Borrow
Last of the big four cuts rates to undercut peers
NAB has updated its mortgage serviceability assessment policy, becoming the final big four bank to amend its policy in response to APRA’s new guidance.
Last of the big four cuts rates to undercut peers
NAB has updated its mortgage serviceability assessment policy, becoming the final big four bank to amend its policy in response to APRA’s new guidance.

National Australia Bank (NAB) has lowered its interest rate floor to 5.5 per cent and increased its interest rate buffer to 2.5 per cent, effective for all new home loan applications from 5 August.
The bank’s announcement has seen it undercut its major competitors, CBA and Westpac, which only dropped their rates to 5.75 per cent.
The new NAB rate floor aligns with ANZ’s announcement that it was lowering its rate floor to 5.5 per cent.
As it stands, Macquarie has the lowest floor rate (5.3 per cent), with MyState on the opposite side of the spectrum, dropping its floor rate to just 6.2 per cent.

The revisions have been in response to the Australian Prudential Regulation Authority’s (APRA) changes to home lending guidance, in which the authority scrapped the 7 per cent interest rate floor for mortgage assessments and increased the buffer rate to 2.5 per cent.
Commenting on the changes, NAB’s chief customer officer for consumer banking, Mike Baird, told Nest Egg’s sister publication, The Adviser, that “NAB welcomes the updated APRA guidelines on home lending serviceability”.
“We believe now is the right time to change the approach to how the affordability rate floor is determined, given the continuing low interest rate environment,” he said.
Mr Baird added, “As a responsible lender, serviceability is assessed using a number of factors and we consider all lending applications on a case-by-case basis.”
NAB is the latest lender to amend its serviceability policy, joining the likes of ANZ, Westpac, the Commonwealth Bank, Macquarie, Suncorp, MyState Bank, Bendigo and Adelaide Bank, the Bank of Sydney, and Auswide Bank.
About the author

About the author


Banking
PayPal Open Debuts in Australia: A Unified Platform for Business Growth
Sydney, 14 October 2025 – In a significant move to bolster commerce capabilities for businesses across Australia, PayPal has officially launched its new merchant platform, PayPal OpenRead more

Banking
RBA holds interest rates steady at 3.6% amid strong labour market and inflation concerns
In a widely anticipated move, the Reserve Bank of Australia (RBA) announced that it would maintain the cash rate at 3.6%. The decision was unanimous, reflecting a cautious approach as the central bank ...Read more

Banking
Hardship is the new conduct frontier: A bank’s playbook for turning ASIC scrutiny into ROI
ASIC has put financial hardship on its 2025 enforcement radar, shifting lender performance from a customer service problem to a board-level conduct risk. This case study examines how an Australian ...Read more

Banking
RBA flags price uplift as Home Guarantee expansion accelerates: what it means for banks, builders and the bottom line
Australia’s expanded Home Guarantee Scheme (HGS) has been brought forward to 1 October, compressing a multi‑year policy shift into weeks. The RBA expects the changes to lift borrowing capacity and add ...Read more

Banking
ASIC's crackdown on private credit sector gains support from industry veteran
In the wake of the Australian Securities and Investments Commission's (ASIC) recent regulatory actions, Richard Woodhead, Founder and Managing Director of GPS Investment Fund, has voiced strong ...Read more

Banking
Why central banks are ditching Treasuries for gold and what it means for business leaders
Gold’s renaissance is no longer just an investor narrative; it’s a reserve‑management strategy. Multiple reports indicate central bank gold holdings now exceed US Treasuries by value for the first ...Read more

Banking
AMP Bank GO strengthens fraud protection with innovative security measures
AMP Bank GO has emerged as a formidable player in the fight against financial fraud, with its innovative security measures setting new standards in the digital banking sector. Since its launch in ...Read more

Banking
APRA’s hybrid exit is a A$43bn catalyst: who captures the flow—bank credit or private credit?
Australia’s phase-out of bank hybrids isn’t just a regulatory clean-up—it’s a forced portfolio reallocation the size of a mid-tier super fund. Read more

Banking
PayPal Open Debuts in Australia: A Unified Platform for Business Growth
Sydney, 14 October 2025 – In a significant move to bolster commerce capabilities for businesses across Australia, PayPal has officially launched its new merchant platform, PayPal OpenRead more

Banking
RBA holds interest rates steady at 3.6% amid strong labour market and inflation concerns
In a widely anticipated move, the Reserve Bank of Australia (RBA) announced that it would maintain the cash rate at 3.6%. The decision was unanimous, reflecting a cautious approach as the central bank ...Read more

Banking
Hardship is the new conduct frontier: A bank’s playbook for turning ASIC scrutiny into ROI
ASIC has put financial hardship on its 2025 enforcement radar, shifting lender performance from a customer service problem to a board-level conduct risk. This case study examines how an Australian ...Read more

Banking
RBA flags price uplift as Home Guarantee expansion accelerates: what it means for banks, builders and the bottom line
Australia’s expanded Home Guarantee Scheme (HGS) has been brought forward to 1 October, compressing a multi‑year policy shift into weeks. The RBA expects the changes to lift borrowing capacity and add ...Read more

Banking
ASIC's crackdown on private credit sector gains support from industry veteran
In the wake of the Australian Securities and Investments Commission's (ASIC) recent regulatory actions, Richard Woodhead, Founder and Managing Director of GPS Investment Fund, has voiced strong ...Read more

Banking
Why central banks are ditching Treasuries for gold and what it means for business leaders
Gold’s renaissance is no longer just an investor narrative; it’s a reserve‑management strategy. Multiple reports indicate central bank gold holdings now exceed US Treasuries by value for the first ...Read more

Banking
AMP Bank GO strengthens fraud protection with innovative security measures
AMP Bank GO has emerged as a formidable player in the fight against financial fraud, with its innovative security measures setting new standards in the digital banking sector. Since its launch in ...Read more

Banking
APRA’s hybrid exit is a A$43bn catalyst: who captures the flow—bank credit or private credit?
Australia’s phase-out of bank hybrids isn’t just a regulatory clean-up—it’s a forced portfolio reallocation the size of a mid-tier super fund. Read more