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CommBank's New Serviceability Buffer: What It Means for Refinancers

Understanding the Impact of CommBank's Reduced Serviceability Buffer on Your Refinancing Options

CommBank's New Serviceability Buffer: What It Means for Refinancers?w=400

The information on this website is general in nature and does not take into account your objectives, financial situation, or needs. Consider seeking personal advice from a licensed adviser before acting on any information.

In a significant move aimed at facilitating the refinancing process for homeowners, Commonwealth Bank of Australia (CommBank) has announced a reduction in its serviceability buffer for eligible refinancers.
Effective from 23 June 2026, the bank will assess refinancing applicants with a 1% buffer, a notable decrease from the industry standard of 3%.

This adjustment means that borrowers seeking to refinance to a loan with an interest rate of 5.5% per annum will now be assessed at a rate of 6.5%, rather than the previous 8.5%. This change is designed to make it easier for homeowners to qualify for refinancing, potentially leading to lower monthly repayments and better loan terms.

It's important to note that this reduced buffer applies exclusively to refinancing applications. New home loan applicants will continue to be assessed with the standard 3% buffer to ensure they can manage potential future interest rate increases.

While this move by CommBank aims to provide relief to existing borrowers, the Australian Prudential Regulation Authority (APRA) has emphasized the need for prudence. APRA advises that any changes to serviceability assessments should still align with the core intent of credit risk management guidelines. The serviceability buffer serves as a safeguard against potential rises in interest rates and unforeseen changes in a borrower's financial situation.

For homeowners considering refinancing, this development presents an opportunity to reassess their current mortgage terms. By taking advantage of the reduced serviceability buffer, borrowers may find it more feasible to switch to loans with more favorable conditions, thereby enhancing their financial stability.

As always, it's advisable for borrowers to consult with financial advisors or mortgage brokers to fully understand the implications of refinancing under these new conditions and to ensure that any decisions align with their long-term financial goals.

Published:Saturday, 13th Jun 2026
Author: Paige Estritori

Please Note: We do not endorse any specific products or companies. Some content is sourced from third parties, including press releases, and may not be independently verified for accuracy or completeness.

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Hailey Thompson 14 Jun 2026

Being assessed at 6.5% instead of 8.5% on a 5.5% loan could make a real difference for people stuck with their current lender, but I’d be keen to know whether other banks are likely to follow or if this stays a CommBank-only thing for refinancers.

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A measure of a company’s financial leverage, calculated by dividing its total liabilities by stockholders’ equity.