As at 5 September 2026, the Reserve Bank of Australia’s next Monetary Policy Board meeting is scheduled for 28–29 September, with the decision expected on 29 September at 2:30 pm AEST. The RBA has not confirmed a rate increase. However, NAB economists are tipping a possible 0.25 percentage point increase, which could take the cash rate from 4.35% to 4.60%.
That possibility deserves your attention now: not after the decision is announced.
I have spent more than two decades helping professionals, business owners, investors and self-employed Australians make informed lending decisions through changing economic conditions. One lesson has remained consistent: financial resilience is built before uncertainty becomes pressure.
If your loan is no longer competitive, or your circumstances have changed, waiting until after the September meeting could limit your options. Here are five steps I recommend taking now.
What could a September rate rise mean for your mortgage?
If lenders pass on a full 0.25 percentage point increase to variable home loans, repayments would rise. As an illustration, a $600,000 loan with 25 years remaining could cost approximately $91 more per month, depending on the interest rate, loan structure and lender.
That is not the only issue.
A higher cash rate can also affect:
- Household cash flow and monthly surplus
- Borrowing capacity for future purchases
- Investment property servicing calculations
- Business and commercial lending costs
- Refinance affordability assessments
- The pricing of fixed-rate and split-loan options
The important point is that a rate decision affects borrowers differently. A professional with PAYG income may be assessed very differently from a business owner with multiple entities or an investor with several properties.
Step 1: Review your current loan before 28 September
The first step is not automatically refinancing. It is understanding whether your current loan remains appropriate.
I recommend gathering:
- Your current interest rate
- Loan balance and remaining term
- Repayment amount
- Fixed-rate expiry date, if applicable
- Offset and redraw features
- Annual package or account fees
- Any potential discharge or break costs
- Your lender’s current retention or repricing offer
Many borrowers remain on a mortgage that was competitive several years ago but is now materially above the market. Others have changed jobs, purchased an investment property, become self-employed or experienced a major life transition since their original application.
Those changes may affect which lender and loan structure are now suitable.
A refinance should be assessed on the total financial outcome, not just the headline rate. I compare the likely interest saving against switching costs, fees, lost features and the impact on your long-term strategy.
You can also use a borrowing power calculator as an initial guide, although a personalised assessment is essential for complex circumstances.
Step 2: Stress-test your repayments and borrowing capacity
Before deciding whether to refinance, I recommend modelling at least three scenarios:
- Your current repayment at today’s rate
- Your repayment after a possible 0.25 percentage point increase
- Your repayment after a further potential increase later in the year
This is not about predicting the RBA perfectly. It is about understanding your financial margin.
For example, ask yourself:
- Would a $100 or $200 monthly increase affect your savings plan?
- Could you continue investing if your repayments increased?
- Would your business cash flow remain comfortable?
- Could you still manage school fees, medical expenses or renovations?
- Would your borrowing capacity reduce if lender assessment rates rose?
For professionals, particularly doctors, lawyers and medical specialists, income may be strong but financial commitments can also be substantial. HECS/HELP debt, private school fees, professional expenses, multiple properties or a recently established practice can all influence servicing.
For self-employed clients, taxable income may not tell the complete story. I may need to examine:
- Business financial statements
- Company and trust distributions
- Add-backs for legitimate one-off expenses
- Director wages and retained profits
- Recent management accounts
- BAS statements and activity trends
Investors face another layer of complexity. Rental income shading, vacancies, interest-only loans and multiple debt facilities can significantly affect the result.
Stress-testing gives you clarity before you commit.
Step 3: Identify the right refinance strategy: not just a lower rate
A lower interest rate can be valuable, but it is not always the most strategic outcome.
Depending on your goals, refinancing might help you:
- Reduce monthly repayments
- Access a more competitive variable rate
- Introduce or improve an offset facility
- Consolidate unsuitable personal debts
- Restructure lending across multiple properties
- Release equity for an investment purchase
- Separate private and investment debt more effectively
- Move from a rigid loan structure to a more flexible option
For property investors, the way debt is structured can affect future wealth creation. Simply combining facilities may create unnecessary complexity or make future tax and asset planning less efficient. I take a longer-term view, considering how the refinance could support your next purchase or portfolio objective.
For professionals, specialist lending policies may provide different treatment of income, LMI or borrowing capacity. The best lender for a standard PAYG borrower may not be the best lender for a medical specialist, barrister, practice owner or entrepreneur.
This is where working with an experienced mortgage broker in Sydney can save time and reduce unnecessary applications. My role is to assess the broader picture and identify lenders whose policies genuinely fit your situation.
Step 4: Prepare your documentation and submit early
A refinance is not completed simply because you have found a lower rate. The lender still needs to assess your application, verify your income and approve the security property.
Starting early gives you time to address issues such as:
- Missing tax returns or financial statements
- Unexplained account conduct
- Outdated identity documents
- High credit card limits
- Unresolved joint debts
- Valuation concerns
- Complex company or trust structures
- Delays in obtaining a loan discharge authority
Typical documents may include:
- Identification
- Current home loan statements
- Payslips or employment evidence
- Tax returns and notices of assessment
- Business financials for self-employed applicants
- Bank statements
- Details of credit cards and personal loans
- Rental statements and investment property information
If your application is straightforward, the process may be relatively smooth. If your income is complex, your loan is large or your finance involves multiple entities, additional time may be required.
That is why I would not recommend waiting until 29 September to begin. The meeting date is a deadline for action, not the ideal starting point.
Step 5: Make a decision based on resilience, not headlines
A rate prediction is not a guarantee. The RBA may hold, raise by 0.25 percentage points or make a decision that differs from current forecasts. Even if rates rise, lenders may respond differently through pricing, retention offers and product changes.
Your decision should therefore be based on your own financial position.
I help clients compare:
- The actual saving after all refinance costs
- Variable versus fixed or split-loan options
- Offset and redraw functionality
- Future borrowing capacity
- Investment and equity-release plans
- Tax and debt-structure considerations
- The risk of further rate movements
- Flexibility if income or family circumstances change
This is particularly important if you have recently separated, changed careers, returned to work after illness or rebuilt your finances following a major life event. I have written more about this in 5 Steps to Rebuild Your Borrowing Power After a Major Life Transition.
The goal is not to react emotionally to the next RBA announcement. It is to structure your lending so you can make decisions from a position of strength.
How the September decision may affect different borrowers
The same rate movement can have very different consequences.
Professionals
Professionals may have strong income but complex commitments, including HELP debt, partnership interests, professional loans or irregular bonuses. Specialist lender policy can be important, particularly when refinancing for a larger loan or preparing for another property purchase.
Self-employed borrowers
Business owners may face greater documentation requirements and more detailed income analysis. A refinance may still be achievable, but it should be structured around the lender’s treatment of company profits, trust distributions, add-backs and recent trading performance.
Property investors
Investors need to consider portfolio-wide cash flow rather than one loan in isolation. A higher rate can affect rental surplus, borrowing capacity and plans to acquire another property. Loan splits, interest-only periods, equity release and debt purpose should all be reviewed carefully.
Clients navigating separation or another major transition
A refinance may involve removing a co-borrower, restructuring joint debt or demonstrating newly stabilised income. Timing and documentation are critical. Applying with the wrong lender too early can create unnecessary complications.
Act before the September meeting
The RBA’s 28–29 September meeting may or may not result in a rate rise. But waiting for certainty can mean waiting until lenders are busy, processing times extend and your options become narrower.
I recommend taking these actions now:
- Review your current loan and rate
- Check your fixed-rate expiry and potential exit costs
- Stress-test repayments against a 0.25 percentage point increase
- Gather income and loan documentation
- Consider how refinancing fits your next three-to-five-year plan
- Obtain a strategic assessment before submitting an application
As a mortgage broker serving Sydney professionals, business owners, investors and clients with complex financial circumstances, I provide more than a rate comparison. I analyse the lending structure, identify the friction points and guide you towards a solution that supports long-term financial confidence.
If your mortgage needs a review before the September decision, contact me for a confidential discussion. The strongest refinance strategy is the one prepared before uncertainty becomes urgency.
