Helicopter flights and resort holidays: The 'luxurious life' of alleged NAB fraudster Rosemary Rogers

The former NAB executive staffer accused of corruptly receiving $5.4 million in benefits during a $40 million fraud was allegedly bribed with luxurious holidays and helicopter flights.

Rosemary Rogers, 43, is accused of corruptly receiving a benefit 56 times while working as the chief of staff for former NAB boss Andrew Thorburn.

The now-unemployed mother faced a Sydney court yesterday after flying from her luxurious $3.8 million Melbourne home and handing herself over to detectives.

The court was told Ms Rogers, who spent most of her adult life working for the bank she allegedly defrauded, was motivated by greed as she funded a "very luxurious life" with benefits valued at $5.4 million between 2013 and 2017.

It is alleged her co-accused, Human Group director Helen Rosamond, paid Ms Rogers extravagant bribes to secure her approval for bloated invoices she sent to NAB.

The bribes allegedly included a one-month trip to the US for eight people that cost nearly $500,000, pre-paid credit cards, private helicopter transfers, multiple trips to the Emirates resort at Wolgan Valley and a $46,000 boat.

Detectives say the total amount involved in the alleged fraud is about $40 million.

Ms Rogers was bailed yesterday without a surety after her lawyer argued most of her assets had been frozen by the NSW Crime Commission as part of its investigation.

While magistrate Robert Williams said Ms Rogers would likely be jailed if convicted of all the offences, he said the risk of the woman fleeing could be mitigated with strict bail conditions.

They include that she lives at her Williamstown home and obeys a nightly curfew, reports daily to police and uses only one mobile phone.

She also can't use any encrypted messaging service, such as WhatsApp, or approach international ports of departure except to fly to Sydney for court appearances.

Police said more than 100 witness statements and evidence including phone records, emails and various account statements have been acquired during the investigation.

Ms Rosamond was charged last week with similar offences after allegedly forking out $6.6 million in bribes to maintain a relationship between her training company and NAB.

The bank says it "is the victim in this matter".

"Police have confirmed that no one at NAB is under investigation, including former CEO Andrew Thorburn, and there is no suggestion of any wrongdoing by anyone at NAB," a spokesperson said late last week.

Ms Rogers' case will return to court on March 19.

With AAP.