Mortgage Serviceability in 2026

Why Waiting Could Lock You Out of Your Own Loan

The Sydney property market has always required a fair level of strategic insight to navigate well but in April 2026, the assumptions around borrowing power were seriously challenged.

With Westpac’s Chief Economist recently forecasting a further three rate rises this year, we are staring down the barrel of a cash rate not seen since the Global Financial Crisis (GFC). For many Sydney homeowners the focus has shifted from looking for the best rate to understanding “How much will the bank let me borrow and can I still move?”

At Mortgage Navigators, we are seeing a squeeze on serviceability which is making it harder for homeowners to refinance. Those who are not positioning themselves for what’s next risk being locked in to their current lender as borrowing capacity shrinks with every rate hike.

Borrowing Power Shifts to Capacity

As interest rates climb toward GFC-era levels, every homeowner’s borrowing capacity, the total amount a lender is willing to lend drops significantly. Even if their financial situation has not changed, the bank’s stress test and the buffer they add to current rates has become a noticeable hurdle.

The Challenge With Refinancing

If the three rate rises predicted by Westpac come to fruition, the cost of servicing a loan in Sydney will hit a 15-year high. New buyers will feel the effects most acutely but it impacts every borrower’s ability to refinance to a better deal. When rates go up, serviceability goes down, potentially trapping your loan with a lender who is no longer competitive.

Understanding the Lender Buffer

While the big banks have strict serviceability rules, there are more options available if you know where to look. Mortgage Navigators has built long standing relationships with a broad panel of lenders who offer a range of product options, including reduced serviceability buffers for refinancers.

Traditional Banks may test your ability to pay at a 3% buffer above your actual rates.

Increased Flexibility and Savings

To help our clients navigate this volatile period, Mortgage Navigators has renewed focus on finding the right refinance options for customers commencing this April.

Some lenders offer “Cash Back” deals only if you move to them. The beauty of being an independent mortgage broker is we can do things differently. If you settle a refinance application through us this month, we will provide a refinance rebate to to offset some of your costs, regardless of the lender and in addition to any lender cashbacks available.

Checklist to Boost 2026 Serviceability

Before we run a Borrowing Power Review, follow these steps to ensure you’re presented in the best light to new lenders:

• Audit available credit: Look at any unused credit card limits and Buy Now, Pay Later (BNPL) accounts. Even an unused $10k credit card limit can slash your borrowing power by $40k+
• Living Expense Review: Lenders are scrutinising living expenses more than ever. Review your living expenses to identify any unnecessary spending, especially especially luxuries and dining out along with unused subscriptions or opportunities to review insurances, utilities and other commitments for a better deal

Review Your Tax Structure: For investors, ensure your tax-deductible expenses are optimised. A slight tweak in how your rental income is viewed can be the difference between the right loan and missing out

Take Control Before the Next Rise: Request Your Review

Don’t wait for the next RBA meeting to find out you’ve been locked out of a better mortgage.

For the month of April only, Mortgage Navigators is offering a Personalised Borrowing Power Review. We will simulate your capacity against current and forecasted rates, identify lenders with the right solution for you and apply our Refinance Rebate to your application.

Ready to see where you stand? Get in touch with our expert team today and get your finances in shape for whatever comes in 2026.

*For refinance applications submitted from 20 April 2026 to 31st May 2026. Speak to Mortgage Navigators for full terms & conditions.