He said that lead to a "level of confidence which has stimulated the economy".
"I've got a view that genuine stimulus in the economy is more likely to come from [the likes of] the wage subsidy scheme, than a one-off helicopter-style payment."
He did not directly reference the US stimulus cheque scheme, but that economic plan was also known as "helicopter money".
Robertson said that form of economic stimulus worked in countries where there was a sharp economic downturn, such as the US.
But he told MPs this morning that he was "attracted to a form of stimulus that is enduring and builds confidence".
Treasury secretary Caralee McLiesh was also at the hearing but again refused to speak with media after she was finished in the committee.
That means media were unable to ask further questions on how much discussion actually went into adopting a similar US-style stimulus cheque in New Zealand.
US law makes recently approved a $1.9 trillion relief package which comes in the form on stimulus cheque to most Americans.
This is the third such cheque that has been approved by the Government. They are one-off payments of up to US$1400 ($1950).
To date, more than $14b has been paid through NZ's wage subsidy scheme to more than 750,000 businesses.
That number will no doubt rise, as eligible businesses can claim more money from the scheme because of the most recent Auckland outbreak.