Thousands of National Australia Bank (NAB) customers are waiting for their pay packets after a software error caused electronic transactions to be delayed.
NAB spokeswoman Luisa Ford said the IT problem had been rectified by staff in Melbourne working since last night and some payments had already been processed successfully.
"It's a slower process than normal," she told AAP.
The bank expected all payments to be processed by the end of Wednesday.
The error was an anomaly, Ms Ford said.
Retail and business customers were both affected by the glitch.