Sydney, March 5, 2026, 17:09 (AEDT)
- More of NAB’s mortgage customers are tapping offset accounts to reduce what they pay in interest.
- Households remain wary, and markets are still trying to price in potential rate changes as the shift takes hold.
- Banks are keeping a close eye on deposit levels, with the fight for home loan customers still fierce.
National Australia Bank Limited (NAB.AX) reported Wednesday that close to 75% of its home-loan customers are now using offset accounts. The bank also pointed to a 98% jump in the number of offset accounts linked to new mortgages held by borrowers under 35, compared with a year ago. For a $500,000 loan at 5.42% over 30 years, NAB estimates an offset account can shave about $74,000 off the total interest bill. Home lending executive Denton Pugh described these accounts as a way to save “without needing big lifestyle changes.” news.nab.com.au
The rate environment’s getting choppy again, and it’s showing up in consumer behavior. Instead of splurging, Australians appear to be holding onto cash. January’s household spending indicator climbed to A$78.98 billion, but annual growth eased to 4.6%—the slowest since last May, ABS figures via Reuters show. “Consumers tightened their belts at the start of 2026,” Oxford Economics Australia’s Harry McAuley said, with markets now factoring in a possible rate hike by May. Reuters
Reserve Bank of Australia Governor Michele Bullock has flagged that inflation’s path can turn abruptly, citing international shocks as a key factor for keeping monetary policy “live.” “Things can change quickly,” Bullock remarked this week, following the central bank’s move in February to raise the cash rate to 3.85%. Reuters
Offset accounts are a fixture in Australia — here, whatever’s in your linked transaction account gets subtracted from the mortgage principal before the bank works out your interest charges. That means borrowers end up paying interest on a reduced balance. But there’s a catch: offsets typically attract higher loan rates or extra package fees, and they’re mostly bundled with variable-rate loans.
NAB’s latest data points to the east coast as the hot spot for offsets. Uptake reached 77% for both New South Wales and Queensland, and trailed a bit in Victoria at 68%. About half of offset account holders kept balances of up to $20,000, figures reported by realestate.com.au show.
Lenders with books heavy on offsets end up collecting less interest on home loans, since the cash in those linked accounts effectively reduces the mortgage balance for interest calculations. That same pile of cash also counts as sticky deposit funding — a feature banks favor, particularly when wholesale markets turn jittery.
Offset-linked mortgages have been a headline pitch from big rivals like Commonwealth Bank, Westpac, and ANZ for years. The numbers suggest customers aren’t only rate-hunting—they’re seeking flexibility and somewhere to stash extra cash.
But those balances don’t always stay put. When living costs climb, borrowers may tap into offsets to pay the bills, eroding those cushions fast. Should rates drop, the incentive to keep money in offsets fades as the savings shrink. For banks, a rapid change in deposit mix can hammer margins right away.
NAB chief executive Andrew Irvine, speaking at a Singapore forum this week, said Australia is getting plenty of attention from global and Asian investors as capital shifts in a riskier environment. “We are a very attractive destination for global capital,” he said, pointing to robust institutions and deep markets. news.nab.com.au
At this point, NAB’s spike in offset accounts stands out as a subtle signal within a broader trend. Households remain wary. Competition for deposits and home loan customers comes down to the granular level—each transaction account matters.
