Treasury has been accused of being "asleep at the wheel" after the Auditor General's office found it took five months to set up proper monitoring processes for the Retail Deposit Guarantee Scheme.
Last year, an Auditor General's review found the scheme had been successful in maintaining confidence in the financial system, although noted that the costs had been considerable.
Speaking about the review this morning, Deputy Auditor-General Philippa Smith told a Parliamentary finance and expenditure committee the scheme was set up in haste and Treasury had "continued too long in that reactive and crisis management mode".
"They didn't move to a more strategic approach to think in broader terms, what they were doing, what were the issues they had to manage. They did eventually but perhaps not as soon as they could have," Ms Smith said.
"As a policy ministry, where was the policy work? Where were the policy expertise to say 'actually we've got something unprecedented here, is there a better way of going about it?'."