.
Depending on your circumstances, a lender may consider:
- Temporarily reducing or pausing repayments.
- Extending the loan term.
- Agreeing to a payment plan.
- Changing the loan arrangements for a period.
These can give you breathing space, but they may increase the total interest you pay or lead to higher repayments later. Read the terms before you accept. The Australian Government’s Moneysmart guide to problems paying your mortgage explains the process. You can also call the National Debt Helpline on 1800 007 007 for free, independent financial counselling.
How to prepare for the next rate decision
You can’t control what the RBA decides, but you can prepare for either outcome.
Check your current rate, repayments and remaining term. Check whether a fixed term is ending or any fees would affect your options. Then test your budget against a repayment increase. Even if rates hold, you’ll know your limits.
If something looks tight, get advice before it becomes urgent. More time means more options.
Frequently asked questions
What is a mortgage prisoner in Australia?
A homeowner who can’t refinance to a more competitive loan, even though they may be meeting their repayments. They might fail another lender’s serviceability assessment because of income, expenses, debts, equity or current lending criteria.
How does an RBA rate rise affect mortgage prisoners?
A rise can lead lenders to increase variable rates and repayments. Mortgage prisoners may have fewer chances to offset that by moving to another lender.
Can I refinance if I fail the standard serviceability test?
Sometimes, but not often. Some lenders assess differently, and a few may consider limited exceptions in particular circumstances. Most applications that fail the test are not approved, and any application must meet the lender’s requirements and its responsible lending obligations.
Does the 3% serviceability buffer apply to every borrower?
It is a general requirement for banks assessing new home lending. Some non-bank lenders assess differently. It’s a test, not an extra charge on your actual mortgage.
What should I do if I can’t afford my repayments?
Contact your lender’s hardship team straight away and explain your situation. Ask what arrangements are available and agree only to payments you can reasonably manage. Free counselling is available through the National Debt Helpline on 1800 007 007.
Can my lender reduce my rate without refinancing?
It may offer a discount or let you switch to another product it offers. That depends on its policies and your circumstances, so ask about fees, eligibility and any change to your loan features.
Should I wait for the next RBA decision before reviewing my loan?
Not necessarily. Reviewing your loan now shows you your budget and options, so you can respond calmly whatever the decision is.
Talk to an Adelaide mortgage broker
You don’t have to wait until repayments become hard to manage. If your fixed term is ending, or you’ve been told you can’t refinance, it’s worth a conversation. We can review your current loan, explain what lenders look for and talk through options across the lenders on our panel.
Call Satwinder on 0431 955 262, email mannss@niftylending.com.au or send us a message to arrange a time to talk.
Navigating. Leading. Supporting.
General information only. This article is not personal financial, credit, legal or tax advice and does not take your objectives, financial situation or needs into account. Your circumstances may vary. Interest rates, lending criteria, government policy and APRA requirements change. The examples are illustrations and do not guarantee savings, refinancing eligibility or loan approval. All credit applications are subject to lender assessment and approval, and refinancing may involve fees and other costs. Nifty Lending Services. Satwinder Singh Mann is a credit representative 540065 of RED ROCK BROKERS GROUP PTY LTD ABN/ACN 40 149 728 030, Australian Credit Licence 405961.
